Update V4 Remove whitespace
> -----Original Message----- > From: YD [mailto:yuhdar.ts...@gmail.com] > Sent: Thursday, May 25, 2017 5:38 PM > To: gre...@linuxfoundation.org; mathias.ny...@intel.com; linux- > u...@vger.kernel.org > Cc: yd_ts...@asmedia.com.tw > Subject: [PATCH v3] usb:host:xhci:USB 3.1 speed > > From: YD Tseng <yd_ts...@asmedia.com.tw> > > One of the xHCI host controllers supports both USB 3.1/3.0 extended speed > protocol lists. The content of the lists is shown as below. > In xhci-mem.c, the USB 3.1 speed is parsed first, the min_rev of usb3_rhub is set > as 0x10. And then USB 3.0 is parsed. However, the min_rev of usb3_rhub will be > changed to 0x00. If USB 3.1 device is connected behind this host controller, the > speed of USB 3.1 device just reports 5G speed using lsusb. > > 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F > 00 01 08 00 00 00 00 00 40 00 00 00 00 00 00 00 00 > 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 20 02 08 10 03 55 53 42 20 01 02 00 00 00 00 00 00 //USB 3.1 > 30 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 40 02 08 00 03 55 53 42 20 03 06 00 00 00 00 00 00 //USB 3.0 > 50 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > 60 02 08 00 02 55 53 42 20 09 0E 19 00 00 00 00 00 //USB 2.0 > 70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > This patch works around for parsing extended speed protocol lists. If the xHCI > controller supports USB 3.1 and 3.0 extended speed protocol, it could show as > one 3.1 roothub. > > Signed-off-by: YD Tseng <yd_ts...@asmedia.com.tw> > --- > drivers/usb/host/xhci-mem.c | 7 +++++-- > 1 file changed, 5 insertions(+), 2 deletions(-) > > diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index > 1f1687e..fddf273 100644 > --- a/drivers/usb/host/xhci-mem.c > +++ b/drivers/usb/host/xhci-mem.c > @@ -2119,11 +2119,12 @@ static void xhci_add_in_port(struct xhci_hcd *xhci, > unsigned int num_ports, { > u32 temp, port_offset, port_count; > int i; > - u8 major_revision; > + u8 major_revision, minor_revision; > struct xhci_hub *rhub; > > temp = readl(addr); > major_revision = XHCI_EXT_PORT_MAJOR(temp); > + minor_revision = XHCI_EXT_PORT_MINOR(temp); > > if (major_revision == 0x03) { > rhub = &xhci->usb3_rhub; > @@ -2137,7 +2138,9 @@ static void xhci_add_in_port(struct xhci_hcd *xhci, > unsigned int num_ports, > return; > } > rhub->maj_rev = XHCI_EXT_PORT_MAJOR(temp); > - rhub->min_rev = XHCI_EXT_PORT_MINOR(temp); > + > + if (rhub->min_rev < minor_revision) > + rhub->min_rev = minor_revision; > > /* Port offset and count in the third dword, see section 7.2 */ > temp = readl(addr + 2); > -- > 2.7.4 ================================================================================================================== This email and any attachments to it contain confidential information and are intended solely for the use of the individual to whom it is addressed.If you are not the intended recipient or receive it accidentally, please immediately notify the sender by e-mail and delete the message and any attachments from your computer system, and destroy all hard copies. If any, please be advised that any unauthorized disclosure, copying, distribution or any action taken or omitted in reliance on this, is illegal and prohibited. Furthermore, any views or opinions expressed are solely those of the author and do not represent those of ASMedia Technology Inc. Thank you for your cooperation. ================================================================================================================== -- 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
