ACPI: thinkpad-acpi: use killable instead of interruptible mutexes

Unfortunately, POSIX in all of its braindamage, do not state that userspace has
to deal with EINTR in read/write and friends... so, lesser code just doesn't.

Switch from *_interruptible to *_killable on the sysfs- and procfs-related
mutexes.  This closes this possible can of worms.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 13 insertions, 13 deletions

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index c1d40410ad79..7670c8ee63d1 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -1878,7 +1878,7 @@ static ssize_t hotkey_mask_show(struct device *dev,
 {
         int res;
 
-        if (mutex_lock_interruptible(&hotkey_mutex))
+        if (mutex_lock_killable(&hotkey_mutex))
                 return -ERESTARTSYS;
         res = hotkey_mask_get();
         mutex_unlock(&hotkey_mutex);
@@ -1897,7 +1897,7 @@ static ssize_t hotkey_mask_store(struct device *dev,
         if (parse_strtoul(buf, 0xffffffffUL, &t))
                 return -EINVAL;
 
-        if (mutex_lock_interruptible(&hotkey_mutex))
+        if (mutex_lock_killable(&hotkey_mutex))
                 return -ERESTARTSYS;
 
         res = hotkey_mask_set(t);
@@ -1983,7 +1983,7 @@ static ssize_t hotkey_source_mask_store(struct device *dev,
                 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0))
                 return -EINVAL;
 
-        if (mutex_lock_interruptible(&hotkey_mutex))
+        if (mutex_lock_killable(&hotkey_mutex))
                 return -ERESTARTSYS;
 
         HOTKEY_CONFIG_CRITICAL_START
@@ -2018,7 +2018,7 @@ static ssize_t hotkey_poll_freq_store(struct device *dev,
         if (parse_strtoul(buf, 25, &t))
                 return -EINVAL;
 
-        if (mutex_lock_interruptible(&hotkey_mutex))
+        if (mutex_lock_killable(&hotkey_mutex))
                 return -ERESTARTSYS;
 
         hotkey_poll_freq = t;
@@ -2754,7 +2754,7 @@ static int hotkey_read(char *p)
                 return len;
         }
 
-        if (mutex_lock_interruptible(&hotkey_mutex))
+        if (mutex_lock_killable(&hotkey_mutex))
                 return -ERESTARTSYS;
         res = hotkey_status_get(&status);
         if (!res)
@@ -2785,7 +2785,7 @@ static int hotkey_write(char *buf)
         if (!tp_features.hotkey)
                 return -ENODEV;
 
-        if (mutex_lock_interruptible(&hotkey_mutex))
+        if (mutex_lock_killable(&hotkey_mutex))
                 return -ERESTARTSYS;
 
         status = -1;
@@ -5311,7 +5311,7 @@ static int brightness_set(int value)
             value < 0)
                 return -EINVAL;
 
-        res = mutex_lock_interruptible(&brightness_mutex);
+        res = mutex_lock_killable(&brightness_mutex);
         if (res < 0)
                 return res;
 
@@ -5849,7 +5849,7 @@ static int fan_get_status_safe(u8 *status)
         int rc;
         u8 s;
 
-        if (mutex_lock_interruptible(&fan_mutex))
+        if (mutex_lock_killable(&fan_mutex))
                 return -ERESTARTSYS;
         rc = fan_get_status(&s);
         if (!rc)
@@ -5932,7 +5932,7 @@ static int fan_set_level_safe(int level)
         if (!fan_control_allowed)
                 return -EPERM;
 
-        if (mutex_lock_interruptible(&fan_mutex))
+        if (mutex_lock_killable(&fan_mutex))
                 return -ERESTARTSYS;
 
         if (level == TPACPI_FAN_LAST_LEVEL)
@@ -5954,7 +5954,7 @@ static int fan_set_enable(void)
         if (!fan_control_allowed)
                 return -EPERM;
 
-        if (mutex_lock_interruptible(&fan_mutex))
+        if (mutex_lock_killable(&fan_mutex))
                 return -ERESTARTSYS;
 
         switch (fan_control_access_mode) {
@@ -6009,7 +6009,7 @@ static int fan_set_disable(void)
         if (!fan_control_allowed)
                 return -EPERM;
 
-        if (mutex_lock_interruptible(&fan_mutex))
+        if (mutex_lock_killable(&fan_mutex))
                 return -ERESTARTSYS;
 
         rc = 0;
@@ -6047,7 +6047,7 @@ static int fan_set_speed(int speed)
         if (!fan_control_allowed)
                 return -EPERM;
 
-        if (mutex_lock_interruptible(&fan_mutex))
+        if (mutex_lock_killable(&fan_mutex))
                 return -ERESTARTSYS;
 
         rc = 0;
@@ -6249,7 +6249,7 @@ static ssize_t fan_pwm1_store(struct device *dev,
         /* scale down from 0-255 to 0-7 */
         newlevel = (s >> 5) & 0x07;
 
-        if (mutex_lock_interruptible(&fan_mutex))
+        if (mutex_lock_killable(&fan_mutex))
                 return -ERESTARTSYS;
 
         rc = fan_get_status(&status);