[PATCH] tlclk: fix handling of device major

tlclk calls register_chrdev() and permits register_chrdev() to allocate the
major, but it promptly forgets what that major was.  So if there's no hardware
present you still get "telco_clock" appearing in /proc/devices and, I assume,
an oops reading /proc/devices if tlclk was a module.

Fix.

Mark, I'd suggest that that we not call register_chrdev() until _after_ we've
established that the hardware is present.

Cc: Mark Gross <mgross@linux.intel.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/char/tlclk.c b/drivers/char/tlclk.c
index 4c272189cd42..2546637a55c0 100644
--- a/drivers/char/tlclk.c
+++ b/drivers/char/tlclk.c
@@ -767,6 +767,7 @@ static int __init tlclk_init(void)
                 printk(KERN_ERR "tlclk: can't get major %d.\n", tlclk_major);
                 return ret;
         }
+        tlclk_major = ret;
         alarm_events = kzalloc( sizeof(struct tlclk_alarms), GFP_KERNEL);
         if (!alarm_events)
                 goto out1;