From: Wei Yongjun <weiyongjun1@huawei.com> To: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>, "Mauro Carvalho Chehab" <mchehab@kernel.org> Cc: Wei Yongjun <weiyongjun1@huawei.com>, <linux-media@vger.kernel.org>, <linux-renesas-soc@vger.kernel.org>, <kernel-janitors@vger.kernel.org> Subject: [PATCH -next] media: rcar_drif: fix error return code in rcar_drif_alloc_dmachannels() Date: Wed, 17 Jan 2018 11:24:52 +0000 [thread overview] Message-ID: <1516188292-144008-1-git-send-email-weiyongjun1@huawei.com> (raw) Fix to return error code -ENODEV from the dma_request_slave_channel() error handling case instead of 0, as done elsewhere in this function. rc can be overwrite to 0 by dmaengine_slave_config() in the for loop. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> --- drivers/media/platform/rcar_drif.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/rcar_drif.c b/drivers/media/platform/rcar_drif.c index b2e080e..dc7e280 100644 --- a/drivers/media/platform/rcar_drif.c +++ b/drivers/media/platform/rcar_drif.c @@ -274,7 +274,7 @@ static int rcar_drif_alloc_dmachannels(struct rcar_drif_sdr *sdr) { struct dma_slave_config dma_cfg; unsigned int i; - int ret = -ENODEV; + int ret; for_each_rcar_drif_channel(i, &sdr->cur_ch_mask) { struct rcar_drif *ch = sdr->ch[i]; @@ -282,6 +282,7 @@ static int rcar_drif_alloc_dmachannels(struct rcar_drif_sdr *sdr) ch->dmach = dma_request_slave_channel(&ch->pdev->dev, "rx"); if (!ch->dmach) { rdrif_err(sdr, "ch%u: dma channel req failed\n", i); + ret = -ENODEV; goto dmach_error; }
WARNING: multiple messages have this Message-ID (diff)
From: Wei Yongjun <weiyongjun1@huawei.com> To: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>, Mauro Carvalho Chehab <mchehab@kernel.org> Cc: Wei Yongjun <weiyongjun1@huawei.com>, linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH -next] media: rcar_drif: fix error return code in rcar_drif_alloc_dmachannels() Date: Wed, 17 Jan 2018 11:24:52 +0000 [thread overview] Message-ID: <1516188292-144008-1-git-send-email-weiyongjun1@huawei.com> (raw) Fix to return error code -ENODEV from the dma_request_slave_channel() error handling case instead of 0, as done elsewhere in this function. rc can be overwrite to 0 by dmaengine_slave_config() in the for loop. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> --- drivers/media/platform/rcar_drif.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/rcar_drif.c b/drivers/media/platform/rcar_drif.c index b2e080e..dc7e280 100644 --- a/drivers/media/platform/rcar_drif.c +++ b/drivers/media/platform/rcar_drif.c @@ -274,7 +274,7 @@ static int rcar_drif_alloc_dmachannels(struct rcar_drif_sdr *sdr) { struct dma_slave_config dma_cfg; unsigned int i; - int ret = -ENODEV; + int ret; for_each_rcar_drif_channel(i, &sdr->cur_ch_mask) { struct rcar_drif *ch = sdr->ch[i]; @@ -282,6 +282,7 @@ static int rcar_drif_alloc_dmachannels(struct rcar_drif_sdr *sdr) ch->dmach = dma_request_slave_channel(&ch->pdev->dev, "rx"); if (!ch->dmach) { rdrif_err(sdr, "ch%u: dma channel req failed\n", i); + ret = -ENODEV; goto dmach_error; }
next reply other threads:[~2018-01-17 11:18 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-01-17 11:24 Wei Yongjun [this message] 2018-01-17 11:24 ` [PATCH -next] media: rcar_drif: fix error return code in rcar_drif_alloc_dmachannels() Wei Yongjun 2018-01-17 11:36 ` Sergei Shtylyov 2018-01-17 11:36 ` Sergei Shtylyov 2018-01-17 12:58 ` Geert Uytterhoeven 2018-01-17 12:58 ` Geert Uytterhoeven 2018-01-17 13:46 ` Ramesh Shanmugasundaram
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