From 7b2cd079ec8dcc65cdca6621245cfa5e30a8ef9f Mon Sep 17 00:00:00 2001 From: =?utf8?q?Erik=20Andr=C3=A9n?= Date: Thu, 20 Nov 2008 14:11:58 -0300 Subject: [PATCH] V4L/DVB (10007): gspca - m5602: Refactor the error handling in the s5k83a MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Signed-off-by: Erik Andrén Signed-off-by: Mauro Carvalho Chehab --- .../media/video/gspca/m5602/m5602_s5k83a.c | 62 +++++++++++-------- 1 file changed, 36 insertions(+), 26 deletions(-) diff --git a/drivers/media/video/gspca/m5602/m5602_s5k83a.c b/drivers/media/video/gspca/m5602/m5602_s5k83a.c index 0f2addd9802b..00f0964e04ce 100644 --- a/drivers/media/video/gspca/m5602/m5602_s5k83a.c +++ b/drivers/media/video/gspca/m5602/m5602_s5k83a.c @@ -89,15 +89,11 @@ int s5k83a_read_sensor(struct sd *sd, const u8 address, goto out; err = m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 0x18 + len); - if (err < 0) - goto out; do { err = m5602_read_bridge(sd, M5602_XB_I2C_STATUS, i2c_data); } while ((*i2c_data & I2C_BUSY) && !err); - if (err < 0) - goto out; for (i = 0; i < len && !len; i++) { err = m5602_read_bridge(sd, M5602_XB_I2C_DATA, &(i2c_data[i])); @@ -245,10 +241,14 @@ int s5k83a_get_brightness(struct gspca_dev *gspca_dev, __s32 *val) struct sd *sd = (struct sd *) gspca_dev; err = s5k83a_read_sensor(sd, S5K83A_BRIGHTNESS, data, 2); + if (err < 0) + goto out; + data[1] = data[1] << 1; *val = data[1]; - return (err < 0) ? err : 0; +out: + return err; } int s5k83a_set_brightness(struct gspca_dev *gspca_dev, __s32 val) @@ -261,13 +261,13 @@ int s5k83a_set_brightness(struct gspca_dev *gspca_dev, __s32 val) data[1] = 0x20; err = s5k83a_write_sensor(sd, 0x14, data, 2); if (err < 0) - return err; + goto out; data[0] = 0x01; data[1] = 0x00; err = s5k83a_write_sensor(sd, 0x0d, data, 2); if (err < 0) - return err; + goto out; /* FIXME: This is not sane, we need to figure out the composition of these registers */ @@ -275,7 +275,8 @@ int s5k83a_set_brightness(struct gspca_dev *gspca_dev, __s32 val) data[1] = val >> 1; /* brightness, high 7 bits */ err = s5k83a_write_sensor(sd, S5K83A_BRIGHTNESS, data, 2); - return (err < 0) ? err : 0; +out: + return err; } int s5k83a_get_whiteness(struct gspca_dev *gspca_dev, __s32 *val) @@ -285,9 +286,13 @@ int s5k83a_get_whiteness(struct gspca_dev *gspca_dev, __s32 *val) struct sd *sd = (struct sd *) gspca_dev; err = s5k83a_read_sensor(sd, S5K83A_WHITENESS, &data, 1); + if (err < 0) + goto out; *val = data; - return (err < 0) ? err : 0; + +out: + return err; } int s5k83a_set_whiteness(struct gspca_dev *gspca_dev, __s32 val) @@ -299,7 +304,7 @@ int s5k83a_set_whiteness(struct gspca_dev *gspca_dev, __s32 val) data[0] = val; err = s5k83a_write_sensor(sd, S5K83A_WHITENESS, data, 1); - return (err < 0) ? err : 0; + return err; } int s5k83a_get_gain(struct gspca_dev *gspca_dev, __s32 *val) @@ -309,6 +314,8 @@ int s5k83a_get_gain(struct