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| author | Finn Thain <fthain@telegraphics.com.au> | 2009-12-05 12:30:42 +1100 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-01-18 10:48:10 -0600 |
| commit | 02507a80b35edd720480540d917e9f92cc371009 (patch) | |
| tree | 0da90f4cc680093926073f34fb9ddcb84f4a1aea /block | |
| parent | f2818663c82b7297ff4aa38cbddb870dc02f7104 (diff) | |
| download | linux-3.10-02507a80b35edd720480540d917e9f92cc371009.tar.gz linux-3.10-02507a80b35edd720480540d917e9f92cc371009.tar.bz2 linux-3.10-02507a80b35edd720480540d917e9f92cc371009.zip | |
[SCSI] mac_esp: fix PIO mode, take 2
The mac_esp PIO algorithm no longer works in 2.6.31 and crashes my Centris
660av. So here's a better one.
Also, force async with esp_set_offset() rather than esp_slave_configure().
One of the SCSI drives I tested still doesn't like the PIO mode and fails
with "esp: esp0: Reconnect IRQ2 timeout" (the same drive works fine in
PDMA mode).
This failure happens when esp_reconnect_with_tag() tries to read in two
tag bytes but the chip only provides one (0x20). I don't know what causes
this. I decided not to waste any more time trying to fix it because the
best solution is to rip out the PIO mode altogether and use the DMA
engine.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions