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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2020-08-03 17:36:07 +0300 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzk@kernel.org> | 2020-10-26 12:09:30 +0300 |
| commit | 96999c797ec1ef41259f00b4ddf9cf33b342cb78 (patch) | |
| tree | 969dcd5bec81ee0a37012d511eacdf99a28d7d6d /drivers/memory/jz4780-nemc.c | |
| parent | 3650b228f83adda7e5ee532e2b90429c03f7b9ec (diff) | |
| download | linux-96999c797ec1ef41259f00b4ddf9cf33b342cb78.tar.xz | |
memory: jz4780_nemc: Fix an error pointer vs NULL check in probe()
The devm_ioremap() function returns NULL on error, it doesn't return
error pointers. This bug could lead to an Oops during probe.
Fixes: f046e4a3f0b9 ("memory: jz4780_nemc: Only request IO memory the driver will use")
Cc: <stable@vger.kernel.org>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20200803143607.GC346925@mwanda
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Diffstat (limited to 'drivers/memory/jz4780-nemc.c')
| -rw-r--r-- | drivers/memory/jz4780-nemc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/memory/jz4780-nemc.c b/drivers/memory/jz4780-nemc.c index 3ec5cb0fce1e..608ae925e641 100644 --- a/drivers/memory/jz4780-nemc.c +++ b/drivers/memory/jz4780-nemc.c @@ -304,9 +304,9 @@ static int jz4780_nemc_probe(struct platform_device *pdev) } nemc->base = devm_ioremap(dev, res->start, NEMC_REG_LEN); - if (IS_ERR(nemc->base)) { + if (!nemc->base) { dev_err(dev, "failed to get I/O memory\n"); - return PTR_ERR(nemc->base); + return -ENOMEM; } writel(0, nemc->base + NEMC_NFCSR); |