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Commit 8bed9055 authored by Guennadi Liakhovetski's avatar Guennadi Liakhovetski Committed by Paul Mundt
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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: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 83515bc7

drivers/video/sh_mobile_lcdcfb.c

+13 −14
Original line number Diff line number Diff line
@@ -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;

			}
@@ -1128,7 +1126,7 @@ static int __devinit sh_mobile_lcdc_probe(struct platform_device *pdev) 
	return 0;

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);
@@ -1162,6 +1160,7 @@ static int sh_mobile_lcdc_remove(struct platform_device *pdev) 
	if (priv->dot_clk)

		clk_put(priv->dot_clk);



	if (priv->dev)

		pm_runtime_disable(priv->dev);



	if (priv->base)