diff options
author | Sujith Manoharan <c_manoha@qca.qualcomm.com> | 2012-02-22 11:10:09 +0400 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2012-02-27 23:06:33 +0400 |
commit | ea510e4bdd672b72d0350198538e697e471fafd4 (patch) | |
tree | 5d31d18111ac2d8472e340be7a8b5ebba31eb3c4 | |
parent | c91ec465cab4a831671e01d65113330239faee61 (diff) | |
download | linux-ea510e4bdd672b72d0350198538e697e471fafd4.tar.xz |
ath9k: Cleanup MCI init/deinit routines
This patch simplifies the buffer allocation functions
for MCI and removes unneeded memset calls. Also, a couple
of unused variables are removed and a memory leak in DMA
allocation is fixed.
[ 1263.788267] WARNING: at /home/sujith/dev/wireless-testing/lib/dma-debug.c:875 check_unmap+0x173/0x7e0()
[ 1263.788273] ath9k 0000:06:00.0: DMA-API: device driver frees DMA memory with different size
[device address=0x0000000071908000] [map size=512 bytes] [unmap size=256 bytes]
[ 1263.788345] Pid: 774, comm: rmmod Tainted: G W O 3.3.0-rc3-wl #18
[ 1263.788348] Call Trace:
[ 1263.788355] [<ffffffff8105110f>] warn_slowpath_common+0x7f/0xc0
[ 1263.788359] [<ffffffff81051206>] warn_slowpath_fmt+0x46/0x50
[ 1263.788363] [<ffffffff8125a713>] check_unmap+0x173/0x7e0
[ 1263.788368] [<ffffffff8123fc22>] ? prio_tree_left+0x32/0xc0
[ 1263.788373] [<ffffffff8125aded>] debug_dma_free_coherent+0x6d/0x80
[ 1263.788381] [<ffffffffa0701c3c>] ath_mci_cleanup+0x7c/0x110 [ath9k]
[ 1263.788387] [<ffffffffa06f4033>] ath9k_deinit_softc+0x113/0x120 [ath9k]
[ 1263.788392] [<ffffffffa06f55cc>] ath9k_deinit_device+0x5c/0x70 [ath9k]
[ 1263.788397] [<ffffffffa0704934>] ath_pci_remove+0x54/0xa0 [ath9k]
[ 1263.788401] [<ffffffff81267d06>] pci_device_remove+0x46/0x110
[ 1263.788406] [<ffffffff813102bc>] __device_release_driver+0x7c/0xe0
[ 1263.788410] [<ffffffff81310a00>] driver_detach+0xd0/0xe0
[ 1263.788414] [<ffffffff81310118>] bus_remove_driver+0x88/0xe0
[ 1263.788418] [<ffffffff813111c2>] driver_unregister+0x62/0xa0
[ 1263.788421] [<ffffffff812680c4>] pci_unregister_driver+0x44/0xc0
[ 1263.788427] [<ffffffffa0705015>] ath_pci_exit+0x15/0x20 [ath9k]
[ 1263.788432] [<ffffffffa070a92d>] ath9k_exit+0x15/0x31 [ath9k]
[ 1263.788436] [<ffffffff810b971c>] sys_delete_module+0x18c/0x270
[ 1263.788441] [<ffffffff81436edd>] ? retint_swapgs+0x13/0x1b
[ 1263.788446] [<ffffffff812483be>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[ 1263.788450] [<ffffffff814378e9>] system_call_fastpath+0x16/0x1b
[ 1263.788453] ---[ end trace 3ab4d030ffde40d4 ]---
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r-- | drivers/net/wireless/ath/ath9k/ar9003_mci.c | 5 | ||||
-rw-r--r-- | drivers/net/wireless/ath/ath9k/btcoex.h | 1 | ||||
-rw-r--r-- | drivers/net/wireless/ath/ath9k/mci.c | 70 | ||||
-rw-r--r-- | drivers/net/wireless/ath/ath9k/mci.h | 3 |
4 files changed, 23 insertions, 56 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mci.c b/drivers/net/wireless/ath/ath9k/ar9003_mci.c index 8439656a0913..2cd607f9705e 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_mci.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_mci.c @@ -973,7 +973,6 @@ void ar9003_mci_setup(struct ath_hw *ah, u32 gpm_addr, void *gpm_buf, u16 len, u32 sched_addr) { struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci; - void *sched_buf = (void *)((char *) gpm_buf + (sched_addr - gpm_addr)); if (!ATH9K_HW_CAP_MCI) return; @@ -982,7 +981,6 @@ void ar9003_mci_setup(struct ath_hw *ah, u32 gpm_addr, void *gpm_buf, mci->gpm_buf = gpm_buf; mci->gpm_len = len; mci->sched_addr = sched_addr; - mci->sched_buf = sched_buf; ar9003_mci_reset(ah, true, true, true); } @@ -990,14 +988,11 @@ EXPORT_SYMBOL(ar9003_mci_setup); void ar9003_mci_cleanup(struct ath_hw *ah) { - struct ath_common *common = ath9k_hw_common(ah); - if (!ATH9K_HW_CAP_MCI) return; /* Turn off MCI and Jupiter mode. */ REG_WRITE(ah, AR_BTCOEX_CTRL, 0x00); - ath_dbg(common, MCI, "MCI ar9003_mci_cleanup\n"); ar9003_mci_disable_interrupt(ah); } EXPORT_SYMBOL(ar9003_mci_cleanup); diff --git a/drivers/net/wireless/ath/ath9k/btcoex.h b/drivers/net/wireless/ath/ath9k/btcoex.h index 278361c867ca..0cb7ce98394b 100644 --- a/drivers/net/wireless/ath/ath9k/btcoex.h +++ b/drivers/net/wireless/ath/ath9k/btcoex.h @@ -67,7 +67,6 @@ struct ath9k_hw_mci { u32 wlan_cal_done; u32 config; u8 *gpm_buf; - u8 *sched_buf; bool ready; bool update_2g5g; bool is_2g; diff --git a/drivers/net/wireless/ath/ath9k/mci.c b/drivers/net/wireless/ath/ath9k/mci.c index 05c23ea4c633..85a957ab89be 100644 --- a/drivers/net/wireless/ath/ath9k/mci.c +++ b/drivers/net/wireless/ath/ath9k/mci.c @@ -383,84 +383,60 @@ static void ath_mci_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload) } } -static int ath_mci_buf_alloc(struct ath_softc *sc, struct ath_mci_buf *buf) -{ - int error = 0; - - buf->bf_addr = dma_alloc_coherent(sc->dev, buf->bf_len, - &buf->bf_paddr, GFP_KERNEL); - - if (buf->bf_addr == NULL) { - error = -ENOMEM; - goto fail; - } - - return 0; - -fail: - memset(buf, 0, sizeof(*buf)); - return error; -} - -static void ath_mci_buf_free(struct ath_softc *sc, struct ath_mci_buf *buf) -{ - if (buf->bf_addr) { - dma_free_coherent(sc->dev, buf->bf_len, buf->bf_addr, - buf->bf_paddr); - memset(buf, 0, sizeof(*buf)); - } -} - int ath_mci_setup(struct ath_softc *sc) { struct ath_common *common = ath9k_hw_common(sc->sc_ah); struct ath_mci_coex *mci = &sc->mci_coex; - int error = 0; + struct ath_mci_buf *buf = &mci->sched_buf; if (!ATH9K_HW_CAP_MCI) return 0; - mci->sched_buf.bf_len = ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE; + buf->bf_addr = dma_alloc_coherent(sc->dev, + ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE, + &buf->bf_paddr, GFP_KERNEL); - if (ath_mci_buf_alloc(sc, &mci->sched_buf)) { + if (buf->bf_addr == NULL) { ath_dbg(common, FATAL, "MCI buffer alloc failed\n"); - error = -ENOMEM; - goto fail; + return -ENOMEM; } - mci->sched_buf.bf_len = ATH_MCI_SCHED_BUF_SIZE; + memset(buf->bf_addr, MCI_GPM_RSVD_PATTERN, + ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE); - memset(mci->sched_buf.bf_addr, MCI_GPM_RSVD_PATTERN, - mci->sched_buf.bf_len); + mci->sched_buf.bf_len = ATH_MCI_SCHED_BUF_SIZE; mci->gpm_buf.bf_len = ATH_MCI_GPM_BUF_SIZE; - mci->gpm_buf.bf_addr = (u8 *)mci->sched_buf.bf_addr + - mci->sched_buf.bf_len; + mci->gpm_buf.bf_addr = (u8 *)mci->sched_buf.bf_addr + mci->sched_buf.bf_len; mci->gpm_buf.bf_paddr = mci->sched_buf.bf_paddr + mci->sched_buf.bf_len; - /* initialize the buffer */ - memset(mci->gpm_buf.bf_addr, MCI_GPM_RSVD_PATTERN, mci->gpm_buf.bf_len); - ar9003_mci_setup(sc->sc_ah, mci->gpm_buf.bf_paddr, mci->gpm_buf.bf_addr, (mci->gpm_buf.bf_len >> 4), mci->sched_buf.bf_paddr); -fail: - return error; + + ath_dbg(common, MCI, "MCI Initialized\n"); + + return 0; } void ath_mci_cleanup(struct ath_softc *sc) { + struct ath_common *common = ath9k_hw_common(sc->sc_ah); struct ath_hw *ah = sc->sc_ah; struct ath_mci_coex *mci = &sc->mci_coex; + struct ath_mci_buf *buf = &mci->sched_buf; if (!ATH9K_HW_CAP_MCI) return; - /* - * both schedule and gpm buffers will be released - */ - ath_mci_buf_free(sc, &mci->sched_buf); + if (buf->bf_addr) + dma_free_coherent(sc->dev, + ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE, + buf->bf_addr, buf->bf_paddr); + ar9003_mci_cleanup(ah); + + ath_dbg(common, MCI, "MCI De-Initialized\n"); } void ath_mci_intr(struct ath_softc *sc) diff --git a/drivers/net/wireless/ath/ath9k/mci.h b/drivers/net/wireless/ath/ath9k/mci.h index 29e3e51d078f..b805bf24ea4c 100644 --- a/drivers/net/wireless/ath/ath9k/mci.h +++ b/drivers/net/wireless/ath/ath9k/mci.h @@ -113,7 +113,6 @@ struct ath_mci_profile { u8 num_bdr; }; - struct ath_mci_buf { void *bf_addr; /* virtual addr of desc */ dma_addr_t bf_paddr; /* physical addr of buffer */ @@ -121,10 +120,8 @@ struct ath_mci_buf { }; struct ath_mci_coex { - atomic_t mci_cal_flag; struct ath_mci_buf sched_buf; struct ath_mci_buf gpm_buf; - u32 bt_cal_start; }; void ath_mci_flush_profile(struct ath_mci_profile *mci); |