From: Julia Lawall <julia@xxxxxxx> Add a new variable for storing resources accessed subsequent to the one accessed using request_mem_region, so the one accessed using request_mem_region can be released if needed. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ expression E, E1; identifier f; statement S1,S2,S3; @@ if (E == NULL) { ... when != if (E == NULL || ...) S1 else S2 when != E = E1 *E->f ... when any return ...; } else S3 // </smpl> Signed-off-by: Julia Lawall <julia@xxxxxxx> --- Not even compile tested. sound/soc/mxs/mxs-saif.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/sound/soc/mxs/mxs-saif.c b/sound/soc/mxs/mxs-saif.c index 401944c..76dc74d 100644 --- a/sound/soc/mxs/mxs-saif.c +++ b/sound/soc/mxs/mxs-saif.c @@ -617,7 +617,7 @@ static irqreturn_t mxs_saif_irq(int irq, void *dev_id) static int mxs_saif_probe(struct platform_device *pdev) { - struct resource *res; + struct resource *iores, *dmares; struct mxs_saif *saif; struct mxs_saif_platform_data *pdata; int ret = 0; @@ -655,35 +655,36 @@ static int mxs_saif_probe(struct platform_device *pdev) goto failed_clk; } - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { + iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!iores) { ret = -ENODEV; dev_err(&pdev->dev, "failed to get io resource: %d\n", ret); goto failed_get_resource; } - if (!request_mem_region(res->start, resource_size(res), "mxs-saif")) { + if (!request_mem_region(iores->start, resource_size(iores), + "mxs-saif")) { dev_err(&pdev->dev, "request_mem_region failed\n"); ret = -EBUSY; goto failed_get_resource; } - saif->base = ioremap(res->start, resource_size(res)); + saif->base = ioremap(iores->start, resource_size(iores)); if (!saif->base) { dev_err(&pdev->dev, "ioremap failed\n"); ret = -ENODEV; goto failed_ioremap; } - res = platform_get_resource(pdev, IORESOURCE_DMA, 0); - if (!res) { + dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0); + if (!dmares) { ret = -ENODEV; dev_err(&pdev->dev, "failed to get dma resource: %d\n", ret); goto failed_ioremap; } - saif->dma_param.chan_num = res->start; + saif->dma_param.chan_num = dmares->start; saif->irq = platform_get_irq(pdev, 0); if (saif->irq < 0) { @@ -742,7 +743,7 @@ failed_get_irq2: failed_get_irq1: iounmap(saif->base); failed_ioremap: - release_mem_region(res->start, resource_size(res)); + release_mem_region(iores->start, resource_size(iores)); failed_get_resource: clk_put(saif->clk); failed_clk: -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
