Thread (4 messages) 4 messages, 2 authors, 2015-11-30

[rtc-linux] [PATCH 1/2] rtc: fix module reference count in rtc-proc

From: Geliang Tang <hidden>
Date: 2015-11-07 04:01:46
Also in: lkml
Subsystem: real time clock (rtc) subsystem, the rest · Maintainers: Alexandre Belloni, Linus Torvalds

rtc-proc.c is not built as a module. Thus, rather than dealing with
THIS_MODULE's reference count, we should deal with rtc->owner's
reference count.

Signed-off-by: Geliang Tang <redacted>
---
 drivers/rtc/rtc-proc.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/rtc/rtc-proc.c b/drivers/rtc/rtc-proc.c
index ffa69e1..31e7e23 100644
--- a/drivers/rtc/rtc-proc.c
+++ b/drivers/rtc/rtc-proc.c
@@ -112,19 +112,21 @@ static int rtc_proc_open(struct inode *inode, struct file *file)
 	int ret;
 	struct rtc_device *rtc = PDE_DATA(inode);
 
-	if (!try_module_get(THIS_MODULE))
+	if (!try_module_get(rtc->owner))
 		return -ENODEV;
 
 	ret = single_open(file, rtc_proc_show, rtc);
 	if (ret)
-		module_put(THIS_MODULE);
+		module_put(rtc->owner);
 	return ret;
 }
 
 static int rtc_proc_release(struct inode *inode, struct file *file)
 {
 	int res = single_release(inode, file);
-	module_put(THIS_MODULE);
+	struct rtc_device *rtc = PDE_DATA(inode);
+
+	module_put(rtc->owner);
 	return res;
 }
 
-- 
2.5.0


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