From 91ad757c2fc35ec79dd2c909dc6dc721b9c257f3 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 16 May 2008 21:14:27 +0100
Subject: sfc: Removed casts to void

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/sfc/efx.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'drivers/net/sfc/efx.c')

diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index 418f2e53a95b..48aae4702bad 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -265,7 +265,7 @@ void efx_process_channel_now(struct efx_channel *channel)
 	napi_disable(&channel->napi_str);
 
 	/* Poll the channel */
-	(void) efx_process_channel(channel, efx->type->evq_size);
+	efx_process_channel(channel, efx->type->evq_size);
 
 	/* Ack the eventq. This may cause an interrupt to be generated
 	 * when they are reenabled */
@@ -1688,7 +1688,7 @@ static int efx_reset(struct efx_nic *efx)
 	if (method == RESET_TYPE_DISABLE) {
 		/* Reinitialise the device anyway so the driver unload sequence
 		 * can talk to the external SRAM */
-		(void) falcon_init_nic(efx);
+		falcon_init_nic(efx);
 		rc = -EIO;
 		goto fail4;
 	}
-- 
cgit v1.2.3


From f7f13b0b9253e21557ad090144a44f20860332f1 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 16 May 2008 21:15:06 +0100
Subject: sfc: Simplified efx_rx_calc_buffer_size() using get_order()

Merged it into its only caller, efx_init_channels().

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/sfc/efx.c | 29 ++++++++---------------------
 1 file changed, 8 insertions(+), 21 deletions(-)

(limited to 'drivers/net/sfc/efx.c')

diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index 48aae4702bad..1a065fcadc50 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -317,26 +317,6 @@ static void efx_remove_eventq(struct efx_channel *channel)
  *
  *************************************************************************/
 
-/* Setup per-NIC RX buffer parameters.
- * Calculate the rx buffer allocation parameters required to support
- * the current MTU, including padding for header alignment and overruns.
- */
-static void efx_calc_rx_buffer_params(struct efx_nic *efx)
-{
-	unsigned int order, len;
-
-	len = (max(EFX_PAGE_IP_ALIGN, NET_IP_ALIGN) +
-	       EFX_MAX_FRAME_LEN(efx->net_dev->mtu) +
-	       efx->type->rx_buffer_padding);
-
-	/* Calculate page-order */
-	for (order = 0; ((1u << order) * PAGE_SIZE) < len; ++order)
-		;
-
-	efx->rx_buffer_len = len;
-	efx->rx_buffer_order = order;
-}
-
 static int efx_probe_channel(struct efx_channel *channel)
 {
 	struct efx_tx_queue *tx_queue;
@@ -387,7 +367,14 @@ static int efx_init_channels(struct efx_nic *efx)
 	struct efx_channel *channel;
 	int rc = 0;
 
-	efx_calc_rx_buffer_params(efx);
+	/* Calculate the rx buffer allocation parameters required to
+	 * support the current MTU, including padding for header
+	 * alignment and overruns.
+	 */
+	efx->rx_buffer_len = (max(EFX_PAGE_IP_ALIGN, NET_IP_ALIGN) +
+			      EFX_MAX_FRAME_LEN(efx->net_dev->mtu) +
+			      efx->type->rx_buffer_padding);
+	efx->rx_buffer_order = get_order(efx->rx_buffer_len);
 
 	/* Initialise the channels */
 	efx_for_each_channel(channel, efx) {
-- 
cgit v1.2.3


From 2c118e0f6b7f3b8021df3c80c80c0545402f38b4 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 16 May 2008 21:15:29 +0100
Subject: sfc: Removed unncesssary UL suffixes on 0 literals

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/sfc/efx.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'drivers/net/sfc/efx.c')

diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index 1a065fcadc50..3494f4cd314e 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -793,7 +793,7 @@ static int efx_init_io(struct efx_nic *efx)
  fail4:
 	release_mem_region(efx->membase_phys, efx->type->mem_map_size);
  fail3:
-	efx->membase_phys = 0UL;
+	efx->membase_phys = 0;
  fail2:
 	pci_disable_device(efx->pci_dev);
  fail1:
@@ -811,7 +811,7 @@ static void efx_fini_io(struct efx_nic *efx)
 
 	if (efx->membase_phys) {
 		pci_release_region(efx->pci_dev, efx->type->mem_bar);
-		efx->membase_phys = 0UL;
+		efx->membase_phys = 0;
 	}
 
 	pci_disable_device(efx->pci_dev);
-- 
cgit v1.2.3


From b3475645ed8b823c063f7560b243026150d7c3f8 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 16 May 2008 21:15:49 +0100
Subject: sfc: Added and removed braces to comply with kernel style

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/sfc/efx.c    | 6 +++---
 drivers/net/sfc/falcon.c | 3 ++-
 drivers/net/sfc/rx.c     | 3 ++-
 drivers/net/sfc/tx.c     | 9 ++++++---
 4 files changed, 13 insertions(+), 8 deletions(-)

(limited to 'drivers/net/sfc/efx.c')

diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index 3494f4cd314e..df19e86ab2e7 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -1060,9 +1060,8 @@ static void efx_flush_all(struct efx_nic *efx)
 	cancel_delayed_work_sync(&efx->monitor_work);
 
 	/* Ensure that all RX slow refills are complete. */
-	efx_for_each_rx_queue(rx_queue, efx) {
+	efx_for_each_rx_queue(rx_queue, efx)
 		cancel_delayed_work_sync(&rx_queue->work);
-	}
 
 	/* Stop scheduled port reconfigurations */
 	cancel_work_sync(&efx->reconfigure_work);
@@ -1088,9 +1087,10 @@ static void efx_stop_all(struct efx_nic *efx)
 	falcon_disable_interrupts(efx);
 	if (efx->legacy_irq)
 		synchronize_irq(efx->legacy_irq);
-	efx_for_each_channel_with_interrupt(channel, efx)
+	efx_for_each_channel_with_interrupt(channel, efx) {
 		if (channel->irq)
 			synchronize_irq(channel->irq);
+	}
 
 	/* Stop all NAPI processing and synchronous rx refills */
 	efx_for_each_channel(channel, efx)
diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c
index c58f8a3443cc..4f96ce4c3532 100644
--- a/drivers/net/sfc/falcon.c
+++ b/drivers/net/sfc/falcon.c
@@ -1636,9 +1636,10 @@ void falcon_fini_interrupt(struct efx_nic *efx)
 	efx_oword_t reg;
 
 	/* Disable MSI/MSI-X interrupts */
-	efx_for_each_channel_with_interrupt(channel, efx)
+	efx_for_each_channel_with_interrupt(channel, efx) {
 		if (channel->irq)
 			free_irq(channel->irq, channel);
+	}
 
