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-rw-r--r--drivers/gpu/drm/drm_buffer.c6
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_connector.c6
-rw-r--r--drivers/gpu/drm/radeon/atombios.h2
-rw-r--r--drivers/gpu/drm/radeon/r600.c2
-rw-r--r--drivers/gpu/drm/radeon/radeon_kms.c4
-rw-r--r--drivers/gpu/drm/ttm/ttm_bo_util.c1
-rw-r--r--drivers/gpu/drm/ttm/ttm_page_alloc.c8
-rw-r--r--drivers/gpu/vga/vgaarb.c2
-rw-r--r--drivers/staging/ti-st/st.h1
-rw-r--r--drivers/staging/ti-st/st_core.c9
-rw-r--r--drivers/staging/ti-st/st_core.h2
-rw-r--r--drivers/staging/ti-st/st_kim.c22
-rw-r--r--drivers/usb/core/Kconfig6
-rw-r--r--drivers/usb/core/file.c35
-rw-r--r--drivers/usb/core/message.c1
-rw-r--r--drivers/usb/musb/cppi_dma.c1
-rw-r--r--drivers/usb/musb/musb_gadget.c75
-rw-r--r--drivers/usb/musb/musb_gadget.h2
-rw-r--r--drivers/usb/musb/musb_gadget_ep0.c9
-rw-r--r--drivers/usb/musb/musb_host.c6
20 files changed, 120 insertions, 80 deletions
diff --git a/drivers/gpu/drm/drm_buffer.c b/drivers/gpu/drm/drm_buffer.c
index 55d03ed05000..529a0dbe9fc6 100644
--- a/drivers/gpu/drm/drm_buffer.c
+++ b/drivers/gpu/drm/drm_buffer.c
@@ -98,8 +98,8 @@ EXPORT_SYMBOL(drm_buffer_alloc);
* user_data: A pointer the data that is copied to the buffer.
* size: The Number of bytes to copy.
*/
-extern int drm_buffer_copy_from_user(struct drm_buffer *buf,
- void __user *user_data, int size)
+int drm_buffer_copy_from_user(struct drm_buffer *buf,
+ void __user *user_data, int size)
{
int nr_pages = size / PAGE_SIZE + 1;
int idx;
@@ -163,7 +163,7 @@ void *drm_buffer_read_object(struct drm_buffer *buf,
{
int idx = drm_buffer_index(buf);
int page = drm_buffer_page(buf);
- void *obj = 0;
+ void *obj = NULL;
if (idx + objsize <= PAGE_SIZE) {
obj = &buf->data[page][idx];
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 87186a4bbf03..fc737037f751 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -558,8 +558,10 @@ nouveau_connector_get_modes(struct drm_connector *connector)
if (nv_encoder->dcb->type == OUTPUT_LVDS &&
(nv_encoder->dcb->lvdsconf.use_straps_for_mode ||
dev_priv->vbios.fp_no_ddc) && nouveau_bios_fp_mode(dev, NULL)) {
- nv_connector->native_mode = drm_mode_create(dev);
- nouveau_bios_fp_mode(dev, nv_connector->native_mode);
+ struct drm_display_mode mode;
+
+ nouveau_bios_fp_mode(dev, &mode);
+ nv_connector->native_mode = drm_mode_duplicate(dev, &mode);
}
/* Find the native mode if this is a digital panel, if we didn't
diff --git a/drivers/gpu/drm/radeon/atombios.h b/drivers/gpu/drm/radeon/atombios.h
index 1bc72c3190a9..fe359a239df3 100644
--- a/drivers/gpu/drm/radeon/atombios.h
+++ b/drivers/gpu/drm/radeon/atombios.h
@@ -4999,7 +4999,7 @@ typedef struct _SW_I2C_IO_DATA_PARAMETERS
#define SW_I2C_CNTL_WRITE1BIT 6
//==============================VESA definition Portion===============================
-#define VESA_OEM_PRODUCT_REV '01.00'
+#define VESA_OEM_PRODUCT_REV "01.00"
#define VESA_MODE_ATTRIBUTE_MODE_SUPPORT 0xBB //refer to VBE spec p.32, no TTY support
#define VESA_MODE_WIN_ATTRIBUTE 7
#define VESA_WIN_SIZE 64
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index afc18d87fdca..ddc3adea1dda 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -2729,7 +2729,7 @@ int r600_ib_test(struct radeon_device *rdev)
if (i < rdev->usec_timeout) {
DRM_INFO("ib test succeeded in %u usecs\n", i);
} else {
- DRM_ERROR("radeon: ib test failed (sracth(0x%04X)=0x%08X)\n",
+ DRM_ERROR("radeon: ib test failed (scratch(0x%04X)=0x%08X)\n",
scratch, tmp);
r = -EINVAL;
}
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index 5eee3c41d124..8fbbe1c6ebbd 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -203,6 +203,10 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
