diff options
Diffstat (limited to 'drivers/usb/core/hcd.c')
| -rw-r--r-- | drivers/usb/core/hcd.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 5cca00a6d09d..e935f71d7a34 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -38,7 +38,6 @@ #include <asm/unaligned.h> #include <linux/platform_device.h> #include <linux/workqueue.h> -#include <linux/pm_runtime.h> #include <linux/usb.h> #include <linux/usb/hcd.h> @@ -1263,10 +1262,8 @@ static void hcd_free_coherent(struct usb_bus *bus, dma_addr_t *dma_handle, *dma_handle = 0; } -static void unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) +void unmap_urb_setup_for_dma(struct usb_hcd *hcd, struct urb *urb) { - enum dma_data_direction dir; - if (urb->transfer_flags & URB_SETUP_MAP_SINGLE) dma_unmap_single(hcd->self.controller, urb->setup_dma, @@ -1279,6 +1276,17 @@ static void unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) sizeof(struct usb_ctrlrequest), DMA_TO_DEVICE); + /* Make it safe to call this routine more than once */ + urb->transfer_flags &= ~(URB_SETUP_MAP_SINGLE | URB_SETUP_MAP_LOCAL); +} +EXPORT_SYMBOL_GPL(unmap_urb_setup_for_dma); + +void unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) +{ + enum dma_data_direction dir; + + unmap_urb_setup_for_dma(hcd, urb); + dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; if (urb->transfer_flags & URB_DMA_MAP_SG) dma_unmap_sg(hcd->self.controller, @@ -1303,10 +1311,10 @@ static void unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) dir); /* Make it safe to call this routine more than once */ - urb->transfer_flags &= ~(URB_SETUP_MAP_SINGLE | URB_SETUP_MAP_LOCAL | - URB_DMA_MAP_SG | URB_DMA_MAP_PAGE | + urb->transfer_flags &= ~(URB_DMA_MAP_SG | URB_DMA_MAP_PAGE | URB_DMA_MAP_SINGLE | URB_MAP_LOCAL); } +EXPORT_SYMBOL_GPL(unmap_urb_for_dma); static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) @@ -1321,6 +1329,8 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, */ if (usb_endpoint_xfer_control(&urb->ep->desc)) { + if (hcd->self.uses_pio_for_control) + return ret; if (hcd->self.uses_dma) { urb->setup_dma = dma_map_single( hcd->self.controller, @@ -1945,7 +1955,6 @@ int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg) dev_dbg(&rhdev->dev, "usb %s%s\n", (msg.event & PM_EVENT_AUTO ? "auto-" : ""), "resume"); - clear_bit(HCD_FLAG_WAKEUP_PENDING, &hcd->flags); if (!hcd->driver->bus_resume) return -ENOENT; if (hcd->state == HC_STATE_RUNNING) @@ -1953,6 +1962,7 @@ int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg) hcd->state = HC_STATE_RESUMING; status = hcd->driver->bus_resume(hcd); + clear_bit(HCD_FLAG_WAKEUP_PENDING, &hcd->flags); if (status == 0) { /* TRSMRCY = 10 msec */ msleep(10); |