On 08/03/2012 03:40 PM, Damien Cassou wrote:
> From: Damien Cassou <[email protected]>
>
> 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.
>
> Signed-off-by: Damien Cassou <[email protected]>
Applied.
Thanks,
Florian Tobias Schandinat
>
> ---
> drivers/video/jz4740_fb.c | 22 ++++++----------------
> 1 file changed, 6 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/video/jz4740_fb.c b/drivers/video/jz4740_fb.c
> index de36693..7669770 100644
> --- a/drivers/video/jz4740_fb.c
> +++ b/drivers/video/jz4740_fb.c
> @@ -659,25 +659,25 @@ static int __devinit jzfb_probe(struct platform_device
> *pdev)
> jzfb->pdata = pdata;
> jzfb->mem = mem;
>
> - jzfb->ldclk = clk_get(&pdev->dev, "lcd");
> + jzfb->ldclk = devm_clk_get(&pdev->dev, "lcd");
> if (IS_ERR(jzfb->ldclk)) {
> ret = PTR_ERR(jzfb->ldclk);
> dev_err(&pdev->dev, "Failed to get lcd clock: %d\n", ret);
> goto err_framebuffer_release;
> }
>
> - jzfb->lpclk = clk_get(&pdev->dev, "lcd_pclk");
> + jzfb->lpclk = devm_clk_get(&pdev->dev, "lcd_pclk");
> if (IS_ERR(jzfb->lpclk)) {
> ret = PTR_ERR(jzfb->lpclk);
> dev_err(&pdev->dev, "Failed to get lcd pixel clock: %d\n", ret);
> - goto err_put_ldclk;
> + goto err_framebuffer_release;
> }
>
> - jzfb->base = ioremap(mem->start, resource_size(mem));
> + jzfb->base = devm_ioremap(&pdev->dev, mem->start, resource_size(mem));
> if (!jzfb->base) {
> dev_err(&pdev->dev, "Failed to ioremap register memory
> region\n");
> ret = -EBUSY;
> - goto err_put_lpclk;
> + goto err_framebuffer_release;
> }
>
> platform_set_drvdata(pdev, jzfb);
> @@ -693,7 +693,7 @@ static int __devinit jzfb_probe(struct platform_device
> *pdev)
> ret = jzfb_alloc_devmem(jzfb);
> if (ret) {
> dev_err(&pdev->dev, "Failed to allocate video memory\n");
> - goto err_iounmap;
> + goto err_framebuffer_release;
> }
>
> fb->fix = jzfb_fix;
> @@ -734,12 +734,6 @@ err_free_devmem:
>
> fb_dealloc_cmap(&fb->cmap);
> jzfb_free_devmem(jzfb);
> -err_iounmap:
> - iounmap(jzfb->base);
> -err_put_lpclk:
> - clk_put(jzfb->lpclk);
> -err_put_ldclk:
> - clk_put(jzfb->ldclk);
> err_framebuffer_release:
> framebuffer_release(fb);
> err_release_mem_region:
> @@ -756,7 +750,6 @@ static int __devexit jzfb_remove(struct platform_device
> *pdev)
> jz_gpio_bulk_free(jz_lcd_ctrl_pins, jzfb_num_ctrl_pins(jzfb));
> jz_gpio_bulk_free(jz_lcd_data_pins, jzfb_num_data_pins(jzfb));
>
> - iounmap(jzfb->base);
> release_mem_region(jzfb->mem->start, resource_size(jzfb->mem));
>
> fb_dealloc_cmap(&jzfb->fb->cmap);
> @@ -764,9 +757,6 @@ static int __devexit jzfb_remove(struct platform_device
> *pdev)
>
> platform_set_drvdata(pdev, NULL);
>
> - clk_put(jzfb->lpclk);
> - clk_put(jzfb->ldclk);
> -
> framebuffer_release(jzfb->fb);
>
> return 0;
>
--
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