From: Kim, Milo Date: Tue, 26 Mar 2013 23:25:02 +0000 (+1100) Subject: drivers/video/backlight/lp855x_bl.c: use PAGE_SIZE for the sysfs read operation X-Git-Tag: next-20130404~3^2~306 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=09220237ec4ad3abe0129dc0399295a957369e5f;p=karo-tx-linux.git drivers/video/backlight/lp855x_bl.c: use PAGE_SIZE for the sysfs read operation sysfs allocates PAGE_SIZE. It is used by each R/W operation method. Use it instead of another buffer size. Signed-off-by: Milo(Woogyom) Kim Acked-by: Jingoo Han Signed-off-by: Andrew Morton --- diff --git a/drivers/video/backlight/lp855x_bl.c b/drivers/video/backlight/lp855x_bl.c index 20111ef2f898..c98bdbfdc697 100644 --- a/drivers/video/backlight/lp855x_bl.c +++ b/drivers/video/backlight/lp855x_bl.c @@ -35,7 +35,6 @@ #define LP8557_EPROM_START 0x10 #define LP8557_EPROM_END 0x1E -#define BUF_SIZE 20 #define DEFAULT_BL_NAME "lcd-backlight" #define MAX_BRIGHTNESS 255 @@ -304,7 +303,7 @@ static ssize_t lp855x_get_chip_id(struct device *dev, struct device_attribute *attr, char *buf) { struct lp855x *lp = dev_get_drvdata(dev); - return scnprintf(buf, BUF_SIZE, "%s\n", lp->chipname); + return scnprintf(buf, PAGE_SIZE, "%s\n", lp->chipname); } static ssize_t lp855x_get_bl_ctl_mode(struct device *dev, @@ -319,7 +318,7 @@ static ssize_t lp855x_get_bl_ctl_mode(struct device *dev, else if (mode == REGISTER_BASED) strmode = "register based"; - return scnprintf(buf, BUF_SIZE, "%s\n", strmode); + return scnprintf(buf, PAGE_SIZE, "%s\n", strmode); } static DEVICE_ATTR(chip_id, S_IRUGO, lp855x_get_chip_id, NULL);