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MFD: ucb1x00-core: use mutexes instead of semaphores

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Convert the ucb1x00 driver to use mutexes rather than the depreciated
semaphores for exclusive access to the ADC.

Acked-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2012-01-21 09:33:38 +00:00
parent ddb1e04a35
commit cae154767a
2 changed files with 9 additions and 10 deletions
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4
include/linux/mfd/ucb1x00.h
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@@ -12,7 +12,7 @@
#include <linux/mfd/mcp.h>
#include <linux/gpio.h>
#include <linux/semaphore.h>
#include <linux/mutex.h>
#define UCB_IO_DATA 0x00
#define UCB_IO_DIR 0x01
@@ -124,7 +124,7 @@ struct ucb1x00 {
spinlock_t lock;
struct mcp *mcp;
unsigned int irq;
struct semaphore adc_sem;
struct mutex adc_mutex;
spinlock_t io_lock;
u16 id;
u16 io_dir;