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usb: gadget: uvc: remove references to DMA_ADDR_INVALID

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gadget drivers shouldn't touch req->dma at all,
since UDC drivers are the ones required to handle
mapping and unmapping of the request buffer.

Remove references to DMA_ADDR_INVALID so we don't
creat false expectations to gadget driver writers.

Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2013-03-14 10:48:02 +02:00
parent 853f97b5f3
commit 482ef1d2fe
3 changed files with 0 additions and 4 deletions
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2
drivers/usb/gadget/uvc.h
View File

@ -98,8 +98,6 @@ extern unsigned int uvc_gadget_trace_param;
#define DRIVER_VERSION "0.1.0"
#define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 1, 0)
#define DMA_ADDR_INVALID (~(dma_addr_t)0)
#define UVC_NUM_REQUESTS 4
#define UVC_MAX_REQUEST_SIZE 64
#define UVC_MAX_EVENTS 4

1
drivers/usb/gadget/uvc_v4l2.c
View File

@ -41,7 +41,6 @@ uvc_send_response(struct uvc_device *uvc, struct uvc_request_data *data)
req->length = min_t(unsigned int, uvc->event_length, data->length);
req->zero = data->length < uvc->event_length;
req->dma = DMA_ADDR_INVALID;
memcpy(req->buf, data->data, data->length);

1
drivers/usb/gadget/uvc_video.c
View File

@ -245,7 +245,6 @@ uvc_video_alloc_requests(struct uvc_video *video)
video->req[i]->buf = video->req_buffer[i];
video->req[i]->length = 0;
video->req[i]->dma = DMA_ADDR_INVALID;
video->req[i]->complete = uvc_video_complete;
video->req[i]->context = video;