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drivers/video/backlight/lp855x_bl.c: use PAGE_SIZE for the sysfs read operation

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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>
This commit is contained in:
Kim, Milo 2013-04-29 16:17:52 -07:00 committed by Linus Torvalds
parent d1720b57f3
commit 6a7aeb1ae8
1 changed files with 2 additions and 3 deletions
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5
drivers/video/backlight/lp855x_bl.c
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@ -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);