Possible bug in qla2xxx rev. 8.00.02

["Frank Borich" <Frank_Borich@xxxxxxxxxxxxxx>]

Hi,

I have a controller with a firmware bug that mishandles 
underrun situations for inquiry commands. It correctly
sets the FCP_RESID_UNDER flag however it miscalculates
the FCP_RESID count.  The 7.05.00 Qlogic driver for 2.4.x
kernels thinks frame(s) were lost and retries the command
20 times with no success:


 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
                                        ha->dropped_frame_error_cnt++;
                                        CMD_RESULT(cp) = DID_BUS_BUSY <<
16;
                                        DEBUG2(printk(KERN_INFO
"scsi(%ld): Dropped "
                                                "frame(s) detected (%x
of %x "
                                                "bytes)...retrying
command.\n",
                                                ha->host_no,
                                                resid,
                                                CMD_XFRLEN(cp));)
                                        break;
                                }

Just wondering why the 8.00.02 driver for 2.6.x kernels did not
detect this transport error ?  Latest Emulex and LSI drivers did
not detect this either ???

Thanks,
Frank

 
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