Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7319f1e6bcf04abd2eddb19747b0933a76f839ce
Commit: 7319f1e6bcf04abd2eddb19747b0933a76f839ce
Parent: f51359a8fb1bb00ae87051991e59d0f92d90604b
Author: Michael Buesch <[EMAIL PROTECTED]>
AuthorDate: Sun Oct 28 15:16:50 2007 +0100
Committer: David S. Miller <[EMAIL PROTECTED]>
CommitDate: Sat Nov 10 22:00:15 2007 -0800
rfkill: Use mutex_lock() at register and add sanity check
Replace mutex_lock_interruptible() by mutex_lock() in rfkill_register(),
as interruptible doesn't make sense there.
Add a sanity check for rfkill->type, as that's used for an unchecked
dereference
in an array and might cause hard to debug crashes if the driver sets this
to an invalid value.
Signed-off-by: Michael Buesch <[EMAIL PROTECTED]>
Signed-off-by: Ivo van Doorn <[EMAIL PROTECTED]>
Signed-off-by: John W. Linville <[EMAIL PROTECTED]>
---
net/rfkill/rfkill.c | 20 +++++++++-----------
1 files changed, 9 insertions(+), 11 deletions(-)
diff --git a/net/rfkill/rfkill.c b/net/rfkill/rfkill.c
index bbfbb9e..47e8cd0 100644
--- a/net/rfkill/rfkill.c
+++ b/net/rfkill/rfkill.c
@@ -276,21 +276,17 @@ static struct class rfkill_class = {
static int rfkill_add_switch(struct rfkill *rfkill)
{
- int retval;
-
- retval = mutex_lock_interruptible(&rfkill_mutex);
- if (retval)
- return retval;
+ int error;
- retval = rfkill_toggle_radio(rfkill, rfkill_states[rfkill->type]);
- if (retval)
- goto out;
+ mutex_lock(&rfkill_mutex);
- list_add_tail(&rfkill->node, &rfkill_list);
+ error = rfkill_toggle_radio(rfkill, rfkill_states[rfkill->type]);
+ if (!error)
+ list_add_tail(&rfkill->node, &rfkill_list);
- out:
mutex_unlock(&rfkill_mutex);
- return retval;
+
+ return error;
}
static void rfkill_remove_switch(struct rfkill *rfkill)
@@ -387,6 +383,8 @@ int rfkill_register(struct rfkill *rfkill)
if (!rfkill->toggle_radio)
return -EINVAL;
+ if (rfkill->type >= RFKILL_TYPE_MAX)
+ return -EINVAL;
snprintf(dev->bus_id, sizeof(dev->bus_id),
"rfkill%ld", (long)atomic_inc_return(&rfkill_no) - 1);
-
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