scsi: g_NCR5380: Two DTC436 PDMA workarounds

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Limit PDMA send to 512 B to avoid data corruption on DTC3181E. The
corruption is always the same: one byte missing at the beginning of a
128 B block. It happens only with slow Quantum LPS 240 drive, not with
faster IBM DORS-32160. It's not clear what causes this. Documentation
for the DTC436 chip has not been made available.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Ondrej Zary 2017-07-03 03:59:06 -04:00 • committed by Martin K. Petersen

parent 99a974e6b8

commit facfc963ae

1 changed files with 11 additions and 2 deletions

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drivers/scsi/g_NCR5380.c

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