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| author | Andiry Xu <andiry.xu@amd.com> | 2010-07-22 15:23:25 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-10 14:35:41 -0700 |
| commit | d18240db797ed749b511b8dc910c5dcf08be46d6 (patch) | |
| tree | fe358df8e823593a144597252e72c32b6434abd2 /drivers/usb/host/xhci.h | |
| parent | 986a92d44810cad915279fdc942e2fd2c2857499 (diff) | |
| download | linux-d18240db797ed749b511b8dc910c5dcf08be46d6.tar.gz | |
USB: xHCI: Missed Service Error Event process
This patch adds mechanism to process Missed Service Error Event. Sometimes the xHC is unable to process the isoc TDs in time, it will generate Missed Service Error Event. In this case some TDs on the ring are not processed and missed. When encounter a Missed Servce Error Event, set the skip flag of the ep, and process the missed TDs until reach the next processed TD, then clear the skip flag. Signed-off-by: Andiry Xu <andiry.xu@amd.com> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/xhci.h')
| -rw-r--r-- | drivers/usb/host/xhci.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 5bc03d1c2beb..f4dfb26a65aa 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -720,6 +720,14 @@ struct xhci_virt_ep { struct timer_list stop_cmd_timer; int stop_cmds_pending; struct xhci_hcd *xhci; + /* + * Sometimes the xHC can not process isochronous endpoint ring quickly + * enough, and it will miss some isoc tds on the ring and generate + * a Missed Service Error Event. + * Set skip flag when receive a Missed Service Error Event and + * process the missed tds on the endpoint ring. + */ + bool skip; }; struct xhci_virt_device { |