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authoriedowse <iedowse@FreeBSD.org>2006-01-15 21:03:19 +0000
committeriedowse <iedowse@FreeBSD.org>2006-01-15 21:03:19 +0000
commit08f12da89e4e44fb70838e3034b8a53c820e4a94 (patch)
treedc5e95154f45d0649ffb78f44c7dcd521cbcf008 /COPYRIGHT
parent057cec0ceb81de5bf9a310a4b88d537ed506da80 (diff)
downloadFreeBSD-src-08f12da89e4e44fb70838e3034b8a53c820e4a94.zip
FreeBSD-src-08f12da89e4e44fb70838e3034b8a53c820e4a94.tar.gz
Work around a problem seen on VIA EHCI controllers where occasionally
an interrupt appears to occur before the transfer has been marked as completed. This caused umass transfers to get stuck, especially when writing large files. The workaround sets up a timer that rechecks for missed completed transfers if some operations are still pending. Other suggested workarounds, such as performing a PCI read immediately after acknowledging the interrupts, do not appear to help. Obtained from: OpenBSD
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