diff options
Diffstat (limited to 'drivers/usb/host/ehci-tegra.c')
| -rw-r--r-- | drivers/usb/host/ehci-tegra.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index a6dd7ac7dc42..f8ffc9d76034 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -34,8 +34,6 @@ #define TEGRA_USB_DMA_ALIGN 32 -#define URB_ALIGNED_TEMP_BUFFER 0x80000000 - struct tegra_ehci_context { bool valid; u32 command; @@ -589,13 +587,14 @@ static void free_temp_buffer(struct urb *urb) dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; temp = container_of(urb->transfer_buffer, struct temp_buffer, - data); + data); if (dir == DMA_FROM_DEVICE) memcpy(temp->old_xfer_buffer, temp->data, - urb->transfer_buffer_length); + urb->transfer_buffer_length); urb->transfer_buffer = temp->old_xfer_buffer; kfree(temp->kmalloc_ptr); + urb->transfer_flags &= ~URB_ALIGNED_TEMP_BUFFER; } @@ -606,9 +605,9 @@ static int alloc_temp_buffer(struct urb *urb, gfp_t mem_flags) size_t kmalloc_size; if (urb->num_sgs || urb->sg || - urb->transfer_buffer_length == 0 || - !((uintptr_t)urb->transfer_buffer & (TEGRA_USB_DMA_ALIGN - 1))) - return 0; + urb->transfer_buffer_length == 0 || + !((uintptr_t)urb->transfer_buffer & (TEGRA_USB_DMA_ALIGN - 1))) + return 0; dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; @@ -627,17 +626,16 @@ static int alloc_temp_buffer(struct urb *urb, gfp_t mem_flags) temp->old_xfer_buffer = urb->transfer_buffer; if (dir == DMA_TO_DEVICE) memcpy(temp->data, urb->transfer_buffer, - urb->transfer_buffer_length); + urb->transfer_buffer_length); urb->transfer_buffer = temp->data; - BUILD_BUG_ON(!(URB_ALIGNED_TEMP_BUFFER & URB_DRIVER_PRIVATE)); urb->transfer_flags |= URB_ALIGNED_TEMP_BUFFER; return 0; } static int tegra_ehci_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, - gfp_t mem_flags) + gfp_t mem_flags) { int ret; @@ -648,6 +646,7 @@ static int tegra_ehci_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, ret = usb_hcd_map_urb_for_dma(hcd, urb, mem_flags); if (ret) free_temp_buffer(urb); + return ret; } |