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ata: sata_mv:- Handle return value of devm_ioremap.
authorArvind Yadav <arvind.yadav.cs@gmail.com>
Mon, 12 Dec 2016 17:43:27 +0000 (23:13 +0530)
committerBen Hutchings <ben@decadent.org.uk>
Thu, 16 Mar 2017 02:18:39 +0000 (02:18 +0000)
commit 064c3db9c564cc5be514ac21fb4aa26cc33db746 upstream.

Here, If devm_ioremap will fail. It will return NULL.
Then hpriv->base = NULL - 0x20000; Kernel can run into
a NULL-pointer dereference. This error check will avoid
NULL pointer dereference.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

No differences found
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