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: NNicholas Mc Guire <hofrat@osadl.org> Fixes: 684284b6 ("ARM: integrator: add MMCI device to IM-PD1") Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NSasha Levin <sashal@kernel.org>
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