From: Matthias Kaehlcke Date: Tue, 8 May 2007 07:32:38 +0000 (-0700) Subject: fix spinlock usage in hysdn_log_close() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=635244c59c27d3b22c4523d2a951cf553195a966;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git 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 Cc: Karsten Keil Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/isdn/hysdn/hysdn_proclog.c b/drivers/isdn/hysdn/hysdn_proclog.c index 4c7dedac0e5..27b3991fb0e 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) struct procdata *pd; hysdn_card *card; int retval = 0; - unsigned long flags; - spinlock_t hysdn_lock = SPIN_LOCK_UNLOCKED; lock_kernel(); if ((filep->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_WRITE) { @@ -308,7 +306,6 @@ hysdn_log_close(struct inode *ino, struct file *filep) /* read access -> log/debug read, mark one further file as closed */ pd = NULL; - spin_lock_irqsave(&hysdn_lock, flags); inf = *((struct log_data **) filep->private_data); /* get first log entry */ if (inf) pd = (struct procdata *) inf->proc_ctrl; /* still entries there */ @@ -331,7 +328,6 @@ hysdn_log_close(struct inode *ino, struct file *filep) inf->usage_cnt--; /* decrement usage count for buffers */ inf = inf->next; } - spin_unlock_irqrestore(&hysdn_lock, flags); if (pd) if (pd->if_used <= 0) /* delete buffers if last file closed */