Felipe, On 7/15/2015 2:56 PM, Murali Karicheri wrote:
On 07/02/2015 06:34 PM, Felipe Balbi wrote:commit 3e10a2ce98d1 ("usb: dwc3: add hsphy_interface property") introduced a possible NULL pointer dereference because dwc->hsphy_interface can be NULL.In order to fix it, all we have to do is guard strncmp() against a NULL argument. Fixes: 3e10a2ce98d1 ("usb: dwc3: add hsphy_interface property") Tested-by: Murali Karicheri <m-kariche...@ti.com> Signed-off-by: Felipe Balbi <ba...@ti.com> --- drivers/usb/dwc3/core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 5c110d8e293b..ff5773c66b84 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -446,10 +446,12 @@ static int dwc3_phy_setup(struct dwc3 *dwc) /* Select the HS PHY interface */ switch (DWC3_GHWPARAMS3_HSPHY_IFC(dwc->hwparams.hwparams3)) { case DWC3_GHWPARAMS3_HSPHY_IFC_UTMI_ULPI: - if (!strncmp(dwc->hsphy_interface, "utmi", 4)) { + if (dwc->hsphy_interface && + !strncmp(dwc->hsphy_interface, "utmi", 4)) { reg &= ~DWC3_GUSB2PHYCFG_ULPI_UTMI; break; - } else if (!strncmp(dwc->hsphy_interface, "ulpi", 4)) { + } else if (dwc->hsphy_interface && + !strncmp(dwc->hsphy_interface, "ulpi", 4)) { reg |= DWC3_GUSB2PHYCFG_ULPI_UTMI; dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); } else {Dear Maintainer, This is patch is urgently required to be applied to master for v4.2 for fixing a crash seen on keystone based boards (K2HK, K2L and K2E EVMs). Please merge it asap.
I assume you are you sending this one for rc's ? Feel free to use my ack if you need one. Acked-by: Santosh Shilimkar <ssant...@kernel.org> -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
