diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2009-06-07 12:26:52 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-06-10 13:27:54 -0400 |
| commit | 207ee1621722876bb79828689582bf77fd1be200 (patch) | |
| tree | 93ea2cf095ef571dd89c2510e5b7f4e5e85e64ae /net/rfkill/core.c | |
| parent | 9b9c5aaeedfda256ed77094303e2a7242c3290da (diff) | |
| download | lwn-207ee1621722876bb79828689582bf77fd1be200.tar.gz lwn-207ee1621722876bb79828689582bf77fd1be200.zip | |
rfkill: print events when input handler is disabled/enabled
It is useful for debugging when we know if something disabled
the in-kernel rfkill input handler.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/rfkill/core.c')
| -rw-r--r-- | net/rfkill/core.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/rfkill/core.c b/net/rfkill/core.c index 11b7314723df..e161ebc40a35 100644 --- a/net/rfkill/core.c +++ b/net/rfkill/core.c @@ -1134,7 +1134,8 @@ static int rfkill_fop_release(struct inode *inode, struct file *file) #ifdef CONFIG_RFKILL_INPUT if (data->input_handler) - atomic_dec(&rfkill_input_disabled); + if (atomic_dec_return(&rfkill_input_disabled) == 0) + printk(KERN_DEBUG "rfkill: input handler enabled\n"); #endif kfree(data); @@ -1157,7 +1158,8 @@ static long rfkill_fop_ioctl(struct file *file, unsigned int cmd, mutex_lock(&data->mtx); if (!data->input_handler) { - atomic_inc(&rfkill_input_disabled); + if (atomic_inc_return(&rfkill_input_disabled) == 1) + printk(KERN_DEBUG "rfkill: input handler disabled\n"); data->input_handler = true; } |