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power: Simplify read_panel_brightness() 

Overengineering.

Change-Id: Ifef79a7e8f2249fdd22099a043303f9686ac014b
This commit is contained in:
Christopher N. Hesse 2016-11-18 18:56:17 +01:00
parent b21592339a
commit e143419bff
1 changed files with 7 additions and 8 deletions
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15
power/power.c
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@ -23,6 +23,7 @@
#include <fcntl.h>
#include <malloc.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
@ -124,11 +125,14 @@ static void sysfs_write(const char *path, char *s)
close(fd);
}
static unsigned int read_panel_brightness() {
unsigned int i, ret = 0;
static int read_panel_brightness() {
int ret = 0;
int read_status;
// brightness can range from 0 to 255, so max. 3 chars + '\0'
char panel_brightness[4];
// for strtol
char *dummy;
const int base = 10;
read_status = sysfs_read(PANEL_BRIGHTNESS, panel_brightness, sizeof(PANEL_BRIGHTNESS));
if (read_status < 0) {
@ -136,12 +140,7 @@ static unsigned int read_panel_brightness() {
return -1;
}
for (i = 0; i < (sizeof(panel_brightness) / sizeof(panel_brightness[0])); i++) {
if (isdigit(panel_brightness[i])) {
ret += (panel_brightness[i] - '0');
}
}
ret = strtol(panel_brightness, &dummy, base);
ALOGV("%s: Panel brightness is: %d", __func__, ret);
return ret;