linux-kernel - ata1 timeouts on 2.6.34-rc1

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Date:	Wed, 10 Mar 2010 11:08:49 +0100
From:	Zeno Davatz <zdavatz@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: ata1 timeouts on 2.6.34-rc1

I am on 2.6.34-r1 and I get the same ATA timeouts as Linus gets here:

http://lkml.org/lkml/2010/3/9/345

ata1: clearing spurious IRQ
ata1: lost interrupt (Status 0x50)
ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
ata1.00: failed command: WRITE DMA
ata1.00: cmd ca/00:08:75:98:89/00:00:00:00:00/e3 tag 0 dma 4096 out
         res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata1.00: status: { DRDY }
ata1: soft resetting link
ata1.00: configured for UDMA/133
ata1.00: device reported invalid CHS sector 0
ata1: EH complete
ata1: clearing spurious IRQ
ata1: lost interrupt (Status 0x50)
ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
ata1.00: failed command: READ DMA
ata1.00: cmd c8/00:00:5d:ba:7b/00:00:00:00:00/e4 tag 0 dma 131072 in
         res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata1.00: status: { DRDY }
ata1: soft resetting link
ata1.00: configured for UDMA/133
ata1.00: device reported invalid CHS sector 0
ata1: EH complete
ata1: clearing spurious IRQ
ata1: lost interrupt (Status 0x50)
ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
ata1.00: failed command: READ DMA
ata1.00: cmd c8/00:00:7d:7b:7d/00:00:00:00:00/e4 tag 0 dma 131072 in
         res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata1.00: status: { DRDY }
ata1: soft resetting link
ata1.00: configured for UDMA/133
ata1.00: device reported invalid CHS sector 0
ata1: EH complete
ata1: clearing spurious IRQ
ata1: lost interrupt (Status 0x50)
ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
ata1.00: failed command: READ DMA
ata1.00: cmd c8/00:00:1d:a2:68/00:00:00:00:00/ea tag 0 dma 131072 in
         res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
ata1.00: status: { DRDY }
ata1: soft resetting link
ata1.00: configured for UDMA/133
ata1.00: device reported invalid CHS sector 0
ata1: EH complete