fbdev: panel-tpo-td043mtea1: Convert sprintf() to sysfs_emit()

Per filesystems/sysfs.rst, show() should only use sysfs_emit()
or sysfs_emit_at() when formatting the value to be returned to user space.

coccinelle complains that there are still a couple of functions that use
snprintf(). Convert them to sysfs_emit().

CC: Helge Deller <[email protected]>
CC: [email protected]
CC: [email protected]
CC: [email protected]
Signed-off-by: Li Zhijian <[email protected]>
Signed-off-by: Helge Deller <[email protected]>

diff --git a/drivers/video/fbdev/omap2/omapfb/displays/panel-tpo-td043mtea1.c b/drivers/video/fbdev/omap2/omapfb/displays/panel-tpo-td043mtea1.c
index 477789cff8e08d5e620a0754feb1f1dba6008370..d487941853e64704ccc68a632bb2df19998c7461 100644 (file)
--- a/drivers/video/fbdev/omap2/omapfb/displays/panel-tpo-td043mtea1.c
+++ b/drivers/video/fbdev/omap2/omapfb/displays/panel-tpo-td043mtea1.c
@@ -225,17 +225,12 @@ static ssize_t tpo_td043_gamma_show(struct device *dev,
 {
        struct panel_drv_data *ddata = dev_get_drvdata(dev);
        ssize_t len = 0;
-       int ret;
        int i;
 
-       for (i = 0; i < ARRAY_SIZE(ddata->gamma); i++) {
-               ret = snprintf(buf + len, PAGE_SIZE - len, "%u ",
-                               ddata->gamma[i]);
-               if (ret < 0)
-                       return ret;
-               len += ret;
-       }
-       buf[len - 1] = '\n';
+       for (i = 0; i < ARRAY_SIZE(ddata->gamma); i++)
+               len += sysfs_emit_at(buf, len, "%u ", ddata->gamma[i]);
+       if (len)
+               buf[len - 1] = '\n';
 
        return len;
 }