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slimbus: fix a potential NULL pointer dereference in of_qcom_slim_ngd_register

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[ Upstream commit 06d5d6b7f9 ]

In case platform_device_alloc fails, the fix returns an error
code to avoid the NULL pointer dereference.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Kangjie Lu 2019-04-13 11:34:47 +01:00 committed by Greg Kroah-Hartman
parent 0cbef22f67
commit 67d812fbe3
1 changed files with 4 additions and 0 deletions
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4
drivers/slimbus/qcom-ngd-ctrl.c
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@ -1331,6 +1331,10 @@ static int of_qcom_slim_ngd_register(struct device *parent,
return -ENOMEM;
ngd->pdev = platform_device_alloc(QCOM_SLIM_NGD_DRV_NAME, id);
if (!ngd->pdev) {
kfree(ngd);
return -ENOMEM;
}
ngd->id = id;
ngd->pdev->dev.parent = parent;
ngd->pdev->driver_override = QCOM_SLIM_NGD_DRV_NAME;