The patch titled Subject: backlight: s6e63m0: remove unnecessary NULL deference check has been added to the -mm tree. Its filename is backlight-s6e63m0-remove-unnecessary-null-deference-check.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Jingoo Han <jg1.han@xxxxxxxxxxx> Subject: backlight: s6e63m0: remove unnecessary NULL deference check Remove unnecessary NULL deference check, because it was already checked in s6e63m0_probe(). Also, POWER_IS_ON is replaced with s6e63m0_power_is_on(). Signed-off-by: Jingoo Han <jg1.han@xxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/video/backlight/s6e63m0.c | 41 +++++++++------------------- 1 file changed, 14 insertions(+), 27 deletions(-) diff -puN drivers/video/backlight/s6e63m0.c~backlight-s6e63m0-remove-unnecessary-null-deference-check drivers/video/backlight/s6e63m0.c --- a/drivers/video/backlight/s6e63m0.c~backlight-s6e63m0-remove-unnecessary-null-deference-check +++ a/drivers/video/backlight/s6e63m0.c @@ -43,8 +43,6 @@ #define MIN_BRIGHTNESS 0 #define MAX_BRIGHTNESS 10 -#define POWER_IS_ON(pwr) ((pwr) <= FB_BLANK_NORMAL) - struct s6e63m0 { struct device *dev; struct spi_device *spi; @@ -501,23 +499,19 @@ static int s6e63m0_ldi_disable(struct s6 return ret; } +static int s6e63m0_power_is_on(int power) +{ + return power <= FB_BLANK_NORMAL; +} + static int s6e63m0_power_on(struct s6e63m0 *lcd) { int ret = 0; - struct lcd_platform_data *pd = NULL; - struct backlight_device *bd = NULL; + struct lcd_platform_data *pd; + struct backlight_device *bd; pd = lcd->lcd_pd; - if (!pd) { - dev_err(lcd->dev, "platform data is NULL.\n"); - return -EFAULT; - } - bd = lcd->bd; - if (!bd) { - dev_err(lcd->dev, "backlight device is NULL.\n"); - return -EFAULT; - } if (!pd->power_on) { dev_err(lcd->dev, "power_on is NULL.\n"); @@ -559,14 +553,10 @@ static int s6e63m0_power_on(struct s6e63 static int s6e63m0_power_off(struct s6e63m0 *lcd) { - int ret = 0; - struct lcd_platform_data *pd = NULL; + int ret; + struct lcd_platform_data *pd; pd = lcd->lcd_pd; - if (!pd) { - dev_err(lcd->dev, "platform data is NULL.\n"); - return -EFAULT; - } ret = s6e63m0_ldi_disable(lcd); if (ret) { @@ -576,11 +566,7 @@ static int s6e63m0_power_off(struct s6e6 msleep(pd->power_off_delay); - if (!pd->power_on) { - dev_err(lcd->dev, "power_on is NULL.\n"); - return -EFAULT; - } else - pd->power_on(lcd->ld, 0); + pd->power_on(lcd->ld, 0); return 0; } @@ -589,9 +575,9 @@ static int s6e63m0_power(struct s6e63m0 { int ret = 0; - if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power)) + if (s6e63m0_power_is_on(power) && !s6e63m0_power_is_on(lcd->power)) ret = s6e63m0_power_on(lcd); - else if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power)) + else if (!s6e63m0_power_is_on(power) && s6e63m0_power_is_on(lcd->power)) ret = s6e63m0_power_off(lcd); if (!ret) @@ -812,8 +798,9 @@ static int s6e63m0_probe(struct spi_devi lcd->power = FB_BLANK_POWERDOWN; s6e63m0_power(lcd, FB_BLANK_UNBLANK); - } else + } else { lcd->power = FB_BLANK_UNBLANK; + } dev_set_drvdata(&spi->dev, lcd); _ Patches currently in -mm which might be from jg1.han@xxxxxxxxxxx are origin.patch backlight-add-lms501kf03-lcd-driver.patch backlight-add-lms501kf03-lcd-driver-fix.patch backlight-ld9040-use-sleep-instead-of-delay.patch backlight-ld9040-remove-unnecessary-null-deference-check.patch backlight-ld9040-replace-efault-with-einval.patch backlight-ld9040-remove-redundant-return-variables.patch backlight-ld9040-reorder-inclusions-of-linux-xxxh.patch backlight-s6e63m0-use-lowercase-names-of-structs.patch backlight-s6e63m0-use-sleep-instead-of-delay.patch backlight-s6e63m0-remove-unnecessary-null-deference-check.patch backlight-s6e63m0-replace-efault-with-einval.patch backlight-s6e63m0-remove-redundant-variable-before_power.patch backlight-s6e63m0-reorder-inclusions-of-linux-xxxh.patch backlight-ams369fg06-use-sleep-instead-of-delay.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html