Commit f011636f authored by Dan Carpenter's avatar Dan Carpenter Committed by Kamal Mostafa

ata: ahci_xgene: dereferencing uninitialized pointer in probe

commit 8134233e upstream.

If the call to acpi_get_object_info() fails then "info" hasn't been
initialized.  In that situation, we already know that "version" should
be XGENE_AHCI_V1 so we don't actually need to dereference "info".

Fixes: c9802a4b ('ata: ahci_xgene: Add AHCI Support for 2nd HW version of APM X-Gene SoC AHCI SATA Host controller.')
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Signed-off-by: default avatarKamal Mostafa <kamal@canonical.com>
parent 86766cbb
......@@ -739,9 +739,9 @@ static int xgene_ahci_probe(struct platform_device *pdev)
dev_warn(&pdev->dev, "%s: Error reading device info. Assume version1\n",
__func__);
version = XGENE_AHCI_V1;
}
if (info->valid & ACPI_VALID_CID)
} else if (info->valid & ACPI_VALID_CID) {
version = XGENE_AHCI_V2;
}
}
}
#endif
......
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