usb: host: xhci-plat: Make enum xhci_plat_type start at a non zero value

petegriffin · gregkh · commit f9a85f6e61c6 · 2016-04-13T11:58:02.000-07:00
Otherwise generic-xhci and xhci-platform which have no data get wrongly detected as XHCI_PLAT_TYPE_MARVELL_ARMADA by xhci_plat_type_is(). This fixes a regression in v4.5 for STiH407 family SoC's which use the synopsis dwc3 IP, whereby the disable_clk error path gets taken due to wrongly being detected as XHCI_PLAT_TYPE_MARVELL_ARMADA and the hcd never gets added. I suspect this will also fix other dwc3 DT platforms such as Exynos, although I've only tested on STih410 SoC. Fixes: 4efb2f6 ("usb: host: xhci-plat: add struct xhci_plat_priv") Cc: stable@vger.kernel.org Cc: gregory.clement@free-electrons.com Cc: yoshihiro.shimoda.uh@renesas.com Signed-off-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/host/xhci-plat.h b/drivers/usb/host/xhci-plat.h
@@ -14,7 +14,7 @@
 #include "xhci.h"	/* for hcd_to_xhci() */
 
 enum xhci_plat_type {
-	XHCI_PLAT_TYPE_MARVELL_ARMADA,
+	XHCI_PLAT_TYPE_MARVELL_ARMADA = 1,
 	XHCI_PLAT_TYPE_RENESAS_RCAR_GEN2,
 	XHCI_PLAT_TYPE_RENESAS_RCAR_GEN3,
 };
