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video: s3c-fb: Convert to devm style allocation 

Saves some code, especially useful as the code saved is mostly in the
infrequently tested error paths.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
This commit is contained in:
Mark Brown 2012-01-21 13:11:49 +00:00 committed by Florian Tobias Schandinat
parent f820917aba
commit 857a8df946
1 changed files with 5 additions and 27 deletions
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32
drivers/video/s3c-fb.c
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@ -186,7 +186,6 @@ struct s3c_fb_vsync {
* struct s3c_fb - overall hardware state of the hardware
* @slock: The spinlock protection for this data sturcture.
* @dev: The device that we bound to, for printing, etc.
* @regs_res: The resource we claimed for the IO registers.
* @bus_clk: The clk (hclk) feeding our interface and possibly pixclk.
* @lcd_clk: The clk (sclk) feeding pixclk.
* @regs: The mapped hardware registers.
@ -202,7 +201,6 @@ struct s3c_fb_vsync {
struct s3c_fb {
spinlock_t slock;
struct device *dev;
struct resource *regs_res;
struct clk *bus_clk;
struct clk *lcd_clk;
void __iomem *regs;
@ -1361,7 +1359,7 @@ static int __devinit s3c_fb_probe(struct platform_device *pdev)
return -EINVAL;
}
sfb = kzalloc(sizeof(struct s3c_fb), GFP_KERNEL);
sfb = devm_kzalloc(dev, sizeof(struct s3c_fb), GFP_KERNEL);
if (!sfb) {
dev_err(dev, "no memory for framebuffers\n");
return -ENOMEM;
@ -1404,33 +1402,25 @@ static int __devinit s3c_fb_probe(struct platform_device *pdev)
goto err_lcd_clk;
}
sfb->regs_res = request_mem_region(res->start, resource_size(res),
dev_name(dev));
if (!sfb->regs_res) {
dev_err(dev, "failed to claim register region\n");
ret = -ENOENT;
goto err_lcd_clk;
}
sfb->regs = ioremap(res->start, resource_size(res));
sfb->regs = devm_request_and_ioremap(dev, res);
if (!sfb->regs) {
dev_err(dev, "failed to map registers\n");
ret = -ENXIO;
goto err_req_region;
goto err_lcd_clk;
}
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res) {
dev_err(dev, "failed to acquire irq resource\n");
ret = -ENOENT;
goto err_ioremap;
goto err_lcd_clk;
}
sfb->irq_no = res->start;
ret = request_irq(sfb->irq_no, s3c_fb_irq,
0, "s3c_fb", sfb);
if (ret) {
dev_err(dev, "irq request failed\n");
goto err_ioremap;
goto err_lcd_clk;
}
dev_dbg(dev, "got resources (regs %p), probing windows\n", sfb->regs);
@ -1486,12 +1476,6 @@ err_pm_runtime:
pm_runtime_put_sync(sfb->dev);
free_irq(sfb->irq_no, sfb);
err_ioremap:
iounmap(sfb->regs);
err_req_region:
release_mem_region(sfb->regs_res->start, resource_size(sfb->regs_res));
err_lcd_clk:
pm_runtime_disable(sfb->dev);
@ -1505,7 +1489,6 @@ err_bus_clk:
clk_put(sfb->bus_clk);
err_sfb:
kfree(sfb);
return ret;
}
@ -1529,8 +1512,6 @@ static int __devexit s3c_fb_remove(struct platform_device *pdev)
free_irq(sfb->irq_no, sfb);
iounmap(sfb->regs);
if (!sfb->variant.has_clksel) {
clk_disable(sfb->lcd_clk);
clk_put(sfb->lcd_clk);
@ -1539,12 +1520,9 @@ static int __devexit s3c_fb_remove(struct platform_device *pdev)
clk_disable(sfb->bus_clk);
clk_put(sfb->bus_clk);
release_mem_region(sfb->regs_res->start, resource_size(sfb->regs_res));
pm_runtime_put_sync(sfb->dev);
pm_runtime_disable(sfb->dev);
kfree(sfb);
return 0;
}