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usb: cdns3: fix NULL pointer dereference on no platform data

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[ Upstream commit 448373d9db1a7000072f65103af19e20503f0c0c ]

Some platforms (e.g. TI) will not have any platform data which will
lead to NULL pointer dereference if we don't check for NULL pdata.

Fixes: 7cea9657756b ("usb: cdns3: add quirk for enable runtime pm by default")
Reported-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Acked-by: Pawel Laszczak <pawell@cadence.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Roger Quadros 2020-11-23 12:49:31 +02:00 committed by Greg Kroah-Hartman
parent 8694c4e2b1
commit 0ff1f97510
2 changed files with 2 additions and 2 deletions
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2
drivers/usb/cdns3/core.c
View File

@ -569,7 +569,7 @@ static int cdns3_probe(struct platform_device *pdev)
device_set_wakeup_capable(dev, true); device_set_wakeup_capable(dev, true);
pm_runtime_set_active(dev); pm_runtime_set_active(dev);
pm_runtime_enable(dev); pm_runtime_enable(dev);
if (!(cdns->pdata->quirks & CDNS3_DEFAULT_PM_RUNTIME_ALLOW)) if (!(cdns->pdata && (cdns->pdata->quirks & CDNS3_DEFAULT_PM_RUNTIME_ALLOW)))
pm_runtime_forbid(dev); pm_runtime_forbid(dev);
/* /*

2
drivers/usb/cdns3/host.c
View File

@ -59,7 +59,7 @@ static int __cdns3_host_init(struct cdns3 *cdns)
goto err1; goto err1;
} }
if (cdns->pdata->quirks & CDNS3_DEFAULT_PM_RUNTIME_ALLOW) if (cdns->pdata && (cdns->pdata->quirks & CDNS3_DEFAULT_PM_RUNTIME_ALLOW))
cdns->xhci_plat_data->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW; cdns->xhci_plat_data->quirks |= XHCI_DEFAULT_PM_RUNTIME_ALLOW;
ret = platform_device_add_data(xhci, cdns->xhci_plat_data, ret = platform_device_add_data(xhci, cdns->xhci_plat_data,