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| author | Vladimir Zapolskiy <vz@mleia.com> | 2016-03-06 03:21:35 +0200 |
|---|---|---|
| committer | Stephen Boyd <sboyd@codeaurora.org> | 2016-03-15 18:14:11 -0700 |
| commit | 4d3ac6662452060721599a3392bc2f524af984cb (patch) | |
| tree | ce96ba06e0e2ecc0522bea8e6d9a9ccdb92a5772 /drivers/clk/bcm | |
| parent | e8087b5b90b2aa0a307e57e1a209a91d60da268b (diff) | |
| download | linux-4d3ac6662452060721599a3392bc2f524af984cb.tar.bz2 | |
clk: bcm2835: fix check of error code returned by devm_ioremap_resource()
The change fixes potential oops while accessing iomem on invalid
address, if devm_ioremap_resource() fails due to some reason.
The devm_ioremap_resource() function returns ERR_PTR() and never
returns NULL, which makes useless a following check for NULL.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Fixes: 5e63dcc74b30 ("clk: bcm2835: Add a driver for the auxiliary peripheral clock gates")
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Diffstat (limited to 'drivers/clk/bcm')
| -rw-r--r-- | drivers/clk/bcm/clk-bcm2835-aux.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/clk/bcm/clk-bcm2835-aux.c b/drivers/clk/bcm/clk-bcm2835-aux.c index e4f89e28b5ec..3a177ade6e6c 100644 --- a/drivers/clk/bcm/clk-bcm2835-aux.c +++ b/drivers/clk/bcm/clk-bcm2835-aux.c @@ -38,8 +38,8 @@ static int bcm2835_aux_clk_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_MEM, 0); reg = devm_ioremap_resource(dev, res); - if (!reg) - return -ENODEV; + if (IS_ERR(reg)) + return PTR_ERR(reg); onecell = devm_kmalloc(dev, sizeof(*onecell), GFP_KERNEL); if (!onecell) |