[PATCH AUTOSEL 5.9 099/147] power: supply: test_power: add missing newlines when printing parameters by sysfs

Sasha Levin
2020-10-26T23:51:33Z

From: Xiongfeng Wang <wangxiongfeng2@huawei.com>

[ Upstream commit c07fa6c1631333f02750cf59f22b615d768b4d8f ]

When I cat some module parameters by sysfs, it displays as follows.
It's better to add a newline for easy reading.

root@syzkaller:~# cd /sys/module/test_power/parameters/
root@syzkaller:/sys/module/test_power/parameters# cat ac_online
onroot@syzkaller:/sys/module/test_power/parameters# cat battery_present
trueroot@syzkaller:/sys/module/test_power/parameters# cat battery_health
goodroot@syzkaller:/sys/module/test_power/parameters# cat battery_status
dischargingroot@syzkaller:/sys/module/test_power/parameters# cat battery_technology
LIONroot@syzkaller:/sys/module/test_power/parameters# cat usb_online
onroot@syzkaller:/sys/module/test_power/parameters#

Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/power/supply/test_power.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/drivers/power/supply/test_power.c b/drivers/power/supply/test_power.c
index 04acd76bbaa12..4895ee5e63a9a 100644
--- a/drivers/power/supply/test_power.c
+++ b/drivers/power/supply/test_power.c
@@ -353,6 +353,7 @@ static int param_set_ac_online(const char *key, const struct kernel_param *kp)
static int param_get_ac_online(char *buffer, const struct kernel_param *kp)
{
strcpy(buffer, map_get_key(map_ac_online, ac_online, "unknown"));
+ strcat(buffer, "\n");
return strlen(buffer);
}

@@ -366,6 +367,7 @@ static int param_set_usb_online(const char *key, const struct kernel_param *kp)
static int param_get_usb_online(char *buffer, const struct kernel_param *kp)
{
strcpy(buffer, map_get_key(map_ac_online, usb_online, "unknown"));
+ strcat(buffer, "\n");
return strlen(buffer);
}

@@ -380,6 +382,7 @@ static int param_set_battery_status(const char *key,
static int param_get_battery_status(char *buffer, const struct kernel_param *kp)
{
strcpy(buffer, map_get_key(map_status, battery_status, "unknown"));
+ strcat(buffer, "\n");
return strlen(buffer);
}

@@ -394,6 +397,7 @@ static int param_set_battery_health(const char *key,
static int param_get_battery_health(char *buffer, const struct kernel_param *kp)
{
strcpy(buffer, map_get_key(map_health, battery_health, "unknown"));
+ strcat(buffer, "\n");
return strlen(buffer);
}

@@ -409,6 +413,7 @@ static int param_get_battery_present(char *buffer,
const struct kernel_param *kp)
{
strcpy(buffer, map_get_key(map_present, battery_present, "unknown"));
+ strcat(buffer, "\n");
return strlen(buffer);
}

@@ -426,6 +431,7 @@ static int param_get_battery_technology(char *buffer,
{
strcpy(buffer,
map_get_key(map_technology, battery_technology, "unknown"));
+ strcat(buffer, "\n");
return strlen(buffer);
}

--
2.25.1