Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5ff7205dd9084c96cf2bedc4d0481790c5a7a635
Commit: 5ff7205dd9084c96cf2bedc4d0481790c5a7a635
Parent: 722d5e4ae89f061582cc46ccbbd3b5ae87a6e165
Author: Jiri Slaby <[EMAIL PROTECTED]>
AuthorDate: Sat Feb 10 01:45:23 2007 -0800
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Sun Feb 11 10:51:29 2007 -0800
[PATCH] Char: mxser_new, lock count and flags
Both open count and INITIALIZED flag should be changed under lock.
Signed-off-by: Jiri Slaby <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
drivers/char/mxser_new.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/char/mxser_new.c b/drivers/char/mxser_new.c
index 1c8e00c..d52ecff 100644
--- a/drivers/char/mxser_new.c
+++ b/drivers/char/mxser_new.c
@@ -853,9 +853,9 @@ static int mxser_startup(struct mxser_port *info)
* and set the speed of the serial port
*/
mxser_change_speed(info, NULL);
+ info->flags |= ASYNC_INITIALIZED;
spin_unlock_irqrestore(&info->slock, flags);
- info->flags |= ASYNC_INITIALIZED;
return 0;
}
@@ -925,6 +925,7 @@ static void mxser_shutdown(struct mxser_port *info)
static int mxser_open(struct tty_struct *tty, struct file *filp)
{
struct mxser_port *info;
+ unsigned long flags;
int retval, line;
line = tty->index;
@@ -941,7 +942,9 @@ static int mxser_open(struct tty_struct *tty, struct file
*filp)
/*
* Start up serial port
*/
+ spin_lock_irqsave(&info->slock, flags);
info->count++;
+ spin_unlock_irqrestore(&info->slock, flags);
retval = mxser_startup(info);
if (retval)
return retval;
-
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