 	/* ACK legacy interrupt */
 	if (FALCON_REV(efx) >= FALCON_REV_B0)
diff --git a/drivers/net/sfc/rx.c b/drivers/net/sfc/rx.c
index 670622373ddf..a6413309c577 100644
--- a/drivers/net/sfc/rx.c
+++ b/drivers/net/sfc/rx.c
@@ -400,9 +400,10 @@ static int __efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue,
 		return 0;
 
 	/* Record minimum fill level */
-	if (unlikely(fill_level < rx_queue->min_fill))
+	if (unlikely(fill_level < rx_queue->min_fill)) {
 		if (fill_level)
 			rx_queue->min_fill = fill_level;
+	}
 
 	/* Acquire RX add lock.  If this lock is contended, then a fast
 	 * fill must already be in progress (e.g. in the refill
diff --git a/drivers/net/sfc/tx.c b/drivers/net/sfc/tx.c
index 9b436f5b4888..75eb0fd5fd2b 100644
--- a/drivers/net/sfc/tx.c
+++ b/drivers/net/sfc/tx.c
@@ -639,11 +639,12 @@ static void efx_tsoh_block_free(struct efx_tx_queue *tx_queue,
 	base_dma = tsoh->dma_addr & PAGE_MASK;
 
 	p = &tx_queue->tso_headers_free;
-	while (*p != NULL)
+	while (*p != NULL) {
 		if (((unsigned long)*p & PAGE_MASK) == base_kva)
 			*p = (*p)->next;
 		else
 			p = &(*p)->next;
+	}
 
 	pci_free_consistent(pci_dev, PAGE_SIZE, (void *)base_kva, base_dma);
 }
@@ -939,9 +940,10 @@ static inline int tso_start_new_packet(struct efx_tx_queue *tx_queue,
 
 	/* Allocate a DMA-mapped header buffer. */
 	if (likely(TSOH_SIZE(st->p.header_length) <= TSOH_STD_SIZE)) {
-		if (tx_queue->tso_headers_free == NULL)
+		if (tx_queue->tso_headers_free == NULL) {
 			if (efx_tsoh_block_alloc(tx_queue))
 				return -1;
+		}
 		EFX_BUG_ON_PARANOID(!tx_queue->tso_headers_free);
 		tsoh = tx_queue->tso_headers_free;
 		tx_queue->tso_headers_free = tsoh->next;
@@ -1106,9 +1108,10 @@ static void efx_fini_tso(struct efx_tx_queue *tx_queue)
 {
 	unsigned i;
 
-	if (tx_queue->buffer)
+	if (tx_queue->buffer) {
 		for (i = 0; i <= tx_queue->efx->type->txd_ring_mask; ++i)
 			efx_tsoh_free(tx_queue, &tx_queue->buffer[i]);
+	}
 
 	while (tx_queue->tso_headers_free != NULL)
 		efx_tsoh_block_free(tx_queue, tx_queue->tso_headers_free,
-- 
cgit v1.2.3


From 55668611d0b2a5947cd17f66243be3cebf21400c Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 16 May 2008 21:16:10 +0100
Subject: sfc: Replaced various macros with inline functions

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/sfc/bitfield.h    |  4 ++--
 drivers/net/sfc/efx.c         |  8 ++++----
 drivers/net/sfc/falcon.c      | 46 +++++++++++++++++++++----------------------
 drivers/net/sfc/falcon.h      |  5 ++++-
 drivers/net/sfc/falcon_io.h   | 29 +++++++++++++++++++--------
 drivers/net/sfc/falcon_xmac.c |  6 +++---
 drivers/net/sfc/net_driver.h  | 31 +++++++++++++++++------------
 drivers/net/sfc/rx.c          | 39 ++++++++++++++++++++++--------------
 drivers/net/sfc/selftest.c    |  8 ++++----
 drivers/net/sfc/tx.c          |  2 +-
 drivers/net/sfc/workarounds.h |  2 +-
 11 files changed, 105 insertions(+), 75 deletions(-)

(limited to 'drivers/net/sfc/efx.c')

diff --git a/drivers/net/sfc/bitfield.h b/drivers/net/sfc/bitfield.h
index 2806201644cc..c98a591bd800 100644
--- a/drivers/net/sfc/bitfield.h
+++ b/drivers/net/sfc/bitfield.h
@@ -483,7 +483,7 @@ typedef union efx_oword {
 #endif
 
 #define EFX_SET_OWORD_FIELD_VER(efx, oword, field, value) do { \
-	if (FALCON_REV(efx) >= FALCON_REV_B0) {			   \
+	if (falcon_rev(efx) >= FALCON_REV_B0) {			   \
 		EFX_SET_OWORD_FIELD((oword), field##_B0, (value)); \
 	} else { \
 		EFX_SET_OWORD_FIELD((oword), field##_A1, (value)); \
@@ -491,7 +491,7 @@ typedef union efx_oword {
 } while (0)
 
 #define EFX_QWORD_FIELD_VER(efx, qword, field)	\
-	(FALCON_REV(efx) >= FALCON_REV_B0 ?	\
+	(falcon_rev(efx) >= FALCON_REV_B0 ?	\
 	 EFX_QWORD_FIELD((qword), field##_B0) :	\
 	 EFX_QWORD_FIELD((qword), field##_A1))
 
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index df19e86ab2e7..86d40295a777 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -691,7 +691,7 @@ static void efx_stop_port(struct efx_nic *efx)
 	mutex_unlock(&efx->mac_lock);
 
 	/* Serialise against efx_set_multicast_list() */
-	if (NET_DEV_REGISTERED(efx)) {
+	if (efx_dev_registered(efx)) {
 		netif_tx_lock_bh(efx->net_dev);
 		netif_tx_unlock_bh(efx->net_dev);
 	}
@@ -1030,7 +1030,7 @@ static void efx_start_all(struct efx_nic *efx)
 		return;
 	if ((efx->state != STATE_RUNNING) && (efx->state != STATE_INIT))
 		return;
-	if (NET_DEV_REGISTERED(efx) && !netif_running(efx->net_dev))
+	if (efx_dev_registered(efx) && !netif_running(efx->net_dev))
 		return;
 
 	/* Mark the port as enabled so port reconfigurations can start, then
@@ -1112,7 +1112,7 @@ static void efx_stop_all(struct efx_nic *efx)
 	/* Stop the kernel transmit interface late, so the watchdog
 	 * timer isn't ticking over the flush */
 	efx_stop_queue(efx);
-	if (NET_DEV_REGISTERED(efx)) {
+	if (efx_dev_registered(efx)) {
 		netif_tx_lock_bh(efx->net_dev);
 		netif_tx_unlock_bh(efx->net_dev);
 	}
@@ -1550,7 +1550,7 @@ static void efx_unregister_netdev(struct efx_nic *efx)
 	efx_for_each_tx_queue(tx_queue, efx)
 		efx_release_tx_buffers(tx_queue);
 
