This is a note to let you know that I've just added the patch titled usb: cdns3: fix NULL pointer dereference on no platform data to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: usb-cdns3-fix-null-pointer-dereference-on-no-platfor.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 93073a4761da9d08ac6193b5cfb4b3e2723cea6d Author: Roger Quadros <rogerq@xxxxxx> Date: Mon Nov 23 12:49:31 2020 +0200 usb: cdns3: fix NULL pointer dereference on no platform data [ 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@xxxxxx> Signed-off-by: Roger Quadros <rogerq@xxxxxx> Acked-by: Pawel Laszczak <pawell@xxxxxxxxxxx> Signed-off-by: Peter Chen <peter.chen@xxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c index 29affbf1e828..6eeb7ed8e91f 100644 --- a/drivers/usb/cdns3/core.c +++ b/drivers/usb/cdns3/core.c @@ -569,7 +569,7 @@ static int cdns3_probe(struct platform_device *pdev) device_set_wakeup_capable(dev, true); pm_runtime_set_active(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); /* diff --git a/drivers/usb/cdns3/host.c b/drivers/usb/cdns3/host.c index c3b29a9c77a5..102977790d60 100644 --- a/drivers/usb/cdns3/host.c +++ b/drivers/usb/cdns3/host.c @@ -59,7 +59,7 @@ static int __cdns3_host_init(struct cdns3 *cdns) 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; ret = platform_device_add_data(xhci, cdns->xhci_plat_data,