Re: [PATCH] fbdev: imxfb: Convert to devm_platform_ioremap_resource()

From: Helge Deller
Date: Mon Jul 10 2023 - 05:55:10 EST


On 7/10/23 09:41, Geert Uytterhoeven wrote:
Hi Yangtao,

On Mon, Jul 10, 2023 at 9:25 AM Yangtao Li <frank.li@xxxxxxxx> wrote:
On 2023/7/10 15:10, Geert Uytterhoeven wrote:
[你通常不会收到来自 geert@xxxxxxxxxxxxxx 的电子邮件。请访问 https://aka.ms/LearnAboutSenderIdentification,以了解这一点为什么很重要;]
On Tue, Jul 4, 2023 at 11:38 AM Yangtao Li <frank.li@xxxxxxxx> wrote:
Use devm_platform_ioremap_resource() to simplify code.

Signed-off-by: Yangtao Li <frank.li@xxxxxxxx>
Thanks for your patch, which is now commit c1cd7a7a231a26c6 ("fbdev:
imxfb: Convert to devm_platform_ioremap_resource()") in fbdev/for-next

--- a/drivers/video/fbdev/imxfb.c
+++ b/drivers/video/fbdev/imxfb.c
@@ -868,7 +868,6 @@ static int imxfb_probe(struct platform_device *pdev)
struct imxfb_info *fbi;
struct lcd_device *lcd;
struct fb_info *info;
- struct resource *res;
struct imx_fb_videomode *m;
const struct of_device_id *of_id;
struct device_node *display_np;
@@ -885,10 +884,6 @@ static int imxfb_probe(struct platform_device *pdev)
if (of_id)
pdev->id_entry = of_id->data;

- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENODEV;
-
info = framebuffer_alloc(sizeof(struct imxfb_info), &pdev->dev);
if (!info)
return -ENOMEM;
@@ -970,7 +965,7 @@ static int imxfb_probe(struct platform_device *pdev)
goto failed_getclock;
}

- fbi->regs = devm_ioremap_resource(&pdev->dev, res);
+ fbi->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(fbi->regs)) {
ret = PTR_ERR(fbi->regs);
goto failed_ioremap;
@@ -1043,7 +1038,6 @@ static int imxfb_probe(struct platform_device *pdev)
failed_map:
failed_ioremap:
failed_getclock:
- release_mem_region(res->start, resource_size(res));
This part is not directly related, but a bug fix for commit
b083c22d51148f3d ("video: fbdev: imxfb: Convert request_mem_region +
ioremap to devm_ioremap_resource") in v6.0.


IIUC, split this patch into two, remove release_mem_region in one and

mark it as Fixes: b083c22d51148f3d ("video: fbdev: imxfb: Convert
request_mem_region +

ioremap to devm_ioremap_resource")?

Exactly. But as Helge has already applied this patch to his tree, we have
to check with him if this is still feasible...

Sure. Just send them to the list and I apply those patches instead.

Thanks!
Helge