From: Archit Taneja Date: Wed, 28 Sep 2011 13:49:24 +0000 (-0300) Subject: [media] OMAP_VOUT: Fix check in reqbuf for buf_size allocation X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=d06db7ec908869cbf79829b8cbd9a04a7c802905;p=openwrt%2Fstaging%2Fblogic.git [media] OMAP_VOUT: Fix check in reqbuf for buf_size allocation The commit 383e4f69879d11c86ebdd38b3356f6d0690fb4cc makes reqbuf prevent requesting a larger size buffer than what is allocated at kernel boot during omap_vout_probe. In omap_vout_buffer_setup callback API, the requested size is compared with vout->buffer_size, this isn't correct as vout->buffer_size is later set to the size requested in reqbuf. When the video device is opened the next time, this check will prevent us to allocate a buffer which is larger than what we requested the last time. Don't use vout->buffer_size, always check with the parameters video1_bufsize or video2_bufsize. Signed-off-by: Archit Taneja Acked-by: Vaibhav Hiremath Signed-off-by: Vaibhav Hiremath Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/video/omap/omap_vout.c b/drivers/media/video/omap/omap_vout.c index 9c5c19f142de..11f5638dad78 100644 --- a/drivers/media/video/omap/omap_vout.c +++ b/drivers/media/video/omap/omap_vout.c @@ -663,10 +663,14 @@ static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count, u32 phy_addr = 0, virt_addr = 0; struct omap_vout_device *vout = q->priv_data; struct omapvideo_info *ovid = &vout->vid_info; + int vid_max_buf_size; if (!vout) return -EINVAL; + vid_max_buf_size = vout->vid == OMAP_VIDEO1 ? video1_bufsize : + video2_bufsize; + if (V4L2_BUF_TYPE_VIDEO_OUTPUT != q->type) return -EINVAL; @@ -689,7 +693,7 @@ static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count, video1_numbuffers : video2_numbuffers; /* Check the size of the buffer */ - if (*size > vout->buffer_size) { + if (*size > vid_max_buf_size) { v4l2_err(&vout->vid_dev->v4l2_dev, "buffer allocation mismatch [%u] [%u]\n", *size, vout->buffer_size);