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authorKim, Milo <Milo.Kim@ti.com>2013-04-29 16:17:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-29 18:28:17 -0700
commit6a7aeb1ae8d8b15073f730ad7828c4b53f1402c3 (patch)
treecc309a801f3e53c672971bca4cc6cbc3383cbd9f
parentd1720b57f3b241d83a50802257eb52fb7ec03ddc (diff)
downloadlinux-6a7aeb1ae8d8b15073f730ad7828c4b53f1402c3.tar.bz2
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 <milo.kim@ti.com> Acked-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--drivers/video/backlight/lp855x_bl.c5
1 files changed, 2 insertions, 3 deletions
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);