From: Damien Cassou <damien.cas...@lifl.fr>
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 <damien.cas...@lifl.fr>
---
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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