There is a function, `strstarts()`, in linux/string.h
to check if a string is prefix of another. So remove
the custom version from the driver.
Signed-off-by: Barnabás Pőcze <pobrn@xxxxxxxxxxxxxx>
---
drivers/platform/x86/thinkpad_acpi.c | 58 +++++++++++++---------------
1 file changed, 27 insertions(+), 31 deletions(-)
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 6a823b850a77..7a1d5402697e 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -263,9 +263,6 @@ enum tpacpi_hkey_event_t {
#define TPACPI_DBG_BRGHT 0x0020
#define TPACPI_DBG_MIXER 0x0040
-#define strlencmp(a, b) (strncmp((a), (b), strlen(b)))
-
-
/****************************************************************************
* Driver-wide structs and misc. variables
*/
@@ -1333,9 +1330,9 @@ static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
return -ENODEV;
while ((cmd = strsep(&buf, ","))) {
- if (strlencmp(cmd, "enable") == 0)
+ if (strstarts(cmd, "enable"))
status = TPACPI_RFK_RADIO_ON;
- else if (strlencmp(cmd, "disable") == 0)
+ else if (strstarts(cmd, "disable"))
status = TPACPI_RFK_RADIO_OFF;
else
return -EINVAL;
@@ -4196,12 +4193,12 @@ static int hotkey_write(char *buf)
res = 0;
while ((cmd = strsep(&buf, ","))) {
- if (strlencmp(cmd, "enable") == 0) {
+ if (strstarts(cmd, "enable")) {
hotkey_enabledisable_warn(1);
- } else if (strlencmp(cmd, "disable") == 0) {
+ } else if (strstarts(cmd, "disable")) {
hotkey_enabledisable_warn(0);
res = -EPERM;
- } else if (strlencmp(cmd, "reset") == 0) {
+ } else if (strstarts(cmd, "reset")) {
mask = (hotkey_all_mask | hotkey_source_mask)
& ~hotkey_reserved_mask;
} else if (sscanf(cmd, "0x%x", &mask) == 1) {
@@ -5223,33 +5220,33 @@ static int video_write(char *buf)
disable = 0;
while ((cmd = strsep(&buf, ","))) {
- if (strlencmp(cmd, "lcd_enable") == 0) {
+ if (strstarts(cmd, "lcd_enable")) {
enable |= TP_ACPI_VIDEO_S_LCD;
- } else if (strlencmp(cmd, "lcd_disable") == 0) {
+ } else if (strstarts(cmd, "lcd_disable")) {
disable |= TP_ACPI_VIDEO_S_LCD;
- } else if (strlencmp(cmd, "crt_enable") == 0) {
+ } else if (strstarts(cmd, "crt_enable")) {
enable |= TP_ACPI_VIDEO_S_CRT;
- } else if (strlencmp(cmd, "crt_disable") == 0) {
+ } else if (strstarts(cmd, "crt_disable")) {
disable |= TP_ACPI_VIDEO_S_CRT;
} else if (video_supported == TPACPI_VIDEO_NEW &&
- strlencmp(cmd, "dvi_enable") == 0) {
+ strstarts(cmd, "dvi_enable")) {
enable |= TP_ACPI_VIDEO_S_DVI;
} else if (video_supported == TPACPI_VIDEO_NEW &&
- strlencmp(cmd, "dvi_disable") == 0) {
+ strstarts(cmd, "dvi_disable")) {
disable |= TP_ACPI_VIDEO_S_DVI;
- } else if (strlencmp(cmd, "auto_enable") == 0) {
+ } else if (strstarts(cmd, "auto_enable")) {
res = video_autosw_set(1);
if (res)
return res;
- } else if (strlencmp(cmd, "auto_disable") == 0) {
+ } else if (strstarts(cmd, "auto_disable")) {
res = video_autosw_set(0);
if (res)
return res;
- } else if (strlencmp(cmd, "video_switch") == 0) {
+ } else if (strstarts(cmd, "video_switch")) {
res = video_outputsw_cycle();
if (res)
return res;
- } else if (strlencmp(cmd, "expand_toggle") == 0) {
+ } else if (strstarts(cmd, "expand_toggle")) {
res = video_expand_toggle();
if (res)
return res;
@@ -5642,9 +5639,9 @@ static int light_write(char *buf)
return -ENODEV;
while ((cmd = strsep(&buf, ","))) {
- if (strlencmp(cmd, "on") == 0) {
+ if (strstarts(cmd, "on")) {
newstatus = 1;
- } else if (strlencmp(cmd, "off") == 0) {
+ } else if (strstarts(cmd, "off")) {
newstatus = 0;
} else
return -EINVAL;
@@ -7115,10 +7112,10 @@ static int brightness_write(char *buf)
return level;
while ((cmd = strsep(&buf, ","))) {
- if (strlencmp(cmd, "up") == 0) {
+ if (strstarts(cmd, "up")) {
if (level < bright_maxlvl)
level++;
- } else if (strlencmp(cmd, "down") == 0) {
+ } else if (strstarts(cmd, "down")) {
if (level > 0)
level--;
} else if (sscanf(cmd, "level %d", &level) == 1 &&
@@ -7867,13 +7864,13 @@ static int volume_write(char *buf)
while ((cmd = strsep(&buf, ","))) {
if (!tp_features.mixer_no_level_control) {
- if (strlencmp(cmd, "up") == 0) {
+ if (strstarts(cmd, "up")) {
if (new_mute)
new_mute = 0;
else if (new_level < TP_EC_VOLUME_MAX)
new_level++;
continue;
- } else if (strlencmp(cmd, "down") == 0) {
+ } else if (strstarts(cmd, "down")) {
if (new_mute)
new_mute = 0;
else if (new_level > 0)
@@ -7885,9 +7882,9 @@ static int volume_write(char *buf)
continue;
}
}
- if (strlencmp(cmd, "mute") == 0)
+ if (strstarts(cmd, "mute"))
new_mute = TP_EC_AUDIO_MUTESW_MSK;
- else if (strlencmp(cmd, "unmute") == 0)
+ else if (strstarts(cmd, "unmute"))
new_mute = 0;
else
return -EINVAL;
@@ -9110,10 +9107,9 @@ static int fan_write_cmd_level(const char *cmd, int *rc)
{
int level;
- if (strlencmp(cmd, "level auto") == 0)
+ if (strstarts(cmd, "level auto"))
level = TP_EC_FAN_AUTO;
- else if ((strlencmp(cmd, "level disengaged") == 0) ||
- (strlencmp(cmd, "level full-speed") == 0))
+ else if (strstarts(cmd, "level disengaged") || strstarts(cmd, "level full-speed"))
level = TP_EC_FAN_FULLSPEED;
else if (sscanf(cmd, "level %d", &level) != 1)
return 0;
@@ -9131,7 +9127,7 @@ static int fan_write_cmd_level(const char *cmd, int *rc)
static int fan_write_cmd_enable(const char *cmd, int *rc)
{
- if (strlencmp(cmd, "enable") != 0)
+ if (!strstarts(cmd, "enable"))
return 0;
*rc = fan_set_enable();
@@ -9146,7 +9142,7 @@ static int fan_write_cmd_enable(const char *cmd, int *rc)
static int fan_write_cmd_disable(const char *cmd, int *rc)
{
- if (strlencmp(cmd, "disable") != 0)
+ if (!strstarts(cmd, "disable"))
return 0;
*rc = fan_set_disable();
--
2.38.1
