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Date: Fri, 31 May 2013 09:50:07 +0800 From: Wei Yongjun <weiyj.lk@...il.com> To: srinidhi.kasagar@...ricsson.com, linus.walleij@...aro.org, djbw@...com, vinod.koul@...el.com, grant.likely@...aro.org, rob.herring@...xeda.com, andy.shevchenko@...il.com Cc: yongjun_wei@...ndmicro.com.cn, linux-arm-kernel@...ts.infradead.org, devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org Subject: [PATCH -next v3] dmaengine: ste_dma40: fix error return code in d40_probe() From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn> In many of the error handling case, the return value 'ret' not set and 0 will be return from d40_probe() even if error, but we should return a negative error code instead in those error handling case. This patch fixed them, and also removed useless variable 'err'. Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn> --- v2 -> v3: move NULL assign below set ret, and remove redundant ENODEV check. --- drivers/dma/ste_dma40.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 7f23d45..88e3cd4 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -3506,7 +3506,6 @@ static int __init d40_probe(struct platform_device *pdev) { struct stedma40_platform_data *plat_data = pdev->dev.platform_data; struct device_node *np = pdev->dev.of_node; - int err; int ret = -ENOENT; struct d40_base *base = NULL; struct resource *res = NULL; @@ -3618,6 +3617,7 @@ static int __init d40_probe(struct platform_device *pdev) base->lcpa_regulator = regulator_get(base->dev, "lcla_esram"); if (IS_ERR(base->lcpa_regulator)) { d40_err(&pdev->dev, "Failed to get lcpa_regulator\n"); + ret = PTR_ERR(base->lcpa_regulator); base->lcpa_regulator = NULL; goto failure; } @@ -3633,13 +3633,13 @@ static int __init d40_probe(struct platform_device *pdev) } base->initialized = true; - err = d40_dmaengine_init(base, num_reserved_chans); - if (err) + ret = d40_dmaengine_init(base, num_reserved_chans); + if (ret) goto failure; base->dev->dma_parms = &base->dma_parms; - err = dma_set_max_seg_size(base->dev, STEDMA40_MAX_SEG_SIZE); - if (err) { + ret = dma_set_max_seg_size(base->dev, STEDMA40_MAX_SEG_SIZE); + if (ret) { d40_err(&pdev->dev, "Failed to set dma max seg size\n"); goto failure; } @@ -3647,8 +3647,8 @@ static int __init d40_probe(struct platform_device *pdev) d40_hw_init(base); if (np) { - err = of_dma_controller_register(np, d40_xlate, NULL); - if (err && err != -ENODEV) + ret = of_dma_controller_register(np, d40_xlate, NULL); + if (ret) dev_err(&pdev->dev, "could not register of_dma_controller\n"); } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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