-	if (NET_DEV_REGISTERED(efx)) {
+	if (efx_dev_registered(efx)) {
 		strlcpy(efx->name, pci_name(efx->pci_dev), sizeof(efx->name));
 		unregister_netdev(efx->net_dev);
 	}
diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c
index 4f96ce4c3532..e02f1d1728aa 100644
--- a/drivers/net/sfc/falcon.c
+++ b/drivers/net/sfc/falcon.c
@@ -145,7 +145,7 @@ MODULE_PARM_DESC(rx_xon_thresh_bytes, "RX fifo XON threshold");
 #define PCI_EXP_LNKSTA_LNK_WID_LBN	4
 
 #define FALCON_IS_DUAL_FUNC(efx)		\
-	(FALCON_REV(efx) < FALCON_REV_B0)
+	(falcon_rev(efx) < FALCON_REV_B0)
 
 /**************************************************************************
  *
@@ -465,7 +465,7 @@ int falcon_init_tx(struct efx_tx_queue *tx_queue)
 			      TX_DESCQ_TYPE, 0,
 			      TX_NON_IP_DROP_DIS_B0, 1);
 
-	if (FALCON_REV(efx) >= FALCON_REV_B0) {
+	if (falcon_rev(efx) >= FALCON_REV_B0) {
 		int csum = !(efx->net_dev->features & NETIF_F_IP_CSUM);
 		EFX_SET_OWORD_FIELD(tx_desc_ptr, TX_IP_CHKSM_DIS_B0, csum);
 		EFX_SET_OWORD_FIELD(tx_desc_ptr, TX_TCP_CHKSM_DIS_B0, csum);
@@ -474,7 +474,7 @@ int falcon_init_tx(struct efx_tx_queue *tx_queue)
 	falcon_write_table(efx, &tx_desc_ptr, efx->type->txd_ptr_tbl_base,
 			   tx_queue->queue);
 
-	if (FALCON_REV(efx) < FALCON_REV_B0) {
+	if (falcon_rev(efx) < FALCON_REV_B0) {
 		efx_oword_t reg;
 
 		BUG_ON(tx_queue->queue >= 128); /* HW limit */
@@ -635,7 +635,7 @@ int falcon_init_rx(struct efx_rx_queue *rx_queue)
 	efx_oword_t rx_desc_ptr;
 	struct efx_nic *efx = rx_queue->efx;
 	int rc;
-	int is_b0 = FALCON_REV(efx) >= FALCON_REV_B0;
+	int is_b0 = falcon_rev(efx) >= FALCON_REV_B0;
 	int iscsi_digest_en = is_b0;
 
 	EFX_LOG(efx, "RX queue %d ring in special buffers %d-%d\n",
@@ -822,10 +822,10 @@ static inline void falcon_handle_tx_event(struct efx_channel *channel,
 		tx_ev_q_label = EFX_QWORD_FIELD(*event, TX_EV_Q_LABEL);
 		tx_queue = &efx->tx_queue[tx_ev_q_label];
 
-		if (NET_DEV_REGISTERED(efx))
+		if (efx_dev_registered(efx))
 			netif_tx_lock(efx->net_dev);
 		falcon_notify_tx_desc(tx_queue);
-		if (NET_DEV_REGISTERED(efx))
+		if (efx_dev_registered(efx))
 			netif_tx_unlock(efx->net_dev);
 	} else if (EFX_QWORD_FIELD(*event, TX_EV_PKT_ERR) &&
 		   EFX_WORKAROUND_10727(efx)) {
@@ -884,7 +884,7 @@ static void falcon_handle_rx_not_ok(struct efx_rx_queue *rx_queue,
 						   RX_EV_TCP_UDP_CHKSUM_ERR);
 	rx_ev_eth_crc_err = EFX_QWORD_FIELD(*event, RX_EV_ETH_CRC_ERR);
 	rx_ev_frm_trunc = EFX_QWORD_FIELD(*event, RX_EV_FRM_TRUNC);
-	rx_ev_drib_nib = ((FALCON_REV(efx) >= FALCON_REV_B0) ?
+	rx_ev_drib_nib = ((falcon_rev(efx) >= FALCON_REV_B0) ?
 			  0 : EFX_QWORD_FIELD(*event, RX_EV_DRIB_NIB));
 	rx_ev_pause_frm = EFX_QWORD_FIELD(*event, RX_EV_PAUSE_FRM_ERR);
 
@@ -1065,7 +1065,7 @@ static void falcon_handle_global_event(struct efx_channel *channel,
 	    EFX_QWORD_FIELD(*event, XG_PHY_INTR))
 		is_phy_event = 1;
 
-	if ((FALCON_REV(efx) >= FALCON_REV_B0) &&
+	if ((falcon_rev(efx) >= FALCON_REV_B0) &&
 	    EFX_OWORD_FIELD(*event, XG_MNT_INTR_B0))
 		is_phy_event = 1;
 
@@ -1572,7 +1572,7 @@ static void falcon_setup_rss_indir_table(struct efx_nic *efx)
 	unsigned long offset;
 	efx_dword_t dword;
 
-	if (FALCON_REV(efx) < FALCON_REV_B0)
+	if (falcon_rev(efx) < FALCON_REV_B0)
 		return;
 
 	for (offset = RX_RSS_INDIR_TBL_B0;
@@ -1595,7 +1595,7 @@ int falcon_init_interrupt(struct efx_nic *efx)
 
 	if (!EFX_INT_MODE_USE_MSI(efx)) {
 		irq_handler_t handler;
-		if (FALCON_REV(efx) >= FALCON_REV_B0)
+		if (falcon_rev(efx) >= FALCON_REV_B0)
 			handler = falcon_legacy_interrupt_b0;
 		else
 			handler = falcon_legacy_interrupt_a1;
@@ -1642,7 +1642,7 @@ void falcon_fini_interrupt(struct efx_nic *efx)
 	}
 
 	/* ACK legacy interrupt */
-	if (FALCON_REV(efx) >= FALCON_REV_B0)
+	if (falcon_rev(efx) >= FALCON_REV_B0)
 		falcon_read(efx, &reg, INT_ISR0_B0);
 	else
 		falcon_irq_ack_a1(efx);
@@ -1733,7 +1733,7 @@ void falcon_drain_tx_fifo(struct efx_nic *efx)
 	efx_oword_t temp;
 	int count;
 
-	if ((FALCON_REV(efx) < FALCON_REV_B0) ||
+	if ((falcon_rev(efx) < FALCON_REV_B0) ||
 	    (efx->loopback_mode != LOOPBACK_NONE))
 		return;
 
@@ -1786,7 +1786,7 @@ void falcon_deconfigure_mac_wrapper(struct efx_nic *efx)
 {
 	efx_oword_t temp;
 
-	if (FALCON_REV(efx) < FALCON_REV_B0)
+	if (falcon_rev(efx) < FALCON_REV_B0)
 		return;
 
