linux-kernel - [PATCH 9/9] [media] tm6000: Use common error handling code in tm6000_prepare

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Date:   Fri, 15 Sep 2017 10:00:28 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-media@...r.kernel.org, Andi Shyti <andi.shyti@...sung.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Arvind Yadav <arvind.yadav.cs@...il.com>,
        Bhumika Goyal <bhumirks@...il.com>,
        Christophe Jaillet <christophe.jaillet@...adoo.fr>,
        David Härdeman <david@...deman.nu>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Santosh Kumar Singh <kumar.san1093@...il.com>,
        Sean Young <sean@...s.org>,
        Wei Yongjun <weiyongjun1@...wei.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 9/9] [media] tm6000: Use common error handling code in
 tm6000_prepare_isoc()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Fri, 15 Sep 2017 08:02:33 +0200

Add a jump target so that a bit of exception handling can be better reused
at the end of this function.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/media/usb/tm6000/tm6000-video.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/media/usb/tm6000/tm6000-video.c b/drivers/media/usb/tm6000/tm6000-video.c
index 0d45f35e1697..bfdeb41ed3a1 100644
--- a/drivers/media/usb/tm6000/tm6000-video.c
+++ b/drivers/media/usb/tm6000/tm6000-video.c
@@ -602,7 +602,5 @@ static int tm6000_prepare_isoc(struct tm6000_core *dev)
-	if (!dev->isoc_ctl.transfer_buffer) {
-		kfree(dev->isoc_ctl.urb);
-		return -ENOMEM;
-	}
+	if (!dev->isoc_ctl.transfer_buffer)
+		goto free_urb;
 
 	dprintk(dev, V4L2_DEBUG_QUEUE, "Allocating %d x %d packets (%d bytes) of %d bytes each to handle %u size\n",
 		    max_packets, num_bufs, sb_size,
@@ -616,7 +614,6 @@ static int tm6000_prepare_isoc(struct tm6000_core *dev)
 		tm6000_free_urb_buffers(dev);
-		kfree(dev->isoc_ctl.urb);
 		kfree(dev->isoc_ctl.transfer_buffer);
-		return -ENOMEM;
+		goto free_urb;
 	}
 
 	/* allocate urbs and transfer buffers */
@@ -646,6 +643,10 @@ static int tm6000_prepare_isoc(struct tm6000_core *dev)
 	}
 
 	return 0;
+
+free_urb:
+	kfree(dev->isoc_ctl.urb);
+	return -ENOMEM;
 }
 
 static int tm6000_start_thread(struct tm6000_core *dev)
-- 
2.14.1