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spi: pl022: Add missing error check for devm_kzalloc 

Currently this driver is missing a check on the return value of devm_kzalloc,
which would cause a NULL pointer dereference in a OOM situation.

This patch adds a missing check.

Signed-off-by: Kiran Padwal <kiran.padwal@smartplayin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kiran Padwal 2014-09-18 12:57:47 +05:30 committed by Mark Brown
parent 7d1311b93e
commit 73e3f1eb51
1 changed files with 5 additions and 0 deletions
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5
drivers/spi/spi-pl022.c
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@ -2100,6 +2100,10 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
pl022->vendor = id->data;
pl022->chipselects = devm_kzalloc(dev, num_cs * sizeof(int),
GFP_KERNEL);
if (!pl022->chipselects) {
status = -ENOMEM;
goto err_no_mem;
}
/*
* Bus Number Which has been Assigned to this SSP controller
@ -2241,6 +2245,7 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id)
amba_release_regions(adev);
err_no_ioregion:
err_no_gpio:
err_no_mem:
spi_master_put(master);
return status;
}