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sh: fix a number of Oopses and leaks in SH framebuffer driver 

Fix a number of Oopses, memory leaks and unbalanced calls on error paths in
sh_mobile_lcdcfb.c.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Guennadi Liakhovetski 2010-04-30 16:07:00 +00:00 committed by Paul Mundt
parent 83515bc7df
commit 8bed90557d
1 changed files with 13 additions and 14 deletions
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27
drivers/video/sh_mobile_lcdcfb.c
View File

@ -695,6 +695,7 @@ static int sh_mobile_lcdc_setup_clocks(struct platform_device *pdev,
* 1) Enable Runtime PM
* 2) Force Runtime PM Resume since hardware is accessed from probe()
*/
priv->dev = &pdev->dev;
pm_runtime_enable(priv->dev);
pm_runtime_resume(priv->dev);
return 0;
@ -957,25 +958,24 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
if (!pdev->dev.platform_data) {
dev_err(&pdev->dev, "no platform data defined\n");
error = -EINVAL;
goto err0;
return -EINVAL;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
i = platform_get_irq(pdev, 0);
if (!res || i < 0) {
dev_err(&pdev->dev, "cannot get platform resources\n");
error = -ENOENT;
goto err0;
return -ENOENT;
}
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv) {
dev_err(&pdev->dev, "cannot allocate device data\n");
error = -ENOMEM;
goto err0;
return -ENOMEM;
}
platform_set_drvdata(pdev, priv);
error = request_irq(i, sh_mobile_lcdc_irq, IRQF_DISABLED,
dev_name(&pdev->dev), priv);
if (error) {
@ -984,8 +984,6 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
}
priv->irq = i;
priv->dev = &pdev->dev;
platform_set_drvdata(pdev, priv);
pdata = pdev->dev.platform_data;
j = 0;
@ -1099,9 +1097,9 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
info = ch->info;
if (info->fbdefio) {
priv->ch->sglist = vmalloc(sizeof(struct scatterlist) *
ch->sglist = vmalloc(sizeof(struct scatterlist) *
info->fix.smem_len >> PAGE_SHIFT);
if (!priv->ch->sglist) {
if (!ch->sglist) {
dev_err(&pdev->dev, "cannot allocate sglist\n");
goto err1;
}
@ -1126,9 +1124,9 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev)
}
return 0;
err1:
err1:
sh_mobile_lcdc_remove(pdev);
err0:
return error;
}
@ -1139,7 +1137,7 @@ static int sh_mobile_lcdc_remove(struct platform_device *pdev)
int i;
for (i = 0; i < ARRAY_SIZE(priv->ch); i++)
if (priv->ch[i].info->dev)
if (priv->ch[i].info && priv->ch[i].info->dev)
unregister_framebuffer(priv->ch[i].info);
sh_mobile_lcdc_stop(priv);
@ -1162,7 +1160,8 @@ static int sh_mobile_lcdc_remove(struct platform_device *pdev)
if (priv->dot_clk)
clk_put(priv->dot_clk);
pm_runtime_disable(priv->dev);
if (priv->dev)
pm_runtime_disable(priv->dev);
if (priv->base)
iounmap(priv->base);