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Subject[PATCH -next] mtd: nand: omap2: fix return value check in omap_nand_probe()
Date
From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

In case of error, the function dma_request_chan() returns ERR_PTR() and
never returns NULL. The NULL test in the return value check should be
replaced with IS_ERR().

Fixes: aa7abd312c11 ('mtd: nand: omap2: Support parsing dma channel
information from DT')
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
---
drivers/mtd/nand/omap2.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index a36ad3d..26fbe29 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -1922,9 +1922,9 @@ static int omap_nand_probe(struct platform_device *pdev)
dma_cap_set(DMA_SLAVE, mask);
info->dma = dma_request_chan(pdev->dev.parent, "rxtx");

- if (!info->dma) {
+ if (IS_ERR(info->dma)) {
dev_err(&pdev->dev, "DMA engine request failed\n");
- err = -ENXIO;
+ err = PTR_ERR(info->dma);
goto return_error;
} else {
struct dma_slave_config cfg;

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