| Message ID | 20201123104931.2653-1-rogerq@ti.com |
|---|---|
| State | New |
| Headers | show |
| Series | usb: cdns3: fix NULL pointer dereference on no platform data | expand |
On 20-11-23 12:49:31, Roger Quadros wrote: > 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: a284b7fd1b8f ("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> > --- > drivers/usb/cdns3/core.c | 2 +- > drivers/usb/cdns3/host.c | 2 +- > 2 files changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c > index 54d841aa626f..0f08aebce86d 100644 > --- a/drivers/usb/cdns3/core.c > +++ b/drivers/usb/cdns3/core.c > @@ -559,7 +559,7 @@ 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 08103785a17a..ec89f2e5430f 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, Thanks for fixing it, already applied to -next tree. -- Thanks, Peter Chen
diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c index 54d841aa626f..0f08aebce86d 100644 --- a/drivers/usb/cdns3/core.c +++ b/drivers/usb/cdns3/core.c @@ -559,7 +559,7 @@ 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 08103785a17a..ec89f2e5430f 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,
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: a284b7fd1b8f ("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> --- drivers/usb/cdns3/core.c | 2 +- drivers/usb/cdns3/host.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)