V4L/DVB (10005): m5602: Cleanup the s5k4aa error handling, cull some comments

Signed-off-by: Erik Andrén <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/gspca/m5602/m5602_s5k4aa.c

@@ -108,6 +108,7 @@ int s5k4aa_probe(struct sd *sd)
 		return -ENODEV;
 	else
 		info("Detected a s5k4aa sensor");
+
 sensor_found:
 	sd->gspca_dev.cam.cam_mode = s5k4aa.modes;
 	sd->gspca_dev.cam.nmodes = s5k4aa.nmodes;
@@ -154,7 +155,7 @@ int s5k4aa_read_sensor(struct sd *sd, const u8 address,
 				  "0x%x containing 0x%x ", address, *i2c_data);
 	}
 out:
-	return (err < 0) ? err : 0;
+	return err;
 }
 
 int s5k4aa_write_sensor(struct sd *sd, const u8 address,
@@ -283,7 +284,7 @@ int s5k4aa_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
 	*val |= data;
 	PDEBUG(D_V4L2, "Read exposure %d", *val);
 out:
-	return (err < 0) ? err : 0;
+	return err;
 }
 
 int s5k4aa_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
@@ -303,7 +304,7 @@ int s5k4aa_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
 	data = val & 0xff;
 	err = s5k4aa_write_sensor(sd, S5K4AA_EXPOSURE_LO, &data, 1);
 out:
-	return (err < 0) ? err : 0;
+	return err;
 }
 
 int s5k4aa_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
@@ -321,7 +322,7 @@ int s5k4aa_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
 	PDEBUG(D_V4L2, "Read vertical flip %d", *val);
 
 out:
-	return (err < 0) ? err : 0;
+	return err;
 }
 
 int s5k4aa_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
@@ -359,7 +360,7 @@ int s5k4aa_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
 		err = s5k4aa_write_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
 	}
 out:
-	return (err < 0) ? err : 0;
+	return err;
 }
 
 int s5k4aa_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
@@ -376,7 +377,7 @@ int s5k4aa_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
 	*val = (data & S5K4AA_RM_H_FLIP) >> 6;
 	PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
 out:
-	return (err < 0) ? err : 0;
+	return err;
 }
 
 int s5k4aa_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
@@ -415,7 +416,7 @@ int s5k4aa_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
 		err = s5k4aa_write_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
 	}
 out:
-	return (err < 0) ? err : 0;
+	return err;
 }
 
 int s5k4aa_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
@@ -433,7 +434,7 @@ int s5k4aa_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
 	PDEBUG(D_V4L2, "Read gain %d", *val);
 
 out:
-	return (err < 0) ? err : 0;
+	return err;
 }
 
 int s5k4aa_set_gain(struct gspca_dev *gspca_dev, __s32 val)
@@ -451,7 +452,7 @@ int s5k4aa_set_gain(struct gspca_dev *gspca_dev, __s32 val)
 	err = s5k4aa_write_sensor(sd, S5K4AA_GAIN_2, &data, 1);
 
 out:
-	return (err < 0) ? err : 0;
+	return err;
 }
 
 void s5k4aa_dump_registers(struct sd *sd)

drivers/media/video/gspca/m5602/m5602_s5k4aa.h

@@ -41,11 +41,10 @@
 #define S5K4AA_WINDOW_HEIGHT_LO		0x09
 #define S5K4AA_WINDOW_WIDTH_HI		0x0a
 #define S5K4AA_WINDOW_WIDTH_LO		0x0b
-#define S5K4AA_GLOBAL_GAIN__		0x0f /* Only a guess ATM !!! */
+#define S5K4AA_GLOBAL_GAIN__		0x0f
-#define S5K4AA_H_BLANK_HI__		0x1d /* Only a guess ATM !!! sync lost
+/* sync lost, if too low, reduces frame rate if too high */
-						if too low, reduces frame rate
+#define S5K4AA_H_BLANK_HI__		0x1d
-						if too high */
+#define S5K4AA_H_BLANK_LO__		0x1e
-#define S5K4AA_H_BLANK_LO__		0x1e /* Only a guess ATM !!! */
 #define S5K4AA_EXPOSURE_HI		0x17
 #define S5K4AA_EXPOSURE_LO		0x18
 #define S5K4AA_GAIN_1			0x1f /* (digital?) gain : 5 bits */