2013-03-11 07:38:30

by Silviu-Mihai Popescu

Subject: [PATCH] watchdog: convert to devm_ioremap_resource()

Convert all uses of devm_request_and_ioremap() to the newly introduced
devm_ioremap_resource() which provides more consistent error handling.

devm_ioremap_resource() provides its own error messages so all explicit
error messages can be removed from the failure code paths.

Signed-off-by: Silviu-Mihai Popescu <[email protected]>
---
drivers/watchdog/ath79_wdt.c | 8 +++-----
drivers/watchdog/davinci_wdt.c | 8 +++-----
drivers/watchdog/s3c2410_wdt.c | 9 +++------
3 files changed, 9 insertions(+), 16 deletions(-)

diff --git a/drivers/watchdog/ath79_wdt.c b/drivers/watchdog/ath79_wdt.c
index 8987990..d184c48 100644
--- a/drivers/watchdog/ath79_wdt.c
+++ b/drivers/watchdog/ath79_wdt.c
@@ -253,11 +253,9 @@ static int ath79_wdt_probe(struct platform_device *pdev)
return -EINVAL;
}

- wdt_base = devm_request_and_ioremap(&pdev->dev, res);
- if (!wdt_base) {
- dev_err(&pdev->dev, "unable to remap memory region\n");
- return -ENOMEM;
- }
+ wdt_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(wdt_base))
+ return PTR_ERR(wdt_base);

wdt_clk = devm_clk_get(&pdev->dev, "wdt");
if (IS_ERR(wdt_clk))
diff --git a/drivers/watchdog/davinci_wdt.c b/drivers/watchdog/davinci_wdt.c
index 7df1fdc..005fd71 100644
--- a/drivers/watchdog/davinci_wdt.c
+++ b/drivers/watchdog/davinci_wdt.c
@@ -221,11 +221,9 @@ static int davinci_wdt_probe(struct platform_device *pdev)
return -ENOENT;
}

- wdt_base = devm_request_and_ioremap(dev, wdt_mem);
- if (!wdt_base) {
- dev_err(dev, "ioremap failed\n");
- return -EADDRNOTAVAIL;
- }
+ wdt_base = devm_ioremap_resource(dev, wdt_mem);
+ if (IS_ERR(wdt_base))
+ return PTR_ERR(wdt_base);

ret = misc_register(&davinci_wdt_miscdev);
if (ret < 0) {
diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c
index c1a221c..393496c 100644
--- a/drivers/watchdog/s3c2410_wdt.c
+++ b/drivers/watchdog/s3c2410_wdt.c
@@ -330,12 +330,9 @@ static int s3c2410wdt_probe(struct platform_device *pdev)
}

/* get the memory region for the watchdog timer */
- wdt_base = devm_request_and_ioremap(dev, wdt_mem);
- if (wdt_base == NULL) {
- dev_err(dev, "failed to devm_request_and_ioremap() region\n");
- ret = -ENOMEM;
- goto err;
- }
+ wdt_base = devm_ioremap_resource(dev, wdt_mem);
+ if (IS_ERR(wdt_base))
+ return PTR_ERR(wdt_base);

DBG("probe: mapped wdt_base=%p\n", wdt_base);

--
1.7.9.5

2013-03-11 10:23:34

by Sachin Kamat

Subject: Re: [PATCH] watchdog: convert to devm_ioremap_resource()

Hi,

On 11 March 2013 13:08, Silviu-Mihai Popescu
<[email protected]> wrote:
> Convert all uses of devm_request_and_ioremap() to the newly introduced
> devm_ioremap_resource() which provides more consistent error handling.
>
> devm_ioremap_resource() provides its own error messages so all explicit
> error messages can be removed from the failure code paths.
>
> Signed-off-by: Silviu-Mihai Popescu <[email protected]>

I have already submitted a similar patchset to do this:
http://www.spinics.net/lists/linux-watchdog/msg02101.html


--
With warm regards,
Sachin