From: Douglas Schilling Landgraf <dougsland@gmail.com>
Date: Sun, 27 Jan 2008 17:29:51 +0000 (-0300)
Subject: V4L/DVB (7092): radio-sf16fmr2: fix request_region() validation [bugzilla 9699]
X-Git-Tag: firefly_0821_release~22392^2~41
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=dd49f30ca032464839085ec3a54dd9917829c891;p=firefly-linux-kernel-4.4.55.git

V4L/DVB (7092): radio-sf16fmr2: fix request_region() validation [bugzilla 9699]

This patch changed the request_region() validation to avoid invalid return.
Thanks to Roland Kletzing <devzero@web.de> for bug report and data collection.

Signed-off-by: Douglas Schilling Landgraf <dougsland@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
---

diff --git a/drivers/media/radio/radio-sf16fmr2.c b/drivers/media/radio/radio-sf16fmr2.c
index f7c8b000404f..ebc5fbbc38bb 100644
--- a/drivers/media/radio/radio-sf16fmr2.c
+++ b/drivers/media/radio/radio-sf16fmr2.c
@@ -470,9 +470,8 @@ static int __init fmr2_init(void)
 
 	mutex_init(&lock);
 
-	if (request_region(io, 2, "sf16fmr2"))
-	{
-		printk(KERN_ERR "fmr2: port 0x%x already in use\n", io);
+	if (!request_region(io, 2, "sf16fmr2")) {
+		printk(KERN_ERR "radio-sf16fmr2: request_region failed!\n");
 		return -EBUSY;
 	}