tree 40910bda01f8c32a46acefbf8eccd17097362745
parent a119bf637f877f35bf89cffebfa482bbb7097eb5
author Nicholas Mc Guire <hofrat@osadl.org> 1543665438 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1550654310 +0100

gpio: pl061: handle failed allocations

[ Upstream commit df209c43a0e8258e096fb722dfbdae4f0dd13fde ]

devm_kzalloc(), devm_kstrdup() and devm_kasprintf() all can
fail internal allocation and return NULL. Using any of the assigned
objects without checking is not safe. As this is early in the boot
phase and these allocations really should not fail, any failure here
is probably an indication of a more serious issue so it makes little
sense to try and rollback the previous allocated resources or try to
continue;  but rather the probe function is simply exited with -ENOMEM.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Fixes: 684284b64aae ("ARM: integrator: add MMCI device to IM-PD1")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>