From 640ba2444fa95261f23a2b86e69aabe723332bed Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sat, 18 Feb 2012 19:19:29 +0100 Subject: [PATCH] drivers/video/pxa168fb.c: use devm_ functions The various devm_ functions allocate memory that is released when a driver detaches. This patch uses these functions for data that is allocated in the probe function of a platform device and is only freed in the remove function. By using devm_ioremap, it also removes a potential memory leak, because there was no call to iounmap in the probe function. Signed-off-by: Julia Lawall Signed-off-by: Florian Tobias Schandinat --- drivers/video/pxa168fb.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/drivers/video/pxa168fb.c b/drivers/video/pxa168fb.c index 8384b941f6ba..f146089261f4 100644 --- a/drivers/video/pxa168fb.c +++ b/drivers/video/pxa168fb.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -670,7 +671,8 @@ static int __devinit pxa168fb_probe(struct platform_device *pdev) /* * Map LCD controller registers. */ - fbi->reg_base = ioremap_nocache(res->start, resource_size(res)); + fbi->reg_base = devm_ioremap_nocache(&pdev->dev, res->start, + resource_size(res)); if (fbi->reg_base == NULL) { ret = -ENOMEM; goto failed_free_info; @@ -739,8 +741,8 @@ static int __devinit pxa168fb_probe(struct platform_device *pdev) /* * Register irq handler. */ - ret = request_irq(irq, pxa168fb_handle_irq, IRQF_SHARED, - info->fix.id, fbi); + ret = devm_request_irq(&pdev->dev, irq, pxa168fb_handle_irq, + IRQF_SHARED, info->fix.id, fbi); if (ret < 0) { dev_err(&pdev->dev, "unable to request IRQ\n"); ret = -ENXIO; @@ -759,14 +761,12 @@ static int __devinit pxa168fb_probe(struct platform_device *pdev) if (ret < 0) { dev_err(&pdev->dev, "Failed to register pxa168-fb: %d\n", ret); ret = -ENXIO; - goto failed_free_irq; + goto failed_free_cmap; } platform_set_drvdata(pdev, fbi); return 0; -failed_free_irq: - free_irq(irq, fbi); failed_free_cmap: fb_dealloc_cmap(&info->cmap); failed_free_clk: @@ -808,13 +808,10 @@ static int __devexit pxa168fb_remove(struct platform_device *pdev) fb_dealloc_cmap(&info->cmap); irq = platform_get_irq(pdev, 0); - free_irq(irq, fbi); dma_free_writecombine(fbi->dev, PAGE_ALIGN(info->fix.smem_len), info->screen_base, info->fix.smem_start); - iounmap(fbi->reg_base); - clk_disable(fbi->clk); clk_put(fbi->clk);