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Modify ida_v3_done() to treat FIFO status of -1 as FIFO empty (0).

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This is what ida_v4_done() does and seems to be necessary with some
firmware versions on v3 devices.
This commit is contained in:
Matthew N. Dodd 2004-12-14 17:41:51 +00:00
parent b75ab906bc
commit fc601c53dc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=138852
1 changed files with 7 additions and 1 deletions
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8
sys/dev/ida/ida_pci.c
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@ -74,7 +74,13 @@ ida_v3_submit(struct ida_softc *ida, struct ida_qcb *qcb)
static bus_addr_t
ida_v3_done(struct ida_softc *ida)
{
return (ida_inl(ida, R_DONE_FIFO));
bus_addr_t completed;
completed = ida_inl(ida, R_DONE_FIFO);
if (completed == -1) {
return (0); /* fifo is empty */
}
return (completed);
}
static int