linux-kernel - [PATCH 1/5] drivers/isdn/capi: fix sparse warning: context imbalance

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Date:	Thu, 26 Feb 2009 00:08:40 +0100
From:	Hannes Eder <hannes@...neseder.net>
To:	netdev@...r.kernel.org
Cc:	kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/5] drivers/isdn/capi: fix sparse warning: context imbalance

Impact: Attribute functions with __acquires(...) resp. __releases(...).

Fix this sparse warnings:
  drivers/isdn/capi/kcapi_proc.c:241:13: warning: context imbalance in 'capi_driver_start' - wrong count at exit
  drivers/isdn/capi/kcapi_proc.c:252:13: warning: context imbalance in 'capi_driver_stop' - unexpected unlock

Signed-off-by: Hannes Eder <hannes@...neseder.net>
---
 drivers/isdn/capi/kcapi_proc.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/isdn/capi/kcapi_proc.c b/drivers/isdn/capi/kcapi_proc.c
index c29208b..50ed778 100644
--- a/drivers/isdn/capi/kcapi_proc.c
+++ b/drivers/isdn/capi/kcapi_proc.c
@@ -239,6 +239,7 @@ static const struct file_operations proc_applstats_ops = {
 // ---------------------------------------------------------------------------
 
 static void *capi_driver_start(struct seq_file *seq, loff_t *pos)
+	__acquires(&capi_drivers_list_lock)
 {
 	read_lock(&capi_drivers_list_lock);
 	return seq_list_start(&capi_drivers, *pos);
@@ -250,6 +251,7 @@ static void *capi_driver_next(struct seq_file *seq, void *v, loff_t *pos)
 }
 
 static void capi_driver_stop(struct seq_file *seq, void *v)
+	__releases(&capi_drivers_list_lock)
 {
 	read_unlock(&capi_drivers_list_lock);
 }

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