When using my Seagate FreeAgent GoFlex eSATAp external disk enclosure, interface errors are always seen until 1.5Gbps is negotiated [1]. This occurs using any disk in the enclosure, and when the disk is connected directly with a generic passive eSATAp cable, we see stable 3Gbps operation as expected. Blacklist 3Gbps mode to avoid dataloss and the ~30s delay bus reset and renegotiation incurs. Signed-off-by: Daniel J Blueman <daniel@xxxxxxxxx> --- drivers/ata/libata-core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 28db50b..0781510 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4119,6 +4119,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = { /* Devices which aren't very happy with higher link speeds */ { "WD My Book", NULL, ATA_HORKAGE_1_5_GBPS, }, + { "Seagate FreeAgent GoFlex", NULL, ATA_HORKAGE_1_5_GBPS, }, /* * Devices which choke on SETXFER. Applies only if both the --- [1] <disk plugged into external eSATAp port> ata5: exception Emask 0x10 SAct 0x0 SErr 0x4050000 action 0xe frozen ata5: irq_stat 0x00400040, connection status changed ata5: SError: { PHYRdyChg CommWake DevExch } ata5: hard resetting link ata5: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata5.00: ATA-8: Seagate FreeAgent GoFlex, 0110, max UDMA/133 ata5.00: 2930277168 sectors, multi 0: LBA48 ata5.00: configured for UDMA/133 ata5: EH complete scsi 4:0:0:0: Direct-Access ATA Seagate FreeAgen 0110 PQ: 0 ANSI: 5 sd 4:0:0:0: [sdb] 2930277168 512-byte logical blocks: (1.50 TB/1.36 TiB) sd 4:0:0:0: [sdb] 4096-byte physical blocks sd 4:0:0:0: [sdb] Write Protect is off sd 4:0:0:0: [sdb] Mode Sense: 00 3a 00 00 sd 4:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 4:0:0:0: Attached scsi generic sg1 type 0 sdb: unknown partition table sd 4:0:0:0: [sdb] Attached SCSI disk EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null) ata5.00: exception Emask 0x10 SAct 0x0 SErr 0x400100 action 0x6 frozen ata5.00: irq_stat 0x08000000, interface fatal error ata5: SError: { UnrecovData Handshk } ata5.00: failed command: WRITE DMA EXT ata5.00: cmd 35/00:00:38:db:61/00:04:6d:00:00/e0 tag 0 dma 524288 out res 50/00:00:37:db:61/00:00:6d:00:00/e0 Emask 0x10 (ATA bus error) ata5.00: status: { DRDY } ata5: hard resetting link ata5: link is slow to respond, please be patient (ready=0) ata5: COMRESET failed (errno=-16) ata5: hard resetting link ata5: link is slow to respond, please be patient (ready=0) ata5: COMRESET failed (errno=-16) ata5: hard resetting link ata5: link is slow to respond, please be patient (ready=0) ata5: COMRESET failed (errno=-16) ata5: limiting SATA link speed to 1.5 Gbps ata5: hard resetting link ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 310) ata5.00: configured for UDMA/133 sd 4:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08 sd 4:0:0:0: [sdb] Sense Key : 0xb [current] [descriptor] Descriptor sense data with sense descriptors (in hex): 72 0b 00 00 00 00 00 0c 00 0a 80 00 00 00 00 00 6d 61 db 37 sd 4:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 sd 4:0:0:0: [sdb] CDB: cdb[0]=0x2a: 2a 00 6d 61 db 38 00 04 00 00 end_request: I/O error, dev sdb, sector 1835129656 Buffer I/O error on device dm-0, logical block 229390950 Buffer I/O error on device dm-0, logical block 229390951 Buffer I/O error on device dm-0, logical block 229390952 Buffer I/O error on device dm-0, logical block 229390953 Buffer I/O error on device dm-0, logical block 229390954 Buffer I/O error on device dm-0, logical block 229390955 Buffer I/O error on device dm-0, logical block 229390956 Buffer I/O error on device dm-0, logical block 229390957 Buffer I/O error on device dm-0, logical block 229390958 Buffer I/O error on device dm-0, logical block 229390959 Buffer I/O error on device dm-0, logical block 229390960 Buffer I/O error on device dm-0, logical block 229390961 Buffer I/O error on device dm-0, logical block 229390962 Buffer I/O error on device dm-0, logical block 229390963 Buffer I/O error on device dm-0, logical block 229390964 Buffer I/O error on device dm-0, logical block 229390965 Buffer I/O error on device dm-0, logical block 229390966 Buffer I/O error on device dm-0, logical block 229390967 Buffer I/O error on device dm-0, logical block 229390968 Buffer I/O error on device dm-0, logical block 229390969 Buffer I/O error on device dm-0, logical block 229390970 Buffer I/O error on device dm-0, logical block 229390971 Buffer I/O error on device dm-0, logical block 229390972 Buffer I/O error on device dm-0, logical block 229390973 Buffer I/O error on device dm-0, logical block 229390974 Buffer I/O error on device dm-0, logical block 229390975 Buffer I/O error on device dm-0, logical block 229390976 Buffer I/O error on device dm-0, logical block 229390977 Buffer I/O error on device dm-0, logical block 229390978 Buffer I/O error on device dm-0, logical block 229390979 Buffer I/O error on device dm-0, logical block 229390980 Buffer I/O error on device dm-0, logical block 229390981 Buffer I/O error on device dm-0, logical block 229390982 Buffer I/O error on device dm-0, logical block 229390983 Buffer I/O error on device dm-0, logical block 229390984 Buffer I/O error on device dm-0, logical block 229390985 Buffer I/O error on device dm-0, logical block 229390986 Buffer I/O error on device dm-0, logical block 229390987 Buffer I/O error on device dm-0, logical block 229390988 Buffer I/O error on device