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authorJulia Lawall <Julia.Lawall@lip6.fr>2013-08-14 11:11:21 +0200
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>2015-06-25 01:13:40 +0200
commite044253b3b4fb5a8b275202511a4d9765ac0a982 (patch)
tree9e78c4ac9b33cbf7ade90a34bc3b26de011e8a75 /drivers/rtc
parent538330ccb93849530f5617d1fa870237496caa60 (diff)
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.c4
-rw-r--r--drivers/rtc/rtc-ds1286.c4
-rw-r--r--drivers/rtc/rtc-spear.c7
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);