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authorGerd Hoffmann <kraxel@redhat.com>2016-09-27 10:32:48 +0200
committerGerd Hoffmann <kraxel@redhat.com>2016-10-12 12:37:31 +0200
commit94b037f2a451b3dc855f9f2c346e5049a361bd55 (patch)
tree393fd9925b78a355d507cbf194fa5538f2d217c2 /scripts/coverity-model.c
parent7512b13dd7f77c3e93a5b856eddf78378bddcc7f (diff)
xhci: use linked list for transfers
xhci has a fixed number of 24 (TD_QUEUE) XHCITransfer structs per endpoint, which turns out to be a problem for usb3 devices with 32 (or more) bulk streams. xhci re-checks the trb rings on every finished transfer to make sure it'll pick up any pending work. But that scheme breaks in case the first transfer of a ring can't be started because we ran out of XHCITransfer structs already. So remove static XHCITransfer array from XHCIEPContext. Use a linked list instead, and allocate/free XHCITransfer as needed. Add helper functions to allocate & initialize and to cleanup & release XHCITransfer structs. That also simplifies trb management, we never have to realloc XHCITransfer->trbs because we don't reuse XHCITransfer structs any more. New dynamic limit for in-flight xhci transfers per endpoint is number-of-streams + 16. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-id: 1474965172-30321-5-git-send-email-kraxel@redhat.com
Diffstat (limited to 'scripts/coverity-model.c')
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