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authorJulia Lawall <Julia.Lawall@lip6.fr>2013-08-14 11:11:25 +0200
committerThierry Reding <thierry.reding@gmail.com>2013-09-03 13:09:16 +0200
commit88d5a2e6ffaa32e2a09a994872ca10aca07a36e9 (patch)
tree05783d570a357d15464bc346b4f8458990cc73b6
parent382457e562bbb1ea7d94923e58fcbac9e981ff18 (diff)
downloadop-kernel-dev-88d5a2e6ffaa32e2a09a994872ca10aca07a36e9.zip
op-kernel-dev-88d5a2e6ffaa32e2a09a994872ca10aca07a36e9.tar.gz
pwm: 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> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
-rw-r--r--drivers/pwm/pwm-lpc32xx.c3
-rw-r--r--drivers/pwm/pwm-renesas-tpu.c5
-rw-r--r--drivers/pwm/pwm-spear.c7
3 files changed, 1 insertions, 14 deletions
diff --git a/drivers/pwm/pwm-lpc32xx.c b/drivers/pwm/pwm-lpc32xx.c
index efb6c7b..efac99e0 100644
--- a/drivers/pwm/pwm-lpc32xx.c
+++ b/drivers/pwm/pwm-lpc32xx.c
@@ -124,9 +124,6 @@ static int lpc32xx_pwm_probe(struct platform_device *pdev)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -EINVAL;
-
lpc32xx->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(lpc32xx->base))
return PTR_ERR(lpc32xx->base);
diff --git a/drivers/pwm/pwm-renesas-tpu.c b/drivers/pwm/pwm-renesas-tpu.c
index 3eeffff..aff6ba9 100644
--- a/drivers/pwm/pwm-renesas-tpu.c
+++ b/drivers/pwm/pwm-renesas-tpu.c
@@ -418,11 +418,6 @@ static int tpu_probe(struct platform_device *pdev)
/* Map memory, get clock and pin control. */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "failed to get I/O memory\n");
- return -ENXIO;
- }
-
tpu->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(tpu->base))
return PTR_ERR(tpu->base);
diff --git a/drivers/pwm/pwm-spear.c b/drivers/pwm/pwm-spear.c
index a54d214..8ad26b8 100644
--- a/drivers/pwm/pwm-spear.c
+++ b/drivers/pwm/pwm-spear.c
@@ -178,18 +178,13 @@ static int spear_pwm_probe(struct platform_device *pdev)
int ret;
u32 val;
- r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!r) {
- dev_err(&pdev->dev, "no memory resources defined\n");
- return -ENODEV;
- }
-
pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL);
if (!pc) {
dev_err(&pdev->dev, "failed to allocate memory\n");
return -ENOMEM;
}
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
pc->mmio_base = devm_ioremap_resource(&pdev->dev, r);
if (IS_ERR(pc->mmio_base))
return PTR_ERR(pc->mmio_base);
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