 	/* Isolate the MAC -> RX */
@@ -1824,7 +1824,7 @@ void falcon_reconfigure_mac_wrapper(struct efx_nic *efx)
 			     MAC_SPEED, link_speed);
 	/* On B0, MAC backpressure can be disabled and packets get
 	 * discarded. */
-	if (FALCON_REV(efx) >= FALCON_REV_B0) {
+	if (falcon_rev(efx) >= FALCON_REV_B0) {
 		EFX_SET_OWORD_FIELD(reg, TXFIFO_DRAIN_EN_B0,
 				    !efx->link_up);
 	}
@@ -1842,7 +1842,7 @@ void falcon_reconfigure_mac_wrapper(struct efx_nic *efx)
 	EFX_SET_OWORD_FIELD_VER(efx, reg, RX_XOFF_MAC_EN, tx_fc);
 
 	/* Unisolate the MAC -> RX */
-	if (FALCON_REV(efx) >= FALCON_REV_B0)
+	if (falcon_rev(efx) >= FALCON_REV_B0)
 		EFX_SET_OWORD_FIELD(reg, RX_INGR_EN_B0, 1);
 	falcon_write(efx, &reg, RX_CFG_REG_KER);
 }
@@ -1857,7 +1857,7 @@ int falcon_dma_stats(struct efx_nic *efx, unsigned int done_offset)
 		return 0;
 
 	/* Statistics fetch will fail if the MAC is in TX drain */
-	if (FALCON_REV(efx) >= FALCON_REV_B0) {
+	if (falcon_rev(efx) >= FALCON_REV_B0) {
 		efx_oword_t temp;
 		falcon_read(efx, &temp, MAC0_CTRL_REG_KER);
 		if (EFX_OWORD_FIELD(temp, TXFIFO_DRAIN_EN_B0))
@@ -2114,7 +2114,7 @@ int falcon_probe_port(struct efx_nic *efx)
 	falcon_init_mdio(&efx->mii);
 
 	/* Hardware flow ctrl. FalconA RX FIFO too small for pause generation */
-	if (FALCON_REV(efx) >= FALCON_REV_B0)
+	if (falcon_rev(efx) >= FALCON_REV_B0)
 		efx->flow_control = EFX_FC_RX | EFX_FC_TX;
 	else
 		efx->flow_control = EFX_FC_RX;
@@ -2374,7 +2374,7 @@ static int falcon_probe_nic_variant(struct efx_nic *efx)
 		return -ENODEV;
 	}
 
-	switch (FALCON_REV(efx)) {
+	switch (falcon_rev(efx)) {
 	case FALCON_REV_A0:
 	case 0xff:
 		EFX_ERR(efx, "Falcon rev A0 not supported\n");
@@ -2400,7 +2400,7 @@ static int falcon_probe_nic_variant(struct efx_nic *efx)
 		break;
 
 	default:
-		EFX_ERR(efx, "Unknown Falcon rev %d\n", FALCON_REV(efx));
+		EFX_ERR(efx, "Unknown Falcon rev %d\n", falcon_rev(efx));
 		return -ENODEV;
 	}
 
@@ -2563,7 +2563,7 @@ int falcon_init_nic(struct efx_nic *efx)
 
 	/* Set number of RSS queues for receive path. */
 	falcon_read(efx, &temp, RX_FILTER_CTL_REG);
-	if (FALCON_REV(efx) >= FALCON_REV_B0)
+	if (falcon_rev(efx) >= FALCON_REV_B0)
 		EFX_SET_OWORD_FIELD(temp, NUM_KER, 0);
 	else
 		EFX_SET_OWORD_FIELD(temp, NUM_KER, efx->rss_queues - 1);
@@ -2601,7 +2601,7 @@ int falcon_init_nic(struct efx_nic *efx)
 	/* Prefetch threshold 2 => fetch when descriptor cache half empty */
 	EFX_SET_OWORD_FIELD(temp, TX_PREF_THRESHOLD, 2);
 	/* Squash TX of packets of 16 bytes or less */
-	if (FALCON_REV(efx) >= FALCON_REV_B0 && EFX_WORKAROUND_9141(efx))
+	if (falcon_rev(efx) >= FALCON_REV_B0 && EFX_WORKAROUND_9141(efx))
 		EFX_SET_OWORD_FIELD(temp, TX_FLUSH_MIN_LEN_EN_B0, 1);
 	falcon_write(efx, &temp, TX_CFG2_REG_KER);
 
@@ -2618,7 +2618,7 @@ int falcon_init_nic(struct efx_nic *efx)
 	if (EFX_WORKAROUND_7575(efx))
 		EFX_SET_OWORD_FIELD_VER(efx, temp, RX_USR_BUF_SIZE,
 					(3 * 4096) / 32);
-	if (FALCON_REV(efx) >= FALCON_REV_B0)
+	if (falcon_rev(efx) >= FALCON_REV_B0)
 		EFX_SET_OWORD_FIELD(temp, RX_INGR_EN_B0, 1);
 
 	/* RX FIFO flow control thresholds */
@@ -2634,7 +2634,7 @@ int falcon_init_nic(struct efx_nic *efx)
 	falcon_write(efx, &temp, RX_CFG_REG_KER);
 
 	/* Set destination of both TX and RX Flush events */
-	if (FALCON_REV(efx) >= FALCON_REV_B0) {
+	if (falcon_rev(efx) >= FALCON_REV_B0) {
 		EFX_POPULATE_OWORD_1(temp, FLS_EVQ_ID, 0);
 		falcon_write(efx, &temp, DP_CTRL_REG);
 	}
diff --git a/drivers/net/sfc/falcon.h b/drivers/net/sfc/falcon.h
index 6117403b0c03..492f9bc28840 100644
--- a/drivers/net/sfc/falcon.h
+++ b/drivers/net/sfc/falcon.h
@@ -23,7 +23,10 @@ enum falcon_revision {
 	FALCON_REV_B0 = 2,
 };
 
-#define FALCON_REV(efx) ((efx)->pci_dev->revision)
+static inline int falcon_rev(struct efx_nic *efx)
+{
+	return efx->pci_dev->revision;
+}
 
 extern struct efx_nic_type falcon_a_nic_type;
 extern struct efx_nic_type falcon_b_nic_type;
diff --git a/drivers/net/sfc/falcon_io.h b/drivers/net/sfc/falcon_io.h
index ea08184ddfa9..6670cdfc41ab 100644
--- a/drivers/net/sfc/falcon_io.h
+++ b/drivers/net/sfc/falcon_io.h
@@ -56,14 +56,27 @@
 #define FALCON_USE_QWORD_IO 1
 #endif
 
