diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2008-01-10 17:14:53 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-02-01 23:35:03 +0100 |
| commit | cd930c931417295ac6b4d9fea62accc67192ac34 (patch) | |
| tree | a49ca31eaadd53810760c0d363c43e6876312259 /drivers/usb | |
| parent | USB: EHCI: move del_timer_sync calls outside spinlocked region (diff) | |
| download | linux-cd930c931417295ac6b4d9fea62accc67192ac34.tar.xz linux-cd930c931417295ac6b4d9fea62accc67192ac34.zip | |
USB: EHCI: add a short delay to the bus_suspend routine
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 <stern@rowland.harvard.edu>
Acked-by: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | 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 7919a411d5f9..ccd88ae011c6 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; |