aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/char/nwflash.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/char/nwflash.c')
-rw-r--r--drivers/char/nwflash.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/char/nwflash.c b/drivers/char/nwflash.c
index ca41d62b1d9d..8865387d3448 100644
--- a/drivers/char/nwflash.c
+++ b/drivers/char/nwflash.c
@@ -27,6 +27,7 @@
27#include <linux/rwsem.h> 27#include <linux/rwsem.h>
28#include <linux/init.h> 28#include <linux/init.h>
29#include <linux/smp_lock.h> 29#include <linux/smp_lock.h>
30#include <linux/mutex.h>
30 31
31#include <asm/hardware/dec21285.h> 32#include <asm/hardware/dec21285.h>
32#include <asm/io.h> 33#include <asm/io.h>
@@ -56,7 +57,7 @@ static int gbWriteEnable;
56static int gbWriteBase64Enable; 57static int gbWriteBase64Enable;
57static volatile unsigned char *FLASH_BASE; 58static volatile unsigned char *FLASH_BASE;
58static int gbFlashSize = KFLASH_SIZE; 59static int gbFlashSize = KFLASH_SIZE;
59static DECLARE_MUTEX(nwflash_sem); 60static DEFINE_MUTEX(nwflash_mutex);
60 61
61extern spinlock_t gpio_lock; 62extern spinlock_t gpio_lock;
62 63
@@ -140,7 +141,7 @@ static ssize_t flash_read(struct file *file, char __user *buf, size_t size,
140 /* 141 /*
141 * We now lock against reads and writes. --rmk 142 * We now lock against reads and writes. --rmk
142 */ 143 */
143 if (down_interruptible(&nwflash_sem)) 144 if (mutex_lock_interruptible(&nwflash_mutex))
144 return -ERESTARTSYS; 145 return -ERESTARTSYS;
145 146
146 ret = copy_to_user(buf, (void *)(FLASH_BASE + p), count); 147 ret = copy_to_user(buf, (void *)(FLASH_BASE + p), count);
@@ -149,7 +150,7 @@ static ssize_t flash_read(struct file *file, char __user *buf, size_t size,
149 *ppos += count; 150 *ppos += count;
150 } else 151 } else
151 ret = -EFAULT; 152 ret = -EFAULT;
152 up(&nwflash_sem); 153 mutex_unlock(&nwflash_mutex);
153 } 154 }
154 return ret; 155 return ret;
155} 156}
@@ -188,7 +189,7 @@ static ssize_t flash_write(struct file *file, const char __user *buf,
188 /* 189 /*
189 * We now lock against reads and writes. --rmk 190 * We now lock against reads and writes. --rmk
190 */ 191 */
191 if (down_interruptible(&nwflash_sem)) 192 if (mutex_lock_interruptible(&nwflash_mutex))
192 return -ERESTARTSYS; 193 return -ERESTARTSYS;
193 194
194 written = 0; 195 written = 0;
@@ -277,7 +278,7 @@ static ssize_t flash_write(struct file *file, const char __user *buf,
277 */ 278 */
278 leds_event(led_release); 279 leds_event(led_release);
279 280
280 up(&nwflash_sem); 281 mutex_unlock(&nwflash_mutex);
281 282
282 return written; 283 return written;
283} 284}