From: Miaoqian Lin <linmq006@gmail.com>
To: Vinod Koul <vkoul@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
Zidan Wang <zidan.wang@freescale.com>,
dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: linmq006@gmail.com
Subject: [PATCH] dmaengine: imx-sdma: Fix error checking in sdma_event_remap
Date: Tue, 8 Mar 2022 06:49:51 +0000 [thread overview]
Message-ID: <20220308064952.15743-1-linmq006@gmail.com> (raw)
of_parse_phandle() returns NULL on errors, rather than error
pointers. Using NULL check on grp_np to fix this.
Fixes: d078cd1b4185 ("dmaengine: imx-sdma: Add imx6sx platform support")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
---
drivers/dma/imx-sdma.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 75ec0754d4ad..0be1171610af 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1869,7 +1869,7 @@ static int sdma_event_remap(struct sdma_engine *sdma)
u32 reg, val, shift, num_map, i;
int ret = 0;
- if (IS_ERR(np) || IS_ERR(gpr_np))
+ if (IS_ERR(np) || !gpr_np)
goto out;
event_remap = of_find_property(np, propname, NULL);
@@ -1917,7 +1917,7 @@ static int sdma_event_remap(struct sdma_engine *sdma)
}
out:
- if (!IS_ERR(gpr_np))
+ if (gpr_np)
of_node_put(gpr_np);
return ret;
--
2.17.1
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next reply other threads:[~2022-03-08 6:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-08 6:49 Miaoqian Lin [this message]
2022-04-11 14:18 ` [PATCH] dmaengine: imx-sdma: Fix error checking in sdma_event_remap Vinod Koul
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