-#define _falcon_writeq(efx, value, reg) \
-	__raw_writeq((__force u64) (value), (efx)->membase + (reg))
-#define _falcon_writel(efx, value, reg) \
-	__raw_writel((__force u32) (value), (efx)->membase + (reg))
-#define _falcon_readq(efx, reg) \
-	((__force __le64) __raw_readq((efx)->membase + (reg)))
-#define _falcon_readl(efx, reg) \
-	((__force __le32) __raw_readl((efx)->membase + (reg)))
+#ifdef FALCON_USE_QWORD_IO
+static inline void _falcon_writeq(struct efx_nic *efx, __le64 value,
+				  unsigned int reg)
+{
+	__raw_writeq((__force u64)value, efx->membase + reg);
+}
+static inline __le64 _falcon_readq(struct efx_nic *efx, unsigned int reg)
+{
+	return (__force __le64)__raw_readq(efx->membase + reg);
+}
+#endif
+
+static inline void _falcon_writel(struct efx_nic *efx, __le32 value,
+				  unsigned int reg)
+{
+	__raw_writel((__force u32)value, efx->membase + reg);
+}
+static inline __le32 _falcon_readl(struct efx_nic *efx, unsigned int reg)
+{
+	return (__force __le32)__raw_readl(efx->membase + reg);
+}
 
 /* Writes to a normal 16-byte Falcon register, locking as appropriate. */
 static inline void falcon_write(struct efx_nic *efx, efx_oword_t *value,
diff --git a/drivers/net/sfc/falcon_xmac.c b/drivers/net/sfc/falcon_xmac.c
index d2978d4d3bf9..dbdcee4b0f8d 100644
--- a/drivers/net/sfc/falcon_xmac.c
+++ b/drivers/net/sfc/falcon_xmac.c
@@ -221,7 +221,7 @@ static int falcon_xgmii_status(struct efx_nic *efx)
 {
 	efx_dword_t reg;
 
-	if (FALCON_REV(efx) < FALCON_REV_B0)
+	if (falcon_rev(efx) < FALCON_REV_B0)
 		return 1;
 
 	/* The ISR latches, so clear it and re-read */
@@ -241,7 +241,7 @@ static void falcon_mask_status_intr(struct efx_nic *efx, int enable)
 {
 	efx_dword_t reg;
 
-	if ((FALCON_REV(efx) < FALCON_REV_B0) || LOOPBACK_INTERNAL(efx))
+	if ((falcon_rev(efx) < FALCON_REV_B0) || LOOPBACK_INTERNAL(efx))
 		return;
 
 	/* Flush the ISR */
@@ -639,7 +639,7 @@ int falcon_xmac_set_pause(struct efx_nic *efx, enum efx_fc_type flow_control)
 	reset = ((flow_control & EFX_FC_TX) &&
 		 !(efx->flow_control & EFX_FC_TX));
 	if (EFX_WORKAROUND_11482(efx) && reset) {
-		if (FALCON_REV(efx) >= FALCON_REV_B0) {
+		if (falcon_rev(efx) >= FALCON_REV_B0) {
 			/* Recover by resetting the EM block */
 			if (efx->link_up)
 				falcon_drain_tx_fifo(efx);
diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h
index 59f261b4171f..18b21ef23014 100644
--- a/drivers/net/sfc/net_driver.h
+++ b/drivers/net/sfc/net_driver.h
@@ -52,28 +52,19 @@
 #define EFX_WARN_ON_PARANOID(x) do {} while (0)
 #endif
 
-#define NET_DEV_REGISTERED(efx)					\
-	((efx)->net_dev->reg_state == NETREG_REGISTERED)
-
-/* Include net device name in log messages if it has been registered.
- * Use efx->name not efx->net_dev->name so that races with (un)registration
- * are harmless.
- */
-#define NET_DEV_NAME(efx) (NET_DEV_REGISTERED(efx) ? (efx)->name : "")
-
 /* Un-rate-limited logging */
 #define EFX_ERR(efx, fmt, args...) \
-dev_err(&((efx)->pci_dev->dev), "ERR: %s " fmt, NET_DEV_NAME(efx), ##args)
+dev_err(&((efx)->pci_dev->dev), "ERR: %s " fmt, efx_dev_name(efx), ##args)
 
 #define EFX_INFO(efx, fmt, args...) \
-dev_info(&((efx)->pci_dev->dev), "INFO: %s " fmt, NET_DEV_NAME(efx), ##args)
+dev_info(&((efx)->pci_dev->dev), "INFO: %s " fmt, efx_dev_name(efx), ##args)
 
 #ifdef EFX_ENABLE_DEBUG
 #define EFX_LOG(efx, fmt, args...) \
-dev_info(&((efx)->pci_dev->dev), "DBG: %s " fmt, NET_DEV_NAME(efx), ##args)
+dev_info(&((efx)->pci_dev->dev), "DBG: %s " fmt, efx_dev_name(efx), ##args)
 #else
 #define EFX_LOG(efx, fmt, args...) \
-dev_dbg(&((efx)->pci_dev->dev), "DBG: %s " fmt, NET_DEV_NAME(efx), ##args)
+dev_dbg(&((efx)->pci_dev->dev), "DBG: %s " fmt, efx_dev_name(efx), ##args)
 #endif
 
 #define EFX_TRACE(efx, fmt, args...) do {} while (0)
@@ -760,6 +751,20 @@ struct efx_nic {
 	void *loopback_selftest;
 };
 
+static inline int efx_dev_registered(struct efx_nic *efx)
+{
+	return efx->net_dev->reg_state == NETREG_REGISTERED;
+}
+
+/* Net device name, for inclusion in log messages if it has been registered.
+ * Use efx->name not efx->net_dev->name so that races with (un)registration
+ * are harmless.
+ */
+static inline const char *efx_dev_name(struct efx_nic *efx)
+{
+	return efx_dev_registered(efx) ? efx->name : "";
+}
+
 /**
  * struct efx_nic_type - Efx device type definition
  * @mem_bar: Memory BAR number
diff --git a/drivers/net/sfc/rx.c b/drivers/net/sfc/rx.c
index a6413309c577..f15d33225342 100644
--- a/drivers/net/sfc/rx.c
+++ b/drivers/net/sfc/rx.c
@@ -86,14 +86,21 @@ static unsigned int rx_refill_limit = 95;
  */
 #define EFX_RXD_HEAD_ROOM 2
 
-/* Macros for zero-order pages (potentially) containing multiple RX buffers */
-#define RX_DATA_OFFSET(_data)				\
-	(((unsigned long) (_data)) & (PAGE_SIZE-1))
-#define RX_BUF_OFFSET(_rx_buf)				\
-	RX_DATA_OFFSET((_rx_buf)->data)
-
-#define RX_PAGE_SIZE(_efx)				\
-	(PAGE_SIZE * (1u << (_efx)->rx_buffer_order))
+static inline unsigned int efx_page_offset(void *p)
+{
+	return (__force unsigned int)p & (PAGE_SIZE - 1);
+}
+static inline unsigned int efx_rx_buf_offset(struct efx_rx_buffer *buf)
+{
+	/* Offset is always within one page, so we don't need to consider
+	 * the page order.
+	 */
+	return efx_page_offset(buf->data);
+}
+static inline unsigned int efx_rx_buf_size(struct efx_nic *efx)
+{
+	return PAGE_SIZE << efx->rx_buffer_order;
+}
 
