From 88d5a2e6ffaa32e2a09a994872ca10aca07a36e9 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Wed, 14 Aug 2013 11:11:25 +0200 Subject: [PATCH] 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/) // @@ 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); // Signed-off-by: Julia Lawall Acked-by: Viresh Kumar Signed-off-by: Thierry Reding --- drivers/pwm/pwm-lpc32xx.c | 3 --- drivers/pwm/pwm-renesas-tpu.c | 5 ----- drivers/pwm/pwm-spear.c | 7 +------ 3 files changed, 1 insertion(+), 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); -- 2.7.4