diff options
Diffstat (limited to 'drivers/usb/core/hub.c')
-rw-r--r-- | drivers/usb/core/hub.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 25a7422ee657..8fb484984c86 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c | |||
@@ -2324,12 +2324,16 @@ static unsigned hub_is_wusb(struct usb_hub *hub) | |||
2324 | static int hub_port_reset(struct usb_hub *hub, int port1, | 2324 | static int hub_port_reset(struct usb_hub *hub, int port1, |
2325 | struct usb_device *udev, unsigned int delay, bool warm); | 2325 | struct usb_device *udev, unsigned int delay, bool warm); |
2326 | 2326 | ||
2327 | /* Is a USB 3.0 port in the Inactive state? */ | 2327 | /* Is a USB 3.0 port in the Inactive or Complinance Mode state? |
2328 | static bool hub_port_inactive(struct usb_hub *hub, u16 portstatus) | 2328 | * Port worm reset is required to recover |
2329 | */ | ||
2330 | static bool hub_port_warm_reset_required(struct usb_hub *hub, u16 portstatus) | ||
2329 | { | 2331 | { |
2330 | return hub_is_superspeed(hub->hdev) && | 2332 | return hub_is_superspeed(hub->hdev) && |
2331 | (portstatus & USB_PORT_STAT_LINK_STATE) == | 2333 | (((portstatus & USB_PORT_STAT_LINK_STATE) == |
2332 | USB_SS_PORT_LS_SS_INACTIVE; | 2334 | USB_SS_PORT_LS_SS_INACTIVE) || |
2335 | ((portstatus & USB_PORT_STAT_LINK_STATE) == | ||
2336 | USB_SS_PORT_LS_COMP_MOD)) ; | ||
2333 | } | 2337 | } |
2334 | 2338 | ||
2335 | static int hub_port_wait_reset(struct usb_hub *hub, int port1, | 2339 | static int hub_port_wait_reset(struct usb_hub *hub, int port1, |
@@ -2365,7 +2369,7 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1, | |||
2365 | * | 2369 | * |
2366 | * See https://bugzilla.kernel.org/show_bug.cgi?id=41752 | 2370 | * See https://bugzilla.kernel.org/show_bug.cgi?id=41752 |
2367 | */ | 2371 | */ |
2368 | if (hub_port_inactive(hub, portstatus)) { | 2372 | if (hub_port_warm_reset_required(hub, portstatus)) { |
2369 | int ret; | 2373 | int ret; |
2370 | 2374 | ||
2371 | if ((portchange & USB_PORT_STAT_C_CONNECTION)) | 2375 | if ((portchange & USB_PORT_STAT_C_CONNECTION)) |
@@ -4408,9 +4412,7 @@ static void hub_events(void) | |||
4408 | /* Warm reset a USB3 protocol port if it's in | 4412 | /* Warm reset a USB3 protocol port if it's in |
4409 | * SS.Inactive state. | 4413 | * SS.Inactive state. |
4410 | */ | 4414 | */ |
4411 | if (hub_is_superspeed(hub->hdev) && | 4415 | if (hub_port_warm_reset_required(hub, portstatus)) { |
4412 | (portstatus & USB_PORT_STAT_LINK_STATE) | ||
4413 | == USB_SS_PORT_LS_SS_INACTIVE) { | ||
4414 | dev_dbg(hub_dev, "warm reset port %d\n", i); | 4416 | dev_dbg(hub_dev, "warm reset port %d\n", i); |
4415 | hub_port_reset(hub, i, NULL, | 4417 | hub_port_reset(hub, i, NULL, |
4416 | HUB_BH_RESET_TIME, true); | 4418 | HUB_BH_RESET_TIME, true); |