*/
int radeon_driver_firstopen_kms(struct drm_device *dev)
{
+ struct radeon_device *rdev = dev->dev_private;
+
+ if (rdev->powered_down)
+ return -EINVAL;
return 0;
}
diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c
index 7cffb3e04232..3451a82adba7 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_util.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
@@ -351,6 +351,7 @@ static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo,
INIT_LIST_HEAD(&fbo->lru);
INIT_LIST_HEAD(&fbo->swap);
fbo->vm_node = NULL;
+ atomic_set(&fbo->cpu_writers, 0);
fbo->sync_obj = driver->sync_obj_ref(bo->sync_obj);
kref_init(&fbo->list_kref);
diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c
index ca904799f018..b1e02fffd3cc 100644
--- a/drivers/gpu/drm/ttm/ttm_page_alloc.c
+++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c
@@ -69,7 +69,7 @@ struct ttm_page_pool {
spinlock_t lock;
bool fill_lock;
struct list_head list;
- int gfp_flags;
+ gfp_t gfp_flags;
unsigned npages;
char *name;
unsigned long nfrees;
@@ -475,7 +475,7 @@ static void ttm_handle_caching_state_failure(struct list_head *pages,
* This function is reentrant if caller updates count depending on number of
* pages returned in pages array.
*/
-static int ttm_alloc_new_pages(struct list_head *pages, int gfp_flags,
+static int ttm_alloc_new_pages(struct list_head *pages, gfp_t gfp_flags,
int ttm_flags, enum ttm_caching_state cstate, unsigned count)
{
struct page **caching_array;
@@ -666,7 +666,7 @@ int ttm_get_pages(struct list_head *pages, int flags,
{
struct ttm_page_pool *pool = ttm_get_pool(flags, cstate);
struct page *p = NULL;
- int gfp_flags = GFP_USER;
+ gfp_t gfp_flags = GFP_USER;
int r;
/* set zero flag for page allocation if required */
@@ -818,7 +818,7 @@ int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages)
return 0;
}
-void ttm_page_alloc_fini()
+void ttm_page_alloc_fini(void)
{
int i;
diff --git a/drivers/gpu/vga/vgaarb.c b/drivers/gpu/vga/vgaarb.c
index b87569e96b16..f366f968155a 100644
--- a/drivers/gpu/vga/vgaarb.c
+++ b/drivers/gpu/vga/vgaarb.c
@@ -598,7 +598,7 @@ static inline void vga_update_device_decodes(struct vga_device *vgadev,
pr_debug("vgaarb: decoding count now is: %d\n", vga_decode_count);
}
-void __vga_set_legacy_decoding(struct pci_dev *pdev, unsigned int decodes, bool userspace)
+static void __vga_set_legacy_decoding(struct pci_dev *pdev, unsigned int decodes, bool userspace)
{
struct vga_device *vgadev;
unsigned long flags;
diff --git a/drivers/staging/ti-st/st.h b/drivers/staging/ti-st/st.h
index 9952579425b9..1b3060eb2921 100644
--- a/drivers/staging/ti-st/st.h
+++ b/drivers/staging/ti-st/st.h
@@ -80,5 +80,4 @@ struct st_proto_s {
extern long st_register(struct st_proto_s *);
extern long st_unregister(enum proto_type);
-extern struct platform_device *st_get_plat_device(void);
#endif /* ST_H */
diff --git a/drivers/staging/ti-st/st_core.c b/drivers/staging/ti-st/st_core.c
index 063c9b1db1ab..b85d8bfdf600 100644
--- a/drivers/staging/ti-st/st_core.c
+++ b/drivers/staging/ti-st/st_core.c
@@ -38,7 +38,6 @@
#include "st_ll.h"
#include "st.h"
-#define VERBOSE
/* strings to be used for rfkill entries and by
* ST Core to be used for sysfs debug entry
*/
@@ -581,7 +580,7 @@ long st_register(struct st_proto_s *new_proto)
long err = 0;
unsigned long flags = 0;
- st_kim_ref(&st_gdata);
+ st_kim_ref(&st_gdata, 0);
pr_info("%s(%d) ", __func__, new_proto->type);
if (st_gdata == NULL || new_proto == NULL || new_proto->recv == NULL
|| new_proto->reg_complete_cb == NULL) {
