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authorMatthias Kaehlcke <matthias.kaehlcke@gmail.com>2007-05-08 03:32:38 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-08 14:15:16 -0400
commit635244c59c27d3b22c4523d2a951cf553195a966 (patch)
tree21e49799d046275f51efdb2a0c03fd3f97074858 /drivers/isdn/hysdn
parent13af68ee335d4d26ef96a133abc94b2ef051be00 (diff)
fix spinlock usage in hysdn_log_close()
Fix incorrect spinlock use in hysdn_log_close(). The function declared a spinlock on the stack and used it to 'protect' a shared driver structure. The patch simply removes the useless code. Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/isdn/hysdn')
-rw-r--r--drivers/isdn/hysdn/hysdn_proclog.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/isdn/hysdn/hysdn_proclog.c b/drivers/isdn/hysdn/hysdn_proclog.c
index 4c7dedac0e51..27b3991fb0ec 100644
--- a/drivers/isdn/hysdn/hysdn_proclog.c
+++ b/drivers/isdn/hysdn/hysdn_proclog.c
@@ -297,8 +297,6 @@ hysdn_log_close(struct inode *ino, struct file *filep)
297 struct procdata *pd; 297 struct procdata *pd;
298 hysdn_card *card; 298 hysdn_card *card;
299 int retval = 0; 299 int retval = 0;
300 unsigned long flags;
301 spinlock_t hysdn_lock = SPIN_LOCK_UNLOCKED;
302 300
303 lock_kernel(); 301 lock_kernel();
304 if ((filep->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_WRITE) { 302 if ((filep->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_WRITE) {
@@ -308,7 +306,6 @@ hysdn_log_close(struct inode *ino, struct file *filep)
308 /* read access -> log/debug read, mark one further file as closed */ 306 /* read access -> log/debug read, mark one further file as closed */
309 307
310 pd = NULL; 308 pd = NULL;
311 spin_lock_irqsave(&hysdn_lock, flags);
312 inf = *((struct log_data **) filep->private_data); /* get first log entry */ 309 inf = *((struct log_data **) filep->private_data); /* get first log entry */
313 if (inf) 310 if (inf)
314 pd = (struct procdata *) inf->proc_ctrl; /* still entries there */ 311 pd = (struct procdata *) inf->proc_ctrl; /* still entries there */
@@ -331,7 +328,6 @@ hysdn_log_close(struct inode *ino, struct file *filep)
331 inf->usage_cnt--; /* decrement usage count for buffers */ 328 inf->usage_cnt--; /* decrement usage count for buffers */
332 inf = inf->next; 329 inf = inf->next;
333 } 330 }
334 spin_unlock_irqrestore(&hysdn_lock, flags);
335 331
336 if (pd) 332 if (pd)
337 if (pd->if_used <= 0) /* delete buffers if last file closed */ 333 if (pd->if_used <= 0) /* delete buffers if last file closed */