diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2012-04-03 15:24:30 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-04-09 15:43:21 -0700 |
| commit | a448e4dc25303fe551e4dafe16c8c7c34f1b9d82 (patch) | |
| tree | f5ae9b654defe5170fd5be0146888f57fde54751 /drivers/usb/host/ehci.h | |
| parent | 879d38e6bc36d73b0ac40ec9b0d839fda9fa8b1a (diff) | |
EHCI: keep track of ports being resumed and indicate in hub_status_data
This patch (as1537) adds a bit-array to ehci-hcd for keeping track of
which ports are undergoing a resume transition. If any of the bits
are set when ehci_hub_status_data() is called, the routine will return
a nonzero value even if no ports have any status changes pending.
This will allow usbcore to handle races between root-hub suspend and
port wakeup.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Sarah Sharp <sarah.a.sharp@linux.intel.com>
CC: Chen Peter-B29397 <B29397@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ehci.h')
| -rw-r--r-- | drivers/usb/host/ehci.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 8f9acbc96fde..2694ed6558d2 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -117,6 +117,8 @@ struct ehci_hcd { /* one per controller */ the change-suspend feature turned on */ unsigned long suspended_ports; /* which ports are suspended */ + unsigned long resuming_ports; /* which ports have + started to resume */ /* per-HC memory pools (could be per-bus, but ...) */ struct dma_pool *qh_pool; /* qh per active urb */ |