@@ -713,7 +712,7 @@ long st_unregister(enum proto_type type)
pr_debug("%s: %d ", __func__, type);
- st_kim_ref(&st_gdata);
+ st_kim_ref(&st_gdata, 0);
if (type < ST_BT || type >= ST_MAX) {
pr_err(" protocol %d not supported", type);
return -EPROTONOSUPPORT;
@@ -767,7 +766,7 @@ long st_write(struct sk_buff *skb)
#endif
long len;
- st_kim_ref(&st_gdata);
+ st_kim_ref(&st_gdata, 0);
if (unlikely(skb == NULL || st_gdata == NULL
|| st_gdata->tty == NULL)) {
pr_err("data/tty unavailable to perform write");
@@ -818,7 +817,7 @@ static int st_tty_open(struct tty_struct *tty)
struct st_data_s *st_gdata;
pr_info("%s ", __func__);
- st_kim_ref(&st_gdata);
+ st_kim_ref(&st_gdata, 0);
st_gdata->tty = tty;
tty->disc_data = st_gdata;
diff --git a/drivers/staging/ti-st/st_core.h b/drivers/staging/ti-st/st_core.h
index e0c32d149f5f..8601320a679e 100644
--- a/drivers/staging/ti-st/st_core.h
+++ b/drivers/staging/ti-st/st_core.h
@@ -117,7 +117,7 @@ int st_core_init(struct st_data_s **);
void st_core_exit(struct st_data_s *);
/* ask for reference from KIM */
-void st_kim_ref(struct st_data_s **);
+void st_kim_ref(struct st_data_s **, int);
#define GPS_STUB_TEST
#ifdef GPS_STUB_TEST
diff --git a/drivers/staging/ti-st/st_kim.c b/drivers/staging/ti-st/st_kim.c
index b4a6c7fdc4e6..9e99463f76e8 100644
--- a/drivers/staging/ti-st/st_kim.c
+++ b/drivers/staging/ti-st/st_kim.c
@@ -72,11 +72,26 @@ const unsigned char *protocol_names[] = {
PROTO_ENTRY(ST_GPS, "GPS"),
};
+#define MAX_ST_DEVICES 3 /* Imagine 1 on each UART for now */
+struct platform_device *st_kim_devices[MAX_ST_DEVICES];
/**********************************************************************/
/* internal functions */
/**
+ * st_get_plat_device -
+ * function which returns the reference to the platform device
+ * requested by id. As of now only 1 such device exists (id=0)
+ * the context requesting for reference can get the id to be
+ * requested by a. The protocol driver which is registering or
+ * b. the tty device which is opened.
+ */
+static struct platform_device *st_get_plat_device(int id)
+{
+ return st_kim_devices[id];
+}
+
+/**
* validate_firmware_response -
* function to return whether the firmware response was proper
* in case of error don't complete so that waiting for proper
@@ -353,7 +368,7 @@ void st_kim_chip_toggle(enum proto_type type, enum kim_gpio_state state)
struct kim_data_s *kim_gdata;
pr_info(" %s ", __func__);
- kim_pdev = st_get_plat_device();
+ kim_pdev = st_get_plat_device(0);
kim_gdata = dev_get_drvdata(&kim_pdev->dev);
if (kim_gdata->gpios[type] == -1) {
@@ -574,12 +589,12 @@ static int kim_toggle_radio(void *data, bool blocked)
* This would enable multiple such platform devices to exist
* on a given platform
*/
-void st_kim_ref(struct st_data_s **core_data)
+void st_kim_ref(struct st_data_s **core_data, int id)
{
struct platform_device *pdev;
struct kim_data_s *kim_gdata;
/* get kim_gdata reference from platform device */
- pdev = st_get_plat_device();
+ pdev = st_get_plat_device(id);
kim_gdata = dev_get_drvdata(&pdev->dev);
*core_data = kim_gdata->core_data;
}
@@ -623,6 +638,7 @@ static int kim_probe(struct platform_device *pdev)
long *gpios = pdev->dev.platform_data;
struct kim_data_s *kim_gdata;
+ st_kim_devices[pdev->id] = pdev;
kim_gdata = kzalloc(sizeof(struct kim_data_s), GFP_ATOMIC);
if (!kim_gdata) {
pr_err("no mem to allocate");
diff --git a/drivers/usb/core/Kconfig b/drivers/usb/core/Kconfig
index 7e594449600e..9eed5b52d9de 100644
--- a/drivers/usb/core/Kconfig
+++ b/drivers/usb/core/Kconfig
@@ -91,12 +91,12 @@ config USB_DYNAMIC_MINORS
If you are unsure about this, say N here.
