From 7646ea88af80a92f2775e17d4283830d7f09ea2d Mon Sep 17 00:00:00 2001 From: Henrique de Moraes Holschuh Date: Sun, 11 Jan 2009 03:01:04 -0200 Subject: [PATCH] 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 Signed-off-by: Len Brown --- drivers/platform/x86/thinkpad_acpi.c | 26 +++++++++++++------------- 1 file 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); -- 2.34.1