[media] gspca: Fix querycap and incorrect return codes

Add V4L2_CAP_DEVICE_CAPS support to querycap and replace -EINVAL by
-ENOTTY whenever an ioctl is not supported.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 10 insertions, 9 deletions

diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 9fe723c6acb..7669f27238c 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -1066,10 +1066,10 @@ static int vidioc_g_register(struct file *file, void *priv,
         struct gspca_dev *gspca_dev = video_drvdata(file);
 
         if (!gspca_dev->sd_desc->get_chip_ident)
-                return -EINVAL;
+                return -ENOTTY;
 
         if (!gspca_dev->sd_desc->get_register)
-                return -EINVAL;
+                return -ENOTTY;
 
         if (mutex_lock_interruptible(&gspca_dev->usb_lock))
                 return -ERESTARTSYS;
@@ -1090,10 +1090,10 @@ static int vidioc_s_register(struct file *file, void *priv,
         struct gspca_dev *gspca_dev = video_drvdata(file);
 
         if (!gspca_dev->sd_desc->get_chip_ident)
-                return -EINVAL;
+                return -ENOTTY;
 
         if (!gspca_dev->sd_desc->set_register)
-                return -EINVAL;
+                return -ENOTTY;
 
         if (mutex_lock_interruptible(&gspca_dev->usb_lock))
                 return -ERESTARTSYS;
@@ -1115,7 +1115,7 @@ static int vidioc_g_chip_ident(struct file *file, void *priv,
         struct gspca_dev *gspca_dev = video_drvdata(file);
 
         if (!gspca_dev->sd_desc->get_chip_ident)
-                return -EINVAL;
+                return -ENOTTY;
 
         if (mutex_lock_interruptible(&gspca_dev->usb_lock))
                 return -ERESTARTSYS;
@@ -1410,9 +1410,10 @@ static int vidioc_querycap(struct file *file, void  *priv,
         }
         usb_make_path(gspca_dev->dev, (char *) cap->bus_info,
                         sizeof(cap->bus_info));
-        cap->capabilities = V4L2_CAP_VIDEO_CAPTURE
+        cap->device_caps = V4L2_CAP_VIDEO_CAPTURE
                           | V4L2_CAP_STREAMING
                           | V4L2_CAP_READWRITE;
+        cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
         ret = 0;
 out:
         mutex_unlock(&gspca_dev->usb_lock);
@@ -1565,7 +1566,7 @@ static int vidioc_querymenu(struct file *file, void *priv,
         struct gspca_dev *gspca_dev = video_drvdata(file);
 
         if (!gspca_dev->sd_desc->querymenu)
-                return -EINVAL;
+                return -ENOTTY;
         return gspca_dev->sd_desc->querymenu(gspca_dev, qmenu);
 }
 
@@ -1774,7 +1775,7 @@ static int vidioc_g_jpegcomp(struct file *file, void *priv,
         int ret;
 
         if (!gspca_dev->sd_desc->get_jcomp)
-                return -EINVAL;
+                return -ENOTTY;
         if (mutex_lock_interruptible(&gspca_dev->usb_lock))
                 return -ERESTARTSYS;
         gspca_dev->usb_err = 0;
@@ -1793,7 +1794,7 @@ static int vidioc_s_jpegcomp(struct file *file, void *priv,
         int ret;
 
         if (!gspca_dev->sd_desc->set_jcomp)
-                return -EINVAL;
+                return -ENOTTY;
         if (mutex_lock_interruptible(&gspca_dev->usb_lock))
                 return -ERESTARTSYS;
         gspca_dev->usb_err = 0;