config USB_SUSPEND
- bool "USB runtime power management (suspend/resume and wakeup)"
+ bool "USB runtime power management (autosuspend) and wakeup"
depends on USB && PM_RUNTIME
help
If you say Y here, you can use driver calls or the sysfs
- "power/level" file to suspend or resume individual USB
- peripherals and to enable or disable autosuspend (see
+ "power/control" file to enable or disable autosuspend for
+ individual USB peripherals (see
Documentation/usb/power-management.txt for more details).
Also, USB "remote wakeup" signaling is supported, whereby some
diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c
index f06f5dbc8cdc..1e6ccef2cf0c 100644
--- a/drivers/usb/core/file.c
+++ b/drivers/usb/core/file.c
@@ -159,9 +159,9 @@ void usb_major_cleanup(void)
int usb_register_dev(struct usb_interface *intf,
struct usb_class_driver *class_driver)
{
- int retval = -EINVAL;
+ int retval;
int minor_base = class_driver->minor_base;
- int minor = 0;
+ int minor;
char name[20];
char *temp;
@@ -173,12 +173,17 @@ int usb_register_dev(struct usb_interface *intf,
*/
minor_base = 0;
#endif
- intf->minor = -1;
-
- dbg ("looking for a minor, starting at %d", minor_base);
if (class_driver->fops == NULL)
- goto exit;
+ return -EINVAL;
+ if (intf->minor >= 0)
+ return -EADDRINUSE;
+
+ retval = init_usb_class();
+ if (retval)
+ return retval;
+
+ dev_dbg(&intf->dev, "looking for a minor, starting at %d", minor_base);
down_write(&minor_rwsem);
for (minor = minor_base; minor < MAX_USB_MINORS; ++minor) {
@@ -186,20 +191,12 @@ int usb_register_dev(struct usb_interface *intf,
continue;
usb_minors[minor] = class_driver->fops;
-
- retval = 0;
+ intf->minor = minor;
break;
}
up_write(&minor_rwsem);
-
- if (retval)
- goto exit;
-
- retval = init_usb_class();
- if (retval)
- goto exit;
-
- intf->minor = minor;
+ if (intf->minor < 0)
+ return -EXFULL;
/* create a usb class device for this usb interface */
snprintf(name, sizeof(name), class_driver->name, minor - minor_base);
@@ -213,11 +210,11 @@ int usb_register_dev(struct usb_interface *intf,
"%s", temp);
if (IS_ERR(intf->usb_dev)) {
down_write(&minor_rwsem);
- usb_minors[intf->minor] = NULL;
+ usb_minors[minor] = NULL;
+ intf->minor = -1;
up_write(&minor_rwsem);
retval = PTR_ERR(intf->usb_dev);
}
-exit:
return retval;
}
EXPORT_SYMBOL_GPL(usb_register_dev);
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 844683e50383..9f0ce7de0e36 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -1802,6 +1802,7 @@ free_interfaces:
intf->dev.groups = usb_interface_groups;
intf->dev.dma_mask = dev->dev.dma_mask;
INIT_WORK(&intf->reset_ws, __usb_queue_reset_device);
+ intf->minor = -1;
device_initialize(&intf->dev);
dev_set_name(&intf->dev, "%d-%s:%d.%d",
dev->bus->busnum, dev->devpath,
diff --git a/drivers/usb/musb/cppi_dma.c b/drivers/usb/musb/cppi_dma.c
index 59dc3d351b60..5ab5bb89bae3 100644
--- a/drivers/usb/musb/cppi_dma.c
+++ b/drivers/usb/musb/cppi_dma.c
@@ -322,6 +322,7 @@ cppi_channel_allocate(struct dma_controller *c,
index, transmit ? 'T' : 'R', cppi_ch);
cppi_ch->hw_ep = ep;
cppi_ch->channel.status = MUSB_DMA_STATUS_FREE;
+ cppi_ch->channel.max_len = 0x7fffffff;
