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| author | Julia Lawall <Julia.Lawall@lip6.fr> | 2013-08-14 11:11:21 +0200 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2015-06-25 01:13:40 +0200 |
| commit | e044253b3b4fb5a8b275202511a4d9765ac0a982 (patch) | |
| tree | 9e78c4ac9b33cbf7ade90a34bc3b26de011e8a75 /drivers/rtc | |
| parent | rtc: pcf8563 fix: return -EINVAL if we read an invalid time. (diff) | |
| download | linux-e044253b3b4fb5a8b275202511a4d9765ac0a982.tar.xz linux-e044253b3b4fb5a8b275202511a4d9765ac0a982.zip | |
rtc: simplify use of devm_ioremap_resource
Remove unneeded error handling on the result of a call to
platform_get_resource when the value is passed to devm_ioremap_resource.
Move the call to platform_get_resource adjacent to the call to
devm_ioremap_resource to make the connection between them more clear.
A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression pdev,res,n,e,e1;
expression ret != 0;
identifier l;
@@
- res = platform_get_resource(pdev, IORESOURCE_MEM, n);
... when != res
- if (res == NULL) { ... \(goto l;\|return ret;\) }
... when != res
+ res = platform_get_resource(pdev, IORESOURCE_MEM, n);
e = devm_ioremap_resource(e1, res);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
[viresh.kumar@linaro.org: acked rtc-spear]
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-ds1216.c | 4 | ||||
| -rw-r--r-- | drivers/rtc/rtc-ds1286.c | 4 | ||||
| -rw-r--r-- | drivers/rtc/rtc-spear.c | 7 |
3 files changed, 3 insertions, 12 deletions
diff --git a/drivers/rtc/rtc-ds1216.c b/drivers/rtc/rtc-ds1216.c index d16f550897b8..12dbd70859ae 100644 --- a/drivers/rtc/rtc-ds1216.c +++ b/drivers/rtc/rtc-ds1216.c @@ -144,15 +144,13 @@ static int __init ds1216_rtc_probe(struct platform_device *pdev) struct ds1216_priv *priv; u8 dummy[8]; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -ENODEV; priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; platform_set_drvdata(pdev, priv); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); priv->ioaddr = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(priv->ioaddr)) return PTR_ERR(priv->ioaddr); diff --git a/drivers/rtc/rtc-ds1286.c b/drivers/rtc/rtc-ds1286.c index 2fe537f4e2bd..8247a29a4eb4 100644 --- a/drivers/rtc/rtc-ds1286.c +++ b/drivers/rtc/rtc-ds1286.c @@ -332,13 +332,11 @@ static int ds1286_probe(struct platform_device *pdev) struct resource *res; struct ds1286_priv *priv; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -ENODEV; priv = devm_kzalloc(&pdev->dev, sizeof(struct ds1286_priv), GFP_KERNEL); if (!priv) return -ENOMEM; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); priv->rtcregs = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(priv->rtcregs)) return PTR_ERR(priv->rtcregs); diff --git a/drivers/rtc/rtc-spear.c b/drivers/rtc/rtc-spear.c index d2cdb9823a15..f05ef8568480 100644 --- a/drivers/rtc/rtc-spear.c +++ b/drivers/rtc/rtc-spear.c @@ -358,12 +358,6 @@ static int spear_rtc_probe(struct platform_device *pdev) int status = 0; int irq; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "no resource defined\n"); - return -EBUSY; - } - config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL); if (!config) return -ENOMEM; @@ -383,6 +377,7 @@ static int spear_rtc_probe(struct platform_device *pdev) return status; } + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); config->ioaddr = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(config->ioaddr)) return PTR_ERR(config->ioaddr); |