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CVS commit: [netbsd-6] src/sys/dev/ata
Module Name: src
Committed By: jdc
Date: Tue Jul 3 21:13:25 UTC 2012
src/sys/dev/ata [netbsd-6]: wd.c
Pull up revision 1.393 (requested by bouyer in ticket #381).
In some case, when an error is reported by the disk, the ahci controller
still reports a number of bytes transfered equal to bcount.
This then triggers a KASSERT in physio_biodone:
if (done == todo)
KASSERT(bp->b_error == 0);
Detect this case in wd(4) (so that the workaround works for other controllers
too if they have the same issue, or if the issue is with the drive)
and claim we didn't read/write anything.
To generate a diff of this commit:
cvs rdiff -u -r1.392 -r1.392.2.1 src/sys/dev/ata/wd.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
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