DBG(4, "Allocate CPPI%d %cX\n", index, transmit ? 'T' : 'R');
return &cppi_ch->channel;
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index 6fca870e957e..d065e23f123e 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -300,6 +300,11 @@ static void txstate(struct musb *musb, struct musb_request *req)
#ifndef CONFIG_MUSB_PIO_ONLY
if (is_dma_capable() && musb_ep->dma) {
struct dma_controller *c = musb->dma_controller;
+ size_t request_size;
+
+ /* setup DMA, then program endpoint CSR */
+ request_size = min_t(size_t, request->length - request->actual,
+ musb_ep->dma->max_len);
use_dma = (request->dma != DMA_ADDR_INVALID);
@@ -307,11 +312,6 @@ static void txstate(struct musb *musb, struct musb_request *req)
#ifdef CONFIG_USB_INVENTRA_DMA
{
- size_t request_size;
-
- /* setup DMA, then program endpoint CSR */
- request_size = min_t(size_t, request->length,
- musb_ep->dma->max_len);
if (request_size < musb_ep->packet_sz)
musb_ep->dma->desired_mode = 0;
else
@@ -373,8 +373,8 @@ static void txstate(struct musb *musb, struct musb_request *req)
use_dma = use_dma && c->channel_program(
musb_ep->dma, musb_ep->packet_sz,
0,
- request->dma,
- request->length);
+ request->dma + request->actual,
+ request_size);
if (!use_dma) {
c->channel_release(musb_ep->dma);
musb_ep->dma = NULL;
@@ -386,8 +386,8 @@ static void txstate(struct musb *musb, struct musb_request *req)
use_dma = use_dma && c->channel_program(
musb_ep->dma, musb_ep->packet_sz,
request->zero,
- request->dma,
- request->length);
+ request->dma + request->actual,
+ request_size);
#endif
}
#endif
@@ -501,26 +501,14 @@ void musb_g_tx(struct musb *musb, u8 epnum)
request->zero = 0;
}
- /* ... or if not, then complete it. */
- musb_g_giveback(musb_ep, request, 0);
-
- /*
- * Kickstart next transfer if appropriate;
- * the packet that just completed might not
- * be transmitted for hours or days.
- * REVISIT for double buffering...
- * FIXME revisit for stalls too...
- */
- musb_ep_select(mbase, epnum);
- csr = musb_readw(epio, MUSB_TXCSR);
- if (csr & MUSB_TXCSR_FIFONOTEMPTY)
- return;
-
- request = musb_ep->desc ? next_request(musb_ep) : NULL;
- if (!request) {
- DBG(4, "%s idle now\n",
- musb_ep->end_point.name);
- return;
+ if (request->actual == request->length) {
+ musb_g_giveback(musb_ep, request, 0);
+ request = musb_ep->desc ? next_request(musb_ep) : NULL;
+ if (!request) {
+ DBG(4, "%s idle now\n",
+ musb_ep->end_point.name);
+ return;
+ }
}
}
@@ -568,11 +556,19 @@ static void rxstate(struct musb *musb, struct musb_request *req)
{
const u8 epnum = req->epnum;
struct usb_request *request = &req->request;
- struct musb_ep *musb_ep = &musb->endpoints[epnum].ep_out;
+ struct musb_ep *musb_ep;
void __iomem *epio = musb->endpoints[epnum].regs;
unsigned fifo_count = 0;
- u16 len = musb_ep->packet_sz;
+ u16 len;
u16 csr = musb_readw(epio, MUSB_RXCSR);
+ struct musb_hw_ep *hw_ep = &musb->endpoints[epnum];
+
+ if (hw_ep->is_shared_fifo)
+ musb_ep = &hw_ep->ep_in;
+ else
+ musb_ep = &hw_ep->ep_out;
+
+ len = musb_ep->packet_sz;
/* We shouldn't get here while DMA is active, but we do... */
if (dma_channel_status(musb_ep->dma) == MUSB_DMA_STATUS_BUSY) {
