Yoshihiro Shimoda <[email protected]> writes: > If kernel configuration is CONFIG_USB_XHCI_PLATFORM=y and > CONFIG_USB_XHCI_RCAR is not set, R-Car Gen2/3 will cause long wait > in xhci_reset() because such SoCs need specific initialization.
where is the delay coming from exactly ? > So, this patch modifies the xhci_rcar_init_quirk() in xhci-rcar.h > to exit the probe function immediately. > > Fixes: 4ac8918f3a7 (usb: host: xhci-plat: add support for the R-Car H2 and M2 > xHCI controllers) > Cc: <[email protected]> # v3.17+ > Signed-off-by: Yoshihiro Shimoda <[email protected]> > --- > drivers/usb/host/xhci-rcar.h | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/usb/host/xhci-rcar.h b/drivers/usb/host/xhci-rcar.h > index 2941a25..2afed68 100644 > --- a/drivers/usb/host/xhci-rcar.h > +++ b/drivers/usb/host/xhci-rcar.h > @@ -24,7 +24,11 @@ static inline void xhci_rcar_start(struct usb_hcd *hcd) > > static inline int xhci_rcar_init_quirk(struct usb_hcd *hcd) > { > - return 0; > + /* > + * To avoid wait and timeout in xhci_reset() if CONFIG_XHCI_RCAR is > + * disabled, this function fails. > + */ > + return -ENODEV; > } > #endif > #endif /* _XHCI_RCAR_H */ > -- > 1.9.1 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-usb" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html -- balbi
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