diff options
| author | David Vrabel <david.vrabel@csr.com> | 2009-06-24 19:26:40 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-09-23 15:46:21 +0200 |
| commit | 831baa4915de465357b25c471bbb9b36472024df (patch) | |
| tree | b28e8365e77defb84ba1437993b64be753274ead /drivers/usb/host/whci/asl.c | |
| parent | USB: Add nuvoton Ehci driver for w90p910 platform (diff) | |
| download | linux-831baa4915de465357b25c471bbb9b36472024df.tar.xz linux-831baa4915de465357b25c471bbb9b36472024df.zip | |
USB: whci-hcd: make endpoint_reset method async
usb_hcd_endpoint_reset() may be called in atomic context and must not
sleep. So make whci-hcd's endpoint_reset() asynchronous. URBs
submitted while the reset is in progress will be queued (on the std
list) and transfers will resume once the reset is complete.
Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/whci/asl.c')
| -rw-r--r-- | drivers/usb/host/whci/asl.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/usb/host/whci/asl.c b/drivers/usb/host/whci/asl.c index c2050785a819..c632437c7649 100644 --- a/drivers/usb/host/whci/asl.c +++ b/drivers/usb/host/whci/asl.c @@ -227,11 +227,21 @@ void scan_async_work(struct work_struct *work) /* * Now that the ASL is updated, complete the removal of any * removed qsets. + * + * If the qset was to be reset, do so and reinsert it into the + * ASL if it has pending transfers. */ spin_lock_irq(&whc->lock); list_for_each_entry_safe(qset, t, &whc->async_removed_list, list_node) { qset_remove_complete(whc, qset); + if (qset->reset) { + qset_reset(whc, qset); + if (!list_empty(&qset->stds)) { + asl_qset_insert_begin(whc, qset); + queue_work(whc->workqueue, &whc->async_work); + } + } } spin_unlock_irq(&whc->lock); @@ -267,7 +277,7 @@ int asl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags) else err = qset_add_urb(whc, qset, urb, GFP_ATOMIC); if (!err) { - if (!qset->in_sw_list) + if (!qset->in_sw_list && !qset->remove) asl_qset_insert_begin(whc, qset); } else usb_hcd_unlink_urb_from_ep(&whc->wusbhc.usb_hcd, urb); |