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authorJussi Kivilinna <jussi.kivilinna@mbnet.fi>2011-06-20 15:42:44 +0400
committerJohn W. Linville <linville@tuxdriver.com>2011-06-23 00:09:46 +0400
commitc900eff30a14ecf209ee7a17a7c3c54890694ce6 (patch)
treea408e64682e04326bcb334409e0f1130f8222cde /drivers/net/ksz884x.c
parentf762d8c3f8b502b93d20bd755fc30ce99d3d0abd (diff)
downloadlinux-c900eff30a14ecf209ee7a17a7c3c54890694ce6.tar.xz
zd1211rw: handle lost read-reg interrupts
Device losses read-reg interrupts. By looking at usbmon it appears that USB_INT_ID_RETRY_FAILED can override USB_INT_ID_REGS. This causes read command to timeout, usually under heavy TX. Fix by retrying read registers again if USB_INT_ID_RETRY_FAILED is received while waiting for USB_INT_ID_REGS. However USB_INT_ID_REGS is not always lost but is received after USB_INT_ID_RETRY_FAILED and is usually received by the retried read command. USB_INT_ID_REGS of the retry is then left unhandled and might be received by next read command. Handle this by ignoring previous USB_INT_ID_REGS that doesn't match current read command request. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/ksz884x.c')
0 files changed, 0 insertions, 0 deletions