dm-0, logical block 229390989 Buffer I/O error on device dm-0, logical block 229390990 Buffer I/O error on device dm-0, logical block 229390991 Buffer I/O error on device dm-0, logical block 229390992 Buffer I/O error on device dm-0, logical block 229390993 Buffer I/O error on device dm-0, logical block 229390994 Buffer I/O error on device dm-0, logical block 229390995 Buffer I/O error on device dm-0, logical block 229390996 Buffer I/O error on device dm-0, logical block 229390997 Buffer I/O error on device dm-0, logical block 229390998 Buffer I/O error on device dm-0, logical block 229390999 Buffer I/O error on device dm-0, logical block 229391000 Buffer I/O error on device dm-0, logical block 229391001 Buffer I/O error on device dm-0, logical block 229391002 Buffer I/O error on device dm-0, logical block 229391003 Buffer I/O error on device dm-0, logical block 229391004 Buffer I/O error on device dm-0, logical block 229391005 Buffer I/O error on device dm-0, logical block 229391006 Buffer I/O error on device dm-0, logical block 229391007 Buffer I/O error on device dm-0, logical block 229391008 Buffer I/O error on device dm-0, logical block 229391009 Buffer I/O error on device dm-0, logical block 229391010 Buffer I/O error on device dm-0, logical block 229391011 Buffer I/O error on device dm-0, logical block 229391012 Buffer I/O error on device dm-0, logical block 229391013 Buffer I/O error on device dm-0, logical block 229391014 Buffer I/O error on device dm-0, logical block 229391015 Buffer I/O error on device dm-0, logical block 229391016 Buffer I/O error on device dm-0, logical block 229391017 Buffer I/O error on device dm-0, logical block 229391018 Buffer I/O error on device dm-0, logical block 229391019 Buffer I/O error on device dm-0, logical block 229391020 Buffer I/O error on device dm-0, logical block 229391021 Buffer I/O error on device dm-0, logical block 229391022 Buffer I/O error on device dm-0, logical block 229391023 Buffer I/O error on device dm-0, logical block 229391024 Buffer I/O error on device dm-0, logical block 229391025 Buffer I/O error on device dm-0, logical block 229391026 Buffer I/O error on device dm-0, logical block 229391027 Buffer I/O error on device dm-0, logical block 229391028 Buffer I/O error on device dm-0, logical block 229391029 Buffer I/O error on device dm-0, logical block 229391030 Buffer I/O error on device dm-0, logical block 229391031 Buffer I/O error on device dm-0, logical block 229391032 Buffer I/O error on device dm-0, logical block 229391033 Buffer I/O error on device dm-0, logical block 229391034 Buffer I/O error on device dm-0, logical block 229391035 Buffer I/O error on device dm-0, logical block 229391036 Buffer I/O error on device dm-0, logical block 229391037 Buffer I/O error on device dm-0, logical block 229391038 Buffer I/O error on device dm-0, logical block 229391039 Buffer I/O error on device dm-0, logical block 229391040 Buffer I/O error on device dm-0, logical block 229391041 Buffer I/O error on device dm-0, logical block 229391042 Buffer I/O error on device dm-0, logical block 229391043 Buffer I/O error on device dm-0, logical block 229391044 Buffer I/O error on device dm-0, logical block 229391045 Buffer I/O error on device dm-0, logical block 229391046 Buffer I/O error on device dm-0, logical block 229391047 Buffer I/O error on device dm-0, logical block 229391048 Buffer I/O error on device dm-0, logical block 229391049 Buffer I/O error on device dm-0, logical block 229391050 Buffer I/O error on device dm-0, logical block 229391051 Buffer I/O error on device dm-0, logical block 229391052 Buffer I/O error on device dm-0, logical block 229391053 Buffer I/O error on device dm-0, logical block 229391054 Buffer I/O error on device dm-0, logical block 229391055 Buffer I/O error on device dm-0, logical block 229391056 Buffer I/O error on device dm-0, logical block 229391057 Buffer I/O error on device dm-0, logical block 229391058 Buffer I/O error on device dm-0, logical block 229391059 Buffer I/O error on device dm-0, logical block 229391060 Buffer I/O error on device dm-0, logical block 229391061 Buffer I/O error on device dm-0, logical block 229391062 Buffer I/O error on device dm-0, logical block 229391063 Buffer I/O error on device dm-0, logical block 229391064 Buffer I/O error on device dm-0, logical block 229391065 Buffer I/O error on device dm-0, logical block 229391066 Buffer I/O error on device dm-0, logical block 229391067 Buffer I/O error on device dm-0, logical block 229391068 Buffer I/O error on device dm-0, logical block 229391069 Buffer I/O error on device dm-0, logical block 229391070 Buffer I/O error on device dm-0, logical block 229391071 Buffer I/O error on device dm-0, logical block 229391072 Buffer I/O error on device dm-0, logical block 229391073 Buffer I/O error on device dm-0, logical block 229391074 Buffer I/O error on device dm-0, logical block 229391075 Buffer I/O error on device dm-0, logical block 229391076 Buffer I/O error on device dm-0, logical block 229391077 EXT4-fs warning (device dm-0): ext4_end_bio:250: I/O error writing to inode 57281456 (offset 3145728 size 524288 starting block 229390950) ata5: EH complete JBD2: Detected IO errors while flushing file data on dm-0-8 -- Daniel J Blueman -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at 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