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spmi: pmic-arb: fix a possible null pointer dereference 

If "core" memory resource is not specified, then the driver could
end up dereferencing a null pointer. Fix this issue.

Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Kiran Gunda 2017-07-28 12:40:45 +05:30 committed by Greg Kroah-Hartman
parent e95d073c8c
commit 000e1a43d3
1 changed files with 2 additions and 2 deletions
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4
drivers/spmi/spmi-pmic-arb.c
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@ -955,14 +955,14 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
pmic_arb->spmic = ctrl;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "core");
pmic_arb->core_size = resource_size(res);
core = devm_ioremap_resource(&ctrl->dev, res);
if (IS_ERR(core)) {
err = PTR_ERR(core);
goto err_put_ctrl;
}
pmic_arb->core_size = resource_size(res);
pmic_arb->ppid_to_apid = devm_kcalloc(&ctrl->dev, PMIC_ARB_MAX_PPID,
sizeof(*pmic_arb->ppid_to_apid),
GFP_KERNEL);