 
 /**************************************************************************
@@ -269,7 +276,7 @@ static inline int efx_init_rx_buffer_page(struct efx_rx_queue *rx_queue,
 			return -ENOMEM;
 
 		dma_addr = pci_map_page(efx->pci_dev, rx_buf->page,
-					0, RX_PAGE_SIZE(efx),
+					0, efx_rx_buf_size(efx),
 					PCI_DMA_FROMDEVICE);
 
 		if (unlikely(pci_dma_mapping_error(dma_addr))) {
@@ -284,7 +291,7 @@ static inline int efx_init_rx_buffer_page(struct efx_rx_queue *rx_queue,
 				      EFX_PAGE_IP_ALIGN);
 	}
 
-	offset = RX_DATA_OFFSET(rx_queue->buf_data);
+	offset = efx_page_offset(rx_queue->buf_data);
 	rx_buf->len = bytes;
 	rx_buf->dma_addr = rx_queue->buf_dma_addr + offset;
 	rx_buf->data = rx_queue->buf_data;
@@ -295,7 +302,7 @@ static inline int efx_init_rx_buffer_page(struct efx_rx_queue *rx_queue,
 		rx_queue->buf_data += ((bytes + 0x1ff) & ~0x1ff);
 		offset += ((bytes + 0x1ff) & ~0x1ff);
 
-		space = RX_PAGE_SIZE(efx) - offset;
+		space = efx_rx_buf_size(efx) - offset;
 		if (space >= bytes) {
 			/* Refs dropped on kernel releasing each skb */
 			get_page(rx_queue->buf_page);
@@ -344,7 +351,8 @@ static inline void efx_unmap_rx_buffer(struct efx_nic *efx,
 		EFX_BUG_ON_PARANOID(rx_buf->skb);
 		if (rx_buf->unmap_addr) {
 			pci_unmap_page(efx->pci_dev, rx_buf->unmap_addr,
-				       RX_PAGE_SIZE(efx), PCI_DMA_FROMDEVICE);
+				       efx_rx_buf_size(efx),
+				       PCI_DMA_FROMDEVICE);
 			rx_buf->unmap_addr = 0;
 		}
 	} else if (likely(rx_buf->skb)) {
@@ -553,7 +561,7 @@ static inline void efx_rx_packet_lro(struct efx_channel *channel,
 		struct skb_frag_struct frags;
 
 		frags.page = rx_buf->page;
-		frags.page_offset = RX_BUF_OFFSET(rx_buf);
+		frags.page_offset = efx_rx_buf_offset(rx_buf);
 		frags.size = rx_buf->len;
 
 		lro_receive_frags(lro_mgr, &frags, rx_buf->len,
@@ -598,7 +606,7 @@ static inline struct sk_buff *efx_rx_mk_skb(struct efx_rx_buffer *rx_buf,
 	if (unlikely(rx_buf->len > hdr_len)) {
 		struct skb_frag_struct *frag = skb_shinfo(skb)->frags;
 		frag->page = rx_buf->page;
-		frag->page_offset = RX_BUF_OFFSET(rx_buf) + hdr_len;
+		frag->page_offset = efx_rx_buf_offset(rx_buf) + hdr_len;
 		frag->size = skb->len - hdr_len;
 		skb_shinfo(skb)->nr_frags = 1;
 		skb->data_len = frag->size;
@@ -852,7 +860,8 @@ void efx_fini_rx_queue(struct efx_rx_queue *rx_queue)
 	/* For a page that is part-way through splitting into RX buffers */
 	if (rx_queue->buf_page != NULL) {
 		pci_unmap_page(rx_queue->efx->pci_dev, rx_queue->buf_dma_addr,
-			       RX_PAGE_SIZE(rx_queue->efx), PCI_DMA_FROMDEVICE);
+			       efx_rx_buf_size(rx_queue->efx),
+			       PCI_DMA_FROMDEVICE);
 		__free_pages(rx_queue->buf_page,
 			     rx_queue->efx->rx_buffer_order);
 		rx_queue->buf_page = NULL;
diff --git a/drivers/net/sfc/selftest.c b/drivers/net/sfc/selftest.c
index cbda15946e8f..2fb69d8b3d70 100644
--- a/drivers/net/sfc/selftest.c
+++ b/drivers/net/sfc/selftest.c
@@ -424,10 +424,10 @@ static int efx_tx_loopback(struct efx_tx_queue *tx_queue)
 		 * interrupt handler. */
 		smp_wmb();
 
-		if (NET_DEV_REGISTERED(efx))
+		if (efx_dev_registered(efx))
 			netif_tx_lock_bh(efx->net_dev);
 		rc = efx_xmit(efx, tx_queue, skb);
-		if (NET_DEV_REGISTERED(efx))
+		if (efx_dev_registered(efx))
 			netif_tx_unlock_bh(efx->net_dev);
 
 		if (rc != NETDEV_TX_OK) {
@@ -453,7 +453,7 @@ static int efx_rx_loopback(struct efx_tx_queue *tx_queue,
 	int tx_done = 0, rx_good, rx_bad;
 	int i, rc = 0;
 
-	if (NET_DEV_REGISTERED(efx))
+	if (efx_dev_registered(efx))
 		netif_tx_lock_bh(efx->net_dev);
 
 	/* Count the number of tx completions, and decrement the refcnt. Any
@@ -465,7 +465,7 @@ static int efx_rx_loopback(struct efx_tx_queue *tx_queue,
 		dev_kfree_skb_any(skb);
 	}
 
-	if (NET_DEV_REGISTERED(efx))
+	if (efx_dev_registered(efx))
 		netif_tx_unlock_bh(efx->net_dev);
 
 	/* Check TX completion and received packet counts */
diff --git a/drivers/net/sfc/tx.c b/drivers/net/sfc/tx.c
index 75eb0fd5fd2b..5cdd082ab8f6 100644
--- a/drivers/net/sfc/tx.c
+++ b/drivers/net/sfc/tx.c
@@ -387,7 +387,7 @@ void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index)
 	if (unlikely(tx_queue->stopped)) {
 		fill_level = tx_queue->insert_count - tx_queue->read_count;
 		if (fill_level < EFX_NETDEV_TX_THRESHOLD(tx_queue)) {
-			EFX_BUG_ON_PARANOID(!NET_DEV_REGISTERED(efx));
+			EFX_BUG_ON_PARANOID(!efx_dev_registered(efx));
 
 			/* Do this under netif_tx_lock(), to avoid racing
 			 * with efx_xmit(). */
diff --git a/drivers/net/sfc/workarounds.h b/drivers/net/sfc/workarounds.h
index dca62f190198..35ab19c27f8d 100644
--- a/drivers/net/sfc/workarounds.h
+++ b/drivers/net/sfc/workarounds.h
@@ -16,7 +16,7 @@
  */
 
