From: Alan Stern <[EMAIL PROTECTED]>
This patch (as1031) adds a short delay to the bus-suspend routine in
ehci-hcd. Without it some devices disconnect when they should
suspend.
Signed-off-by: Alan Stern <[EMAIL PROTECTED]>
Acked-by: David Brownell <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/usb/host/ehci-hub.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 7919a41..ccd88ae 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -172,6 +172,10 @@ static int ehci_bus_suspend (struct usb_hcd *hcd)
}
}
+ /* Apparently some devices need a >= 1-uframe delay here */
+ if (ehci->bus_suspended)
+ udelay(150);
+
/* turn off now-idle HC */
ehci_halt (ehci);
hcd->state = HC_STATE_SUSPENDED;
--
1.5.3.8
-
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