[SCSI] qla2xxx: Correct residual-count handling discrepancies during UNDERRUN handling.

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For recent ISPs, software during CS_UNDERRUN handling must
determine if the two residuals, firmware-calculated and FCP_RSP,
are different to recognize if a frame has been dropped.  Update
the driver to catch this condition, and clear the
SS_RESIDUAL_UNDER and lscsi_status bits.  This logic is
consistent with what earlier firmwares did by explicitly
cracking open the FCP_RSP statuses and clearing
SS_RESIDUAL_UNDER.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

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Andrew Vasquez 2007-10-19 15:59:18 -07:00 • committed by James Bottomley

parent 285d0321d1

commit 6acf819002

1 changed files with 7 additions and 1 deletions

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drivers/scsi/qla2xxx/qla_isr.c

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