[media] media: pci: remove duplicate checks for EPERM

This patch removes check for EPERM in dbg_g/s_register and
vidioc_g/s_register as this check is already performed by core.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/pci/bt8xx/bttv-driver.c

@@ -1936,9 +1936,6 @@ static int bttv_g_register(struct file *file, void *f,
 	struct bttv_fh *fh = f;
 	struct bttv *btv = fh->btv;
 
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
 	if (!v4l2_chip_match_host(&reg->match)) {
 		/* TODO: subdev errors should not be ignored, this should become a
 		   subdev helper function. */
@@ -1960,9 +1957,6 @@ static int bttv_s_register(struct file *file, void *f,
 	struct bttv_fh *fh = f;
 	struct bttv *btv = fh->btv;
 
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
 	if (!v4l2_chip_match_host(&reg->match)) {
 		/* TODO: subdev errors should not be ignored, this should become a
 		   subdev helper function. */

drivers/media/pci/cx18/cx18-av-core.c

@@ -1258,8 +1258,6 @@ static int cx18_av_g_register(struct v4l2_subdev *sd,
 		return -EINVAL;
 	if ((reg->reg & 0x3) != 0)
 		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	reg->size = 4;
 	reg->val = cx18_av_read4(cx, reg->reg & 0x00000ffc);
 	return 0;
@@ -1274,8 +1272,6 @@ static int cx18_av_s_register(struct v4l2_subdev *sd,
 		return -EINVAL;
 	if ((reg->reg & 0x3) != 0)
 		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	cx18_av_write4(cx, reg->reg & 0x00000ffc, reg->val);
 	return 0;
 }

drivers/media/pci/cx23885/cx23885-ioctl.c

@@ -138,9 +138,6 @@ int cx23885_g_register(struct file *file, void *fh,
 {
 	struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev;
 
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
 	if (reg->match.type == V4L2_CHIP_MATCH_HOST) {
 		switch (reg->match.addr) {
 		case 0:
@@ -186,9 +183,6 @@ int cx23885_s_register(struct file *file, void *fh,
 {
 	struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev;
 
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
 	if (reg->match.type == V4L2_CHIP_MATCH_HOST) {
 		switch (reg->match.addr) {
 		case 0:

drivers/media/pci/cx23885/cx23888-ir.c

@@ -1116,8 +1116,6 @@ static int cx23888_ir_g_register(struct v4l2_subdev *sd,
 		return -EINVAL;
 	if (addr < CX23888_IR_CNTRL_REG || addr > CX23888_IR_LEARN_REG)
 		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	reg->size = 4;
 	reg->val = cx23888_ir_read4(state->dev, addr);
 	return 0;
@@ -1135,8 +1133,6 @@ static int cx23888_ir_s_register(struct v4l2_subdev *sd,
 		return -EINVAL;
 	if (addr < CX23888_IR_CNTRL_REG || addr > CX23888_IR_LEARN_REG)
 		return -EINVAL;
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	cx23888_ir_write4(state->dev, addr, reg->val);
 	return 0;
 }

drivers/media/pci/ivtv/ivtv-ioctl.c

@@ -715,8 +715,6 @@ static int ivtv_itvc(struct ivtv *itv, bool get, u64 reg, u64 *val)
 {
 	volatile u8 __iomem *reg_start;
 
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	if (reg >= IVTV_REG_OFFSET && reg < IVTV_REG_OFFSET + IVTV_REG_SIZE)
 		reg_start = itv->reg_mem - IVTV_REG_OFFSET;
 	else if (itv->has_cx23415 && reg >= IVTV_DECODER_OFFSET &&

drivers/media/pci/saa7146/mxb.c

@@ -669,8 +669,6 @@ static int vidioc_g_register(struct file *file, void *fh, struct v4l2_dbg_regist
 {
 	struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
 
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	if (v4l2_chip_match_host(&reg->match)) {
 		reg->val = saa7146_read(dev, reg->reg);
 		reg->size = 4;
@@ -684,8 +682,6 @@ static int vidioc_s_register(struct file *file, void *fh, const struct v4l2_dbg_
 {
 	struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
 
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
 	if (v4l2_chip_match_host(&reg->match)) {
 		saa7146_write(dev, reg->reg, reg->val);
 		return 0;

drivers/media/pci/saa7164/saa7164-encoder.c

@@ -1306,9 +1306,6 @@ static int saa7164_g_register(struct file *file, void *fh,
 	struct saa7164_dev *dev = port->dev;
 	dprintk(DBGLVL_ENC, "%s()\n", __func__);
 
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
 	return 0;
 }
 
@@ -1319,9 +1316,6 @@ static int saa7164_s_register(struct file *file, void *fh,
 	struct saa7164_dev *dev = port->dev;
 	dprintk(DBGLVL_ENC, "%s()\n", __func__);
 
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
 	return 0;
 }
 #endif