@@ -647,8 +643,8 @@ static void rxstate(struct musb *musb, struct musb_request *req)
*/
csr |= MUSB_RXCSR_DMAENAB;
-#ifdef USE_MODE1
csr |= MUSB_RXCSR_AUTOCLEAR;
+#ifdef USE_MODE1
/* csr |= MUSB_RXCSR_DMAMODE; */
/* this special sequence (enabling and then
@@ -663,10 +659,11 @@ static void rxstate(struct musb *musb, struct musb_request *req)
if (request->actual < request->length) {
int transfer_size = 0;
#ifdef USE_MODE1
- transfer_size = min(request->length,
+ transfer_size = min(request->length - request->actual,
channel->max_len);
#else
- transfer_size = len;
+ transfer_size = min(request->length - request->actual,
+ (unsigned)len);
#endif
if (transfer_size <= musb_ep->packet_sz)
musb_ep->dma->desired_mode = 0;
@@ -740,9 +737,15 @@ void musb_g_rx(struct musb *musb, u8 epnum)
u16 csr;
struct usb_request *request;
void __iomem *mbase = musb->mregs;
- struct musb_ep *musb_ep = &musb->endpoints[epnum].ep_out;
+ struct musb_ep *musb_ep;
void __iomem *epio = musb->endpoints[epnum].regs;
struct dma_channel *dma;
+ struct musb_hw_ep *hw_ep = &musb->endpoints[epnum];
+
+ if (hw_ep->is_shared_fifo)
+ musb_ep = &hw_ep->ep_in;
+ else
+ musb_ep = &hw_ep->ep_out;
musb_ep_select(mbase, epnum);
@@ -1081,7 +1084,7 @@ struct free_record {
/*
* Context: controller locked, IRQs blocked.
*/
-static void musb_ep_restart(struct musb *musb, struct musb_request *req)
+void musb_ep_restart(struct musb *musb, struct musb_request *req)
{
DBG(3, "<== %s request %p len %u on hw_ep%d\n",
req->tx ? "TX/IN" : "RX/OUT",
diff --git a/drivers/usb/musb/musb_gadget.h b/drivers/usb/musb/musb_gadget.h
index c8b140325d82..572b1da7f2dc 100644
--- a/drivers/usb/musb/musb_gadget.h
+++ b/drivers/usb/musb/musb_gadget.h
@@ -105,4 +105,6 @@ extern void musb_gadget_cleanup(struct musb *);
extern void musb_g_giveback(struct musb_ep *, struct usb_request *, int);
+extern void musb_ep_restart(struct musb *, struct musb_request *);
+
#endif /* __MUSB_GADGET_H */
diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c
index 59bef8f3a358..6dd03f4c5f49 100644
--- a/drivers/usb/musb/musb_gadget_ep0.c
+++ b/drivers/usb/musb/musb_gadget_ep0.c
@@ -261,6 +261,7 @@ __acquires(musb->lock)
ctrlrequest->wIndex & 0x0f;
struct musb_ep *musb_ep;
struct musb_hw_ep *ep;
+ struct musb_request *request;
void __iomem *regs;
int is_in;
u16 csr;
@@ -302,6 +303,14 @@ __acquires(musb->lock)
musb_writew(regs, MUSB_RXCSR, csr);
}
+ /* Maybe start the first request in the queue */
+ request = to_musb_request(
+ next_request(musb_ep));
+ if (!musb_ep->busy && request) {
+ DBG(3, "restarting the request\n");
+ musb_ep_restart(musb, request);
+ }
+
/* select ep0 again */
musb_ep_select(mbase, 0);
} break;
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 877d20b1dff9..9e65c47cc98b 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -660,6 +660,12 @@ static bool musb_tx_dma_program(struct dma_controller *dma,
qh->segsize = length;
+ /*
+ * Ensure the data reaches to main memory before starting
+ * DMA transfer
+ */
+ wmb();
+
if (!dma->channel_program(channel, pkt_size, mode,
urb->transfer_dma + offset, length)) {
dma->channel_release(channel);
generated by cgit v1.2.3 (git 2.39.0) at 2025-02-01 15:17:17 +0300