[media] v4l2: remove obsolete v4l2_chip_match_host()

This function is no longer needed since it is now the responsibility of the
v4l2 core to check if the DBG_G/S_REGISTER and DBG_G_CHIP_INFO ioctls are
called for the bridge driver or not.

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

3 files changed, 0 insertions, 16 deletions

diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c
index 7ad872a3e31a..f0a0b7f2da92 100644
--- a/drivers/media/usb/usbvision/usbvision-video.c
+++ b/drivers/media/usb/usbvision/usbvision-video.c
@@ -467,8 +467,6 @@ static int vidioc_g_register(struct file *file, void *priv,
         struct usb_usbvision *usbvision = video_drvdata(file);
         int err_code;
 
-        if (!v4l2_chip_match_host(&reg->match))
-                return -EINVAL;
         /* NT100x has a 8-bit register space */
         err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
         if (err_code < 0) {
@@ -488,8 +486,6 @@ static int vidioc_s_register(struct file *file, void *priv,
         struct usb_usbvision *usbvision = video_drvdata(file);
         int err_code;
 
-        if (!v4l2_chip_match_host(&reg->match))
-                return -EINVAL;
         /* NT100x has a 8-bit register space */
         err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
         if (err_code < 0) {
diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
index 3fed63f4e026..5fd76609e613 100644
--- a/drivers/media/v4l2-core/v4l2-common.c
+++ b/drivers/media/v4l2-core/v4l2-common.c
@@ -227,17 +227,6 @@ u32 v4l2_ctrl_next(const u32 * const * ctrl_classes, u32 id)
 }
 EXPORT_SYMBOL(v4l2_ctrl_next);
 
-int v4l2_chip_match_host(const struct v4l2_dbg_match *match)
-{
-        switch (match->type) {
-        case V4L2_CHIP_MATCH_BRIDGE:
-                return match->addr == 0;
-        default:
-                return 0;
-        }
-}
-EXPORT_SYMBOL(v4l2_chip_match_host);
-
 #if IS_ENABLED(CONFIG_I2C)
 int v4l2_chip_match_i2c_client(struct i2c_client *c, const struct v4l2_dbg_match *match)
 {
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h
index 1d93c48cb371..e7821fb3cd86 100644
--- a/include/media/v4l2-common.h
+++ b/include/media/v4l2-common.h
@@ -106,7 +106,6 @@ struct i2c_client; /* forward reference */
 int v4l2_chip_match_i2c_client(struct i2c_client *c, const struct v4l2_dbg_match *match);
 int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_dbg_chip_ident *chip,
                 u32 ident, u32 revision);
-int v4l2_chip_match_host(const struct v4l2_dbg_match *match);
 
 /* ------------------------------------------------------------------------- */