diff options
| author | David Brownell <david-b@pacbell.net> | 2005-09-27 10:38:54 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2005-10-28 16:47:41 -0700 |
| commit | b13296c6617f22e8c0174a7af32780617db0e680 (patch) | |
| tree | 980ed483e5df92335894405ac7eb37380598190d /drivers/usb/core | |
| parent | 5edbfb7c8af0577097dae87cdd4dfdba82bb9579 (diff) | |
| download | linux-b13296c6617f22e8c0174a7af32780617db0e680.tar.bz2 | |
[PATCH] updates for "controller suspended" handling
Reject URBs to _all_ devices when their host controllers are suspended;
even root hub registers will be unavailable. Also, don't reject urbs
to root hubs in other cases; the only upstream link is through that
controller (on PCI or whatever SOC bus is in use).
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/core/hcd.c | 28 ++++++++++++----------------
drivers/usb/core/urb.c | 3 ++-
2 files changed, 14 insertions(+), 17 deletions(-)
Diffstat (limited to 'drivers/usb/core')
| -rw-r--r-- | drivers/usb/core/hcd.c | 28 | ||||
| -rw-r--r-- | drivers/usb/core/urb.c | 3 |
2 files changed, 14 insertions, 17 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index de59bb515315..b7bb8dd1894a 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -458,22 +458,18 @@ static int rh_call_control (struct usb_hcd *hcd, struct urb *urb) default: /* non-generic request */ - if (HC_IS_SUSPENDED (hcd->state)) - status = -EAGAIN; - else { - switch (typeReq) { - case GetHubStatus: - case GetPortStatus: - len = 4; - break; - case GetHubDescriptor: - len = sizeof (struct usb_hub_descriptor); - break; - } - status = hcd->driver->hub_control (hcd, - typeReq, wValue, wIndex, - tbuf, wLength); + switch (typeReq) { + case GetHubStatus: + case GetPortStatus: + len = 4; + break; + case GetHubDescriptor: + len = sizeof (struct usb_hub_descriptor); + break; } + status = hcd->driver->hub_control (hcd, + typeReq, wValue, wIndex, + tbuf, wLength); break; error: /* "protocol stall" on error */ @@ -487,7 +483,7 @@ error: "CTRL: TypeReq=0x%x val=0x%x " "idx=0x%x len=%d ==> %d\n", typeReq, wValue, wIndex, - wLength, urb->status); + wLength, status); } } if (len) { diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index b32898e0a27d..f2a1fed2a802 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -237,7 +237,8 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) (dev->state < USB_STATE_DEFAULT) || (!dev->bus) || (dev->devnum <= 0)) return -ENODEV; - if (dev->state == USB_STATE_SUSPENDED) + if (dev->bus->controller->power.power_state.event != PM_EVENT_ON + || dev->state == USB_STATE_SUSPENDED) return -EHOSTUNREACH; if (!(op = dev->bus->op) || !op->submit_urb) return -ENODEV; |