diff options
Diffstat (limited to 'drivers/usb/wusbcore/wa-hc.h')
| -rw-r--r-- | drivers/usb/wusbcore/wa-hc.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/usb/wusbcore/wa-hc.h b/drivers/usb/wusbcore/wa-hc.h index ab399343757e..b44aca3f25dd 100644 --- a/drivers/usb/wusbcore/wa-hc.h +++ b/drivers/usb/wusbcore/wa-hc.h @@ -122,6 +122,11 @@ struct wa_rpipe { }; +enum wa_dti_state { + WA_DTI_TRANSFER_RESULT_PENDING, + WA_DTI_ISOC_PACKET_STATUS_PENDING +}; + /** * Instance of a HWA Host Controller * @@ -181,6 +186,15 @@ struct wahc { spinlock_t rpipe_bm_lock; /* protect rpipe_bm */ struct mutex rpipe_mutex; /* assigning resources to endpoints */ + /* + * dti_state is used to track the state of the dti_urb. When dti_state + * is WA_DTI_ISOC_PACKET_STATUS_PENDING, dti_isoc_xfer_in_progress and + * dti_isoc_xfer_seg identify which xfer the incoming isoc packet status + * refers to. + */ + enum wa_dti_state dti_state; + u32 dti_isoc_xfer_in_progress; + u8 dti_isoc_xfer_seg; struct urb *dti_urb; /* URB for reading xfer results */ struct urb *buf_in_urb; /* URB for reading data in */ struct edc dti_edc; /* DTI error density counter */ @@ -247,6 +261,7 @@ static inline void wa_init(struct wahc *wa) { edc_init(&wa->nep_edc); atomic_set(&wa->notifs_queued, 0); + wa->dti_state = WA_DTI_TRANSFER_RESULT_PENDING; wa_rpipe_init(wa); edc_init(&wa->dti_edc); INIT_LIST_HEAD(&wa->xfer_list); |