 #define EFX_WORKAROUND_ALWAYS(efx) 1
-#define EFX_WORKAROUND_FALCON_A(efx) (FALCON_REV(efx) <= FALCON_REV_A1)
+#define EFX_WORKAROUND_FALCON_A(efx) (falcon_rev(efx) <= FALCON_REV_A1)
 
 /* XAUI resets if link not detected */
 #define EFX_WORKAROUND_5147 EFX_WORKAROUND_ALWAYS
-- 
cgit v1.2.3


From 086ea3564a5378a06c7cbfaf9d2727bc58a8c285 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 16 May 2008 21:17:06 +0100
Subject: sfc: Use resource_size_t for PCI bus address

This should make the driver work on 32-bit systems with 64-bit PCI support.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/sfc/efx.c        | 11 ++++++-----
 drivers/net/sfc/net_driver.h |  2 +-
 2 files changed, 7 insertions(+), 6 deletions(-)

(limited to 'drivers/net/sfc/efx.c')

diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index 86d40295a777..f6131e578b44 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -778,15 +778,16 @@ static int efx_init_io(struct efx_nic *efx)
 	efx->membase = ioremap_nocache(efx->membase_phys,
 				       efx->type->mem_map_size);
 	if (!efx->membase) {
-		EFX_ERR(efx, "could not map memory BAR %d at %lx+%x\n",
-			efx->type->mem_bar, efx->membase_phys,
+		EFX_ERR(efx, "could not map memory BAR %d at %llx+%x\n",
+			efx->type->mem_bar,
+			(unsigned long long)efx->membase_phys,
 			efx->type->mem_map_size);
 		rc = -ENOMEM;
 		goto fail4;
 	}
-	EFX_LOG(efx, "memory BAR %u at %lx+%x (virtual %p)\n",
-		efx->type->mem_bar, efx->membase_phys, efx->type->mem_map_size,
-		efx->membase);
+	EFX_LOG(efx, "memory BAR %u at %llx+%x (virtual %p)\n",
+		efx->type->mem_bar, (unsigned long long)efx->membase_phys,
+		efx->type->mem_map_size, efx->membase);
 
 	return 0;
 
diff --git a/drivers/net/sfc/net_driver.h b/drivers/net/sfc/net_driver.h
index 18b21ef23014..a84f9756ca71 100644
--- a/drivers/net/sfc/net_driver.h
+++ b/drivers/net/sfc/net_driver.h
@@ -686,7 +686,7 @@ struct efx_nic {
 	struct workqueue_struct *workqueue;
 	struct work_struct reset_work;
 	struct delayed_work monitor_work;
-	unsigned long membase_phys;
+	resource_size_t membase_phys;
 	void __iomem *membase;
 	spinlock_t biu_lock;
 	enum efx_int_mode interrupt_mode;
-- 
cgit v1.2.3


From 5b9e207ced5bb7af98b3c147171893435f5104ca Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 16 May 2008 21:18:14 +0100
Subject: sfc: Correct and expand some comments

These comments have been revised in response to questions raised by Andrew
Morton in <20080501120858.207b6dd6.akpm@linux-foundation.org>.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/sfc/efx.c | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

(limited to 'drivers/net/sfc/efx.c')

diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index f6131e578b44..11ee0d4407c4 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -199,11 +199,12 @@ static inline int efx_process_channel(struct efx_channel *channel, int rx_quota)
  */
 static inline void efx_channel_processed(struct efx_channel *channel)
 {
-	/* Write to EVQ_RPTR_REG.  If a new event arrived in a race
-	 * with finishing processing, a new interrupt will be raised.
-	 */
+	/* The interrupt handler for this channel may set work_pending
+	 * as soon as we acknowledge the events we've seen.  Make sure
+	 * it's cleared before then. */
 	channel->work_pending = 0;
-	smp_wmb(); /* Ensure channel updated before any new interrupt. */
+	smp_wmb();
+
 	falcon_eventq_read_ack(channel);
 }
 
@@ -427,9 +428,12 @@ static void efx_start_channel(struct efx_channel *channel)
 		netif_napi_add(channel->napi_dev, &channel->napi_str,
 			       efx_poll, napi_weight);
 
+	/* The interrupt handler for this channel may set work_pending
+	 * as soon as we enable it.  Make sure it's cleared before
+	 * then.  Similarly, make sure it sees the enabled flag set. */
 	channel->work_pending = 0;
 	channel->enabled = 1;
-	smp_wmb(); /* ensure channel updated before first interrupt */
+	smp_wmb();
 
 	napi_enable(&channel->napi_str);
 
@@ -1332,13 +1336,17 @@ static int efx_net_stop(struct net_device *net_dev)
 	return 0;
 }
 
-/* Context: process, dev_base_lock held, non-blocking. */
+/* Context: process, dev_base_lock or RTNL held, non-blocking. */
 static struct net_device_stats *efx_net_stats(struct net_device *net_dev)
 {
 	struct efx_nic *efx = net_dev->priv;
 	struct efx_mac_stats *mac_stats = &efx->mac_stats;
 	struct net_device_stats *stats = &net_dev->stats;
 
+	/* Update stats if possible, but do not wait if another thread
+	 * is updating them (or resetting the NIC); slightly stale
+	 * stats are acceptable.
+	 */
 	if (!spin_trylock(&efx->stats_lock))
 		return stats;
 	if (efx->state == STATE_RUNNING) {
-- 
cgit v1.2.3


From d3208b5ebae9e62c32f0cf74dce1d4ddfac3f895 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Fri, 16 May 2008 21:20:00 +0100
Subject: sfc: Remove redundant casts to and from void *

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
 drivers/net/sfc/efx.c      |  2 +-
 drivers/net/sfc/falcon.c   | 18 +++++++++---------
 drivers/net/sfc/rx.c       |  8 ++++----
 drivers/net/sfc/selftest.c |  4 ++--
 drivers/net/sfc/xfp_phy.c  |  2 +-
 5 files changed, 17 insertions(+), 17 deletions(-)

