From: Hans Verkuil Date: Mon, 19 Jan 2015 09:23:26 +0000 (-0300) Subject: [media] pvrusb2: fix missing device_caps in querycap X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=42639f6de69433cd531c79390fd8eccf311ed44e;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git [media] pvrusb2: fix missing device_caps in querycap The VIDIOC_QUERYCAP function should set device_caps, but this was missing. In addition, it set the version field as well, but that should be done by the core, not by the driver. If a driver doesn't set device_caps the v4l2 core will issue a WARN_ON, so it's important that this is set correctly. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c index 1b158f1167ed..536210b39428 100644 --- a/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c +++ b/drivers/media/usb/pvrusb2/pvrusb2-v4l2.c @@ -89,16 +89,6 @@ static int vbi_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1}; module_param_array(vbi_nr, int, NULL, 0444); MODULE_PARM_DESC(vbi_nr, "Offset for device's vbi dev minor"); -static struct v4l2_capability pvr_capability ={ - .driver = "pvrusb2", - .card = "Hauppauge WinTV pvr-usb2", - .bus_info = "usb", - .version = LINUX_VERSION_CODE, - .capabilities = (V4L2_CAP_VIDEO_CAPTURE | - V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_RADIO | - V4L2_CAP_READWRITE), -}; - static struct v4l2_fmtdesc pvr_fmtdesc [] = { { .index = 0, @@ -160,10 +150,22 @@ static int pvr2_querycap(struct file *file, void *priv, struct v4l2_capability * struct pvr2_v4l2_fh *fh = file->private_data; struct pvr2_hdw *hdw = fh->channel.mc_head->hdw; - memcpy(cap, &pvr_capability, sizeof(struct v4l2_capability)); + strlcpy(cap->driver, "pvrusb2", sizeof(cap->driver)); strlcpy(cap->bus_info, pvr2_hdw_get_bus_info(hdw), sizeof(cap->bus_info)); strlcpy(cap->card, pvr2_hdw_get_desc(hdw), sizeof(cap->card)); + cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_TUNER | + V4L2_CAP_AUDIO | V4L2_CAP_RADIO | + V4L2_CAP_READWRITE | V4L2_CAP_DEVICE_CAPS; + switch (fh->pdi->devbase.vfl_type) { + case VFL_TYPE_GRABBER: + cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_AUDIO; + break; + case VFL_TYPE_RADIO: + cap->device_caps = V4L2_CAP_RADIO; + break; + } + cap->device_caps |= V4L2_CAP_TUNER | V4L2_CAP_READWRITE; return 0; }