gspca_dev *gspca_dev, __s32 *val) struct sd *sd = (struct sd *) gspca_dev; err = s5k83a_read_sensor(sd, S5K83A_GAIN, data, 2); + if (err < 0) + goto out; data[1] = data[1] & 0x3f; if (data[1] > S5K83A_MAXIMUM_GAIN) @@ -316,7 +323,8 @@ int s5k83a_get_gain(struct gspca_dev *gspca_dev, __s32 *val) *val = data[1]; - return (err < 0) ? err : 0; +out: + return err; } int s5k83a_set_gain(struct gspca_dev *gspca_dev, __s32 val) @@ -328,8 +336,7 @@ int s5k83a_set_gain(struct gspca_dev *gspca_dev, __s32 val) data[0] = 0; data[1] = val; err = s5k83a_write_sensor(sd, S5K83A_GAIN, data, 2); - - return (err < 0) ? err : 0; + return err; } int s5k83a_get_vflip(struct gspca_dev *gspca_dev, __s32 *val) @@ -341,12 +348,13 @@ int s5k83a_get_vflip(struct gspca_dev *gspca_dev, __s32 *val) data[0] = 0x05; err = s5k83a_write_sensor(sd, S5K83A_PAGE_MAP, data, 1); if (err < 0) - return err; + goto out; err = s5k83a_read_sensor(sd, S5K83A_FLIP, data, 1); *val = (data[0] | 0x40) ? 1 : 0; - return (err < 0) ? err : 0; +out: + return err; } int s5k83a_set_vflip(struct gspca_dev *gspca_dev, __s32 val) @@ -358,23 +366,24 @@ int s5k83a_set_vflip(struct gspca_dev *gspca_dev, __s32 val) data[0] = 0x05; err = s5k83a_write_sensor(sd, S5K83A_PAGE_MAP, data, 1); if (err < 0) - return err; + goto out; err = s5k83a_read_sensor(sd, S5K83A_FLIP, data, 1); if (err < 0) - return err; + goto out; /* set or zero six bit, seven is hflip */ data[0] = (val) ? (data[0] & 0x80) | 0x40 | S5K83A_FLIP_MASK : (data[0] & 0x80) | S5K83A_FLIP_MASK; err = s5k83a_write_sensor(sd, S5K83A_FLIP, data, 1); if (err < 0) - return err; + goto out; data[0] = (val) ? 0x0b : 0x0a; err = s5k83a_write_sensor(sd, S5K83A_VFLIP_TUNE, data, 1); - return (err < 0) ? err : 0; +out: + return err; } int s5k83a_get_hflip(struct gspca_dev *gspca_dev, __s32 *val) @@ -386,12 +395,13 @@ int s5k83a_get_hflip(struct gspca_dev *gspca_dev, __s32 *val) data[0] = 0x05; err = s5k83a_write_sensor(sd, S5K83A_PAGE_MAP, data, 1); if (err < 0) - return err; + goto out; err = s5k83a_read_sensor(sd, S5K83A_FLIP, data, 1); *val = (data[0] | 0x80) ? 1 : 0; - return (err < 0) ? err : 0; +out: + return err; } int s5k83a_set_hflip(struct gspca_dev *gspca_dev, __s32 val) @@ -403,21 +413,21 @@ int s5k83a_set_hflip(struct gspca_dev *gspca_dev, __s32 val) data[0] = 0x05; err = s5k83a_write_sensor(sd, S5K83A_PAGE_MAP, data, 1); if (err < 0) - return err; + goto out; err = s5k83a_read_sensor(sd, S5K83A_FLIP, data, 1); if (err < 0) - return err; + goto out; /* set or zero seven bit, six is vflip */ data[0] = (val) ? (data[0] & 0x40) | 0x80 | S5K83A_FLIP_MASK : (data[0] & 0x40) | S5K83A_FLIP_MASK; err = s5k83a_write_sensor(sd, S5K83A_FLIP, data, 1); if (err < 0) - return err; + goto out; data[0] = (val) ? 0x0a : 0x0b; err = s5k83a_write_sensor(sd, S5K83A_HFLIP_TUNE, data, 1); - - return (err < 0) ? err : 0; +out: + return err; } -- 2.20.1