This patch is to set xhci root hub's DeviceRemovable according to usb port's
connect type which currently comes from ACPI information. If ACPI information
was different with PORTSC, there would be a warning.
Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx>
---
drivers/usb/host/xhci-hub.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index aa90ad4..0c25a73 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -97,11 +97,18 @@ static void xhci_usb2_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci,
/* If a device is removable, PORTSC reports a 0, same as in the
* hub descriptor DeviceRemovable bits.
*/
- if (portsc & PORT_DEV_REMOVE)
+ if (usb_get_hub_port_connect_type(
+ hcd->self.root_hub, i + 1)
+ == USB_PORT_CONNECT_TYPE_HARD_WIRED) {
+ if (!(portsc & PORT_DEV_REMOVE))
+ xhci_warn(xhci, "usb2.0 port%d's connect type from ACPI is different with PORTSC register. ACPI returns hard-wired.\n",
+ i + 1);
+
/* This math is hairy because bit 0 of DeviceRemovable
* is reserved, and bit 1 is for port 1, etc.
*/
port_removable[(i + 1) / 8] |= 1 << ((i + 1) % 8);
+ }
}
/* ch11.h defines a hub descriptor that has room for USB_MAXCHILDREN
@@ -148,8 +155,16 @@ static void xhci_usb3_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci,
/* bit 0 is reserved, bit 1 is for port 1, etc. */
for (i = 0; i < ports; i++) {
portsc = xhci_readl(xhci, xhci->usb3_ports[i]);
- if (portsc & PORT_DEV_REMOVE)
+
+ if (usb_get_hub_port_connect_type(
+ hcd->self.root_hub, i + 1)
+ == USB_PORT_CONNECT_TYPE_HARD_WIRED) {
+ if (!(portsc & PORT_DEV_REMOVE))
+ xhci_warn(xhci, "usb3.0 port%d's connect type from ACPI is different with PORTSC register. ACPI returns hard-wired.\n",
+ i + 1);
+
port_removable |= 1 << (i + 1);
+ }
}
memset(&desc->u.ss.DeviceRemovable,
(__force __u16) cpu_to_le16(port_removable),
--
1.7.9.5
--
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