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| author | Julia Lawall <Julia.Lawall@lip6.fr> | 2013-08-14 11:11:25 +0200 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2013-09-03 13:09:16 +0200 |
| commit | 88d5a2e6ffaa32e2a09a994872ca10aca07a36e9 (patch) | |
| tree | 05783d570a357d15464bc346b4f8458990cc73b6 | |
| parent | 382457e562bbb1ea7d94923e58fcbac9e981ff18 (diff) | |
| download | linux-stable-88d5a2e6ffaa32e2a09a994872ca10aca07a36e9.tar.gz linux-stable-88d5a2e6ffaa32e2a09a994872ca10aca07a36e9.tar.bz2 linux-stable-88d5a2e6ffaa32e2a09a994872ca10aca07a36e9.zip | |
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.c | 3 | ||||
| -rw-r--r-- | drivers/pwm/pwm-renesas-tpu.c | 5 | ||||
| -rw-r--r-- | drivers/pwm/pwm-spear.c | 7 |
3 files changed, 1 insertions, 14 deletions
diff --git a/drivers/pwm/pwm-lpc32xx.c b/drivers/pwm/pwm-lpc32xx.c index efb6c7bf8750..efac99e03d57 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 3eeffff69280..aff6ba9b49e7 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 a54d21401431..8ad26b8bf418 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); |