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[PATCH] USB UHCI: Add root hub states

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This patch starts making some serious changes to the UHCI driver.
There's a set of private states for the root hub, and the internal
routines for suspending and resuming work completely differently, with
transitions based on the new states.  Now the driver distinguishes
between a privately auto-stopped state and a publicly suspended state,
and it will properly suspend controllers with broken resume-detect
interrupts instead of resetting them.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern
2005-04-09 17:27:32 -04:00
committed by Greg Kroah-Hartman
parent f5946f8220
commit c8f4fe4358
4 changed files with 210 additions and 154 deletions
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2
drivers/usb/host/uhci-hub.c
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@@ -60,7 +60,7 @@ static int uhci_hub_status_data(struct usb_hcd *hcd, char *buf)
test_bit(port, &uhci->port_c_suspend))
*buf |= (1 << (port + 1));
}
if (*buf && uhci->state == UHCI_SUSPENDED)
if (*buf && uhci->is_stopped)
uhci->resume_detect = 1;
return !!*buf;
}