(limited to 'drivers/net/sfc/efx.c')

diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index 11ee0d4407c4..449760642e31 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -1490,7 +1490,7 @@ static void efx_set_multicast_list(struct net_device *net_dev)
 static int efx_netdev_event(struct notifier_block *this,
 			    unsigned long event, void *ptr)
 {
-	struct net_device *net_dev = (struct net_device *)ptr;
+	struct net_device *net_dev = ptr;
 
 	if (net_dev->open == efx_net_open && event == NETDEV_CHANGENAME) {
 		struct efx_nic *efx = net_dev->priv;
diff --git a/drivers/net/sfc/falcon.c b/drivers/net/sfc/falcon.c
index ac14460e3558..d3f749c72d41 100644
--- a/drivers/net/sfc/falcon.c
+++ b/drivers/net/sfc/falcon.c
@@ -1396,7 +1396,7 @@ static inline void falcon_irq_ack_a1(struct efx_nic *efx)
 static irqreturn_t falcon_fatal_interrupt(struct efx_nic *efx)
 {
 	struct falcon_nic_data *nic_data = efx->nic_data;
-	efx_oword_t *int_ker = (efx_oword_t *) efx->irq_status.addr;
+	efx_oword_t *int_ker = efx->irq_status.addr;
 	efx_oword_t fatal_intr;
 	int error, mem_perr;
 	static int n_int_errors;
@@ -1442,8 +1442,8 @@ out:
  */
 static irqreturn_t falcon_legacy_interrupt_b0(int irq, void *dev_id)
 {
-	struct efx_nic *efx = (struct efx_nic *)dev_id;
-	efx_oword_t *int_ker = (efx_oword_t *) efx->irq_status.addr;
+	struct efx_nic *efx = dev_id;
+	efx_oword_t *int_ker = efx->irq_status.addr;
 	struct efx_channel *channel;
 	efx_dword_t reg;
 	u32 queues;
@@ -1480,8 +1480,8 @@ static irqreturn_t falcon_legacy_interrupt_b0(int irq, void *dev_id)
 
 static irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id)
 {
-	struct efx_nic *efx = (struct efx_nic *)dev_id;
-	efx_oword_t *int_ker = (efx_oword_t *) efx->irq_status.addr;
+	struct efx_nic *efx = dev_id;
+	efx_oword_t *int_ker = efx->irq_status.addr;
 	struct efx_channel *channel;
 	int syserr;
 	int queues;
@@ -1533,9 +1533,9 @@ static irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id)
  */
 static irqreturn_t falcon_msi_interrupt(int irq, void *dev_id)
 {
-	struct efx_channel *channel = (struct efx_channel *)dev_id;
+	struct efx_channel *channel = dev_id;
 	struct efx_nic *efx = channel->efx;
-	efx_oword_t *int_ker = (efx_oword_t *) efx->irq_status.addr;
+	efx_oword_t *int_ker = efx->irq_status.addr;
 	int syserr;
 
 	efx->last_irq_cpu = raw_smp_processor_id();
@@ -1932,7 +1932,7 @@ static int falcon_gmii_wait(struct efx_nic *efx)
 static void falcon_mdio_write(struct net_device *net_dev, int phy_id,
 			      int addr, int value)
 {
-	struct efx_nic *efx = (struct efx_nic *)net_dev->priv;
+	struct efx_nic *efx = net_dev->priv;
 	unsigned int phy_id2 = phy_id & FALCON_PHY_ID_ID_MASK;
 	efx_oword_t reg;
 
@@ -2000,7 +2000,7 @@ static void falcon_mdio_write(struct net_device *net_dev, int phy_id,
  * could be read, -1 will be returned. */
 static int falcon_mdio_read(struct net_device *net_dev, int phy_id, int addr)
 {
-	struct efx_nic *efx = (struct efx_nic *)net_dev->priv;
+	struct efx_nic *efx = net_dev->priv;
 	unsigned int phy_addr = phy_id & FALCON_PHY_ID_ID_MASK;
 	efx_oword_t reg;
 	int value = -1;
diff --git a/drivers/net/sfc/rx.c b/drivers/net/sfc/rx.c
index 88f87ef5e15f..601b001437c0 100644
--- a/drivers/net/sfc/rx.c
+++ b/drivers/net/sfc/rx.c
@@ -109,7 +109,7 @@ static inline unsigned int efx_rx_buf_size(struct efx_nic *efx)
 static int efx_lro_get_skb_hdr(struct sk_buff *skb, void **ip_hdr,
 			       void **tcpudp_hdr, u64 *hdr_flags, void *priv)
 {
-	struct efx_channel *channel = (struct efx_channel *)priv;
+	struct efx_channel *channel = priv;
 	struct iphdr *iph;
 	struct tcphdr *th;
 
@@ -134,12 +134,12 @@ static int efx_get_frag_hdr(struct skb_frag_struct *frag, void **mac_hdr,
 			    void **ip_hdr, void **tcpudp_hdr, u64 *hdr_flags,
 			    void *priv)
 {
-	struct efx_channel *channel = (struct efx_channel *)priv;
+	struct efx_channel *channel = priv;
 	struct ethhdr *eh;
 	struct iphdr *iph;
 
 	/* We support EtherII and VLAN encapsulated IPv4 */
-	eh = (struct ethhdr *)(page_address(frag->page) + frag->page_offset);
+	eh = page_address(frag->page) + frag->page_offset;
 	*mac_hdr = eh;
 
 	if (eh->h_proto == htons(ETH_P_IP)) {
@@ -283,7 +283,7 @@ static inline int efx_init_rx_buffer_page(struct efx_rx_queue *rx_queue,
 
 		rx_queue->buf_page = rx_buf->page;
 		rx_queue->buf_dma_addr = dma_addr;
-		rx_queue->buf_data = ((char *) page_address(rx_buf->page) +
+		rx_queue->buf_data = (page_address(rx_buf->page) +
 				      EFX_PAGE_IP_ALIGN);
 	}
 
diff --git a/drivers/net/sfc/selftest.c b/drivers/net/sfc/selftest.c
index 2fb69d8b3d70..c98f350525a7 100644
--- a/drivers/net/sfc/selftest.c
+++ b/drivers/net/sfc/selftest.c
@@ -290,7 +290,7 @@ void efx_loopback_rx_packet(struct efx_nic *efx,
 
 	payload = &state->payload;
 	
-	received = (struct efx_loopback_payload *)(char *) buf_ptr;
+	received = (struct efx_loopback_payload *) buf_ptr;
 	received->ip.saddr = payload->ip.saddr;
 	received->ip.check = payload->ip.check;
 	
@@ -700,7 +700,7 @@ int efx_offline_test(struct efx_nic *efx,
 	 * "flushing" so all inflight packets are dropped */
 	BUG_ON(efx->loopback_selftest);
 	state->flush = 1;
-	efx->loopback_selftest = (void *)state;
+	efx->loopback_selftest = state;
 
 	rc = efx_test_loopbacks(efx, tests, loopback_modes);
 
diff --git a/drivers/net/sfc/xfp_phy.c b/drivers/net/sfc/xfp_phy.c
index 3b9f9ddbc372..cf75fab3e77e 100644
--- a/drivers/net/sfc/xfp_phy.c
+++ b/drivers/net/sfc/xfp_phy.c
@@ -85,7 +85,7 @@ static int xfp_phy_init(struct efx_nic *efx)
 	int rc;
 
 	phy_data = kzalloc(sizeof(struct xfp_phy_data), GFP_KERNEL);
-	efx->phy_data = (void *) phy_data;
+	efx->phy_data = phy_data;
 
 	EFX_INFO(efx, "XFP: PHY ID reg %x (OUI %x model %x revision"
 		 " %x)\n", devid, MDIO_ID_OUI(devid), MDIO_ID_MODEL(devid),
-- 
cgit v1.2.3