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authorJohannes Berg <johannes@sipsolutions.net>2009-06-07 12:26:52 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-06-10 13:27:54 -0400
commit207ee1621722876bb79828689582bf77fd1be200 (patch)
tree93ea2cf095ef571dd89c2510e5b7f4e5e85e64ae /net/rfkill
parent9b9c5aaeedfda256ed77094303e2a7242c3290da (diff)
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')
-rw-r--r--net/rfkill/core.c6
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;
}

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