Messages in this thread Patch in this message | | | From | "Kim, Milo" <> | Subject | [PATCH] backlight: lp855x: use PAGE_SIZE for the sysfs read operation | Date | Fri, 15 Mar 2013 00:19:17 +0000 |
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The 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 <milo.kim@ti.com> --- drivers/video/backlight/lp855x_bl.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/video/backlight/lp855x_bl.c b/drivers/video/backlight/lp855x_bl.c index 7ae9ae6..d47efe1 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); -- 1.7.9.5
Best Regards, Milo
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