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authorJulia Lawall <Julia.Lawall@lip6.fr>2012-04-18 21:37:08 +0200
committerFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>2012-04-21 21:47:49 +0000
commit045dfdb5c5e8fe49afe1de82fb94eaae8121e059 (patch)
tree6bd555424eac28a2b13277920fbc358a39c2de88 /drivers
parent49a8ee8ac3f20e4d8fe284012c082a793982d48f (diff)
downloadop-kernel-dev-045dfdb5c5e8fe49afe1de82fb94eaae8121e059.zip
op-kernel-dev-045dfdb5c5e8fe49afe1de82fb94eaae8121e059.tar.gz
drivers/video/ep93xx-fb.c: clean up error-handling code
There were two problems in this code: failure of the setup function should free locally allocated resources like other nearby failures, and the test if (&info->cmap) can never be false. To generally clean things up, this patch reorders the error handling code at the failed label and adds labels so that the conditionals are not necessary. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ryan Mallon <rmallon@gmail.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/video/ep93xx-fb.c32
1 files changed, 17 insertions, 15 deletions
diff --git a/drivers/video/ep93xx-fb.c b/drivers/video/ep93xx-fb.c
index f8babbe..345d962 100644
--- a/drivers/video/ep93xx-fb.c
+++ b/drivers/video/ep93xx-fb.c
@@ -507,16 +507,16 @@ static int __devinit ep93xxfb_probe(struct platform_device *pdev)
err = fb_alloc_cmap(&info->cmap, 256, 0);
if (err)
- goto failed;
+ goto failed_cmap;
err = ep93xxfb_alloc_videomem(info);
if (err)
- goto failed;
+ goto failed_videomem;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
err = -ENXIO;
- goto failed;
+ goto failed_resource;
}
/*
@@ -532,7 +532,7 @@ static int __devinit ep93xxfb_probe(struct platform_device *pdev)
fbi->mmio_base = ioremap(res->start, resource_size(res));
if (!fbi->mmio_base) {
err = -ENXIO;
- goto failed;
+ goto failed_resource;
}
strcpy(info->fix.id, pdev->name);
@@ -553,24 +553,24 @@ static int __devinit ep93xxfb_probe(struct platform_device *pdev)
if (err == 0) {
dev_err(info->dev, "No suitable video mode found\n");
err = -EINVAL;
- goto failed;
+ goto failed_mode;
}
if (mach_info->setup) {
err = mach_info->setup(pdev);
if (err)
- return err;
+ goto failed_mode;
}
err = ep93xxfb_check_var(&info->var, info);
if (err)
- goto failed;
+ goto failed_check;
fbi->clk = clk_get(info->dev, NULL);
if (IS_ERR(fbi->clk)) {
err = PTR_ERR(fbi->clk);
fbi->clk = NULL;
- goto failed;
+ goto failed_check;
}
ep93xxfb_set_par(info);
@@ -585,15 +585,17 @@ static int __devinit ep93xxfb_probe(struct platform_device *pdev)
return 0;
failed:
- if (fbi->clk)
- clk_put(fbi->clk);
- if (fbi->mmio_base)
- iounmap(fbi->mmio_base);
- ep93xxfb_dealloc_videomem(info);
- if (&info->cmap)
- fb_dealloc_cmap(&info->cmap);
+ clk_put(fbi->clk);
+failed_check:
if (fbi->mach_info->teardown)
fbi->mach_info->teardown(pdev);
+failed_mode:
+ iounmap(fbi->mmio_base);
+failed_resource:
+ ep93xxfb_dealloc_videomem(info);
+failed_videomem:
+ fb_dealloc_cmap(&info->cmap);
+failed_cmap:
kfree(info);
platform_set_drvdata(pdev, NULL);
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