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authorIngo Molnar <mingo@elte.hu>2006-01-16 22:14:00 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-16 23:15:26 -0800
commit8f56a31ad616b13414cf764f620f75f45dac26e6 (patch)
tree4e53d466c7ef81140ad4f92c78ae7e07f8ceaa87 /drivers
parentfd279197b1df6b46076991ca0e1f7faa8f3d8028 (diff)
[PATCH] drivers/char/esp.c spinlock fix
There's incorrect spinlock usage in espserial_init(): autoconfig() uses info->lock before it's initialized. The fix is to initialize the spinlock earlier. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/char/esp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/esp.c b/drivers/char/esp.c
index dd5dc8fa490..3f3ac039f4d 100644
--- a/drivers/char/esp.c
+++ b/drivers/char/esp.c
@@ -2492,6 +2492,7 @@ static int __init espserial_init(void)
}
memset((void *)info, 0, sizeof(struct esp_struct));
+ spin_lock_init(&info->lock);
/* rx_trigger, tx_trigger are needed by autoconfig */
info->config.rx_trigger = rx_trigger;
info->config.tx_trigger = tx_trigger;
@@ -2528,7 +2529,6 @@ static int __init espserial_init(void)
init_waitqueue_head(&info->close_wait);
init_waitqueue_head(&info->delta_msr_wait);
init_waitqueue_head(&info->break_wait);
- spin_lock_init(&info->lock);
ports = info;
printk(KERN_INFO "ttyP%d at 0x%04x (irq = %d) is an ESP ",
info->line, info->port, info->irq);