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sony-laptop: Make sony_pic_set_wwanpower not take mutexes

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For consistency with __sony_pic_set_bluetoothpower, this is also needed
later to allow setting the wwanpower attribute from the resume path and
only lock the mutex once.

Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Mattia Dongili 2009-03-26 21:58:23 +09:00 committed by Len Brown
parent f5acf5e898
commit c9f1e6f67a
1 changed files with 5 additions and 7 deletions
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12
drivers/platform/x86/sony-laptop.c
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@ -2001,18 +2001,14 @@ int sony_pic_camera_command(int command, u8 value)
EXPORT_SYMBOL(sony_pic_camera_command);
/* gprs/edge modem (SZ460N and SZ210P), thanks to Joshua Wise */
static void sony_pic_set_wwanpower(u8 state)
static void __sony_pic_set_wwanpower(u8 state)
{
state = !!state;
mutex_lock(&spic_dev.lock);
if (spic_dev.wwan_power == state) {
mutex_unlock(&spic_dev.lock);
if (spic_dev.wwan_power == state)
return;
}
sony_pic_call2(0xB0, state);
sony_pic_call1(0x82);
spic_dev.wwan_power = state;
mutex_unlock(&spic_dev.lock);
}
static ssize_t sony_pic_wwanpower_store(struct device *dev,
@ -2024,7 +2020,9 @@ static ssize_t sony_pic_wwanpower_store(struct device *dev,
return -EINVAL;
value = simple_strtoul(buffer, NULL, 10);
sony_pic_set_wwanpower(value);
mutex_lock(&spic_dev.lock);
__sony_pic_set_wwanpower(value);
mutex_unlock(&spic_dev.lock);
return count;
}