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authorVladimir Zapolskiy <vz@mleia.com>2016-03-23 04:52:45 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-04-30 14:15:56 -0700
commitd449d69d216854a8cab049fe035ffefbf383a2e1 (patch)
treefd01a23fe64c363f34753c5e5cd8ad5ad68c8ff8 /drivers/misc/sram.c
parent47f55b74cfb28cbd3328ffd5c4c0f7a14da36498 (diff)
downloadlinux-d449d69d216854a8cab049fe035ffefbf383a2e1.tar.bz2
misc: sram: fix check of devm_ioremap*() return value
Both devm_ioremap() and devm_ioremap_wc() functions return either a pointer to valid iomem region or NULL, check for IS_ERR() is improper and may result in oops on error path. Now on error -ENOMEM is returned. Fixes: 0ab163ad1ea0 ("misc: sram: switch to ioremap_wc from ioremap") Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/sram.c')
-rw-r--r--drivers/misc/sram.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/misc/sram.c b/drivers/misc/sram.c
index 69cdabea9c03..f84b53d6ce50 100644
--- a/drivers/misc/sram.c
+++ b/drivers/misc/sram.c
@@ -364,8 +364,8 @@ static int sram_probe(struct platform_device *pdev)
sram->virt_base = devm_ioremap(sram->dev, res->start, size);
else
sram->virt_base = devm_ioremap_wc(sram->dev, res->start, size);
- if (IS_ERR(sram->virt_base))
- return PTR_ERR(sram->virt_base);
+ if (!sram->virt_base)
+ return -ENOMEM;
sram->pool = devm_gen_pool_create(sram->dev, ilog2(SRAM_GRANULARITY),
NUMA_NO_NODE, NULL);