linux-kernel - [PATCH] video/fbdev/dnfb: Use common error handling code in dnfb

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Date:   Sun, 5 Nov 2017 15:43:05 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] video/fbdev/dnfb: Use common error handling code in
 dnfb_probe()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sun, 5 Nov 2017 14:54:52 +0100

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

This issue was detected by using the Coccinelle software.

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

diff --git a/drivers/video/fbdev/dnfb.c b/drivers/video/fbdev/dnfb.c
index 09415009d797..5505fa00c634 100644
--- a/drivers/video/fbdev/dnfb.c
+++ b/drivers/video/fbdev/dnfb.c
@@ -242,16 +242,13 @@ static int dnfb_probe(struct platform_device *dev)
 	info->screen_base = (u_char *) info->fix.smem_start;
 
 	err = fb_alloc_cmap(&info->cmap, 2, 0);
-	if (err < 0) {
-		framebuffer_release(info);
-		return err;
-	}
+	if (err < 0)
+		goto release_framebuffer;
 
 	err = register_framebuffer(info);
 	if (err < 0) {
 		fb_dealloc_cmap(&info->cmap);
-		framebuffer_release(info);
-		return err;
+		goto release_framebuffer;
 	}
 	platform_set_drvdata(dev, info);
 
@@ -265,6 +262,10 @@ static int dnfb_probe(struct platform_device *dev)
 
 	printk("apollo frame buffer alive and kicking !\n");
 	return err;
+
+release_framebuffer:
+	framebuffer_release(info);
+	return err;
 }
 
 static struct platform_driver dnfb_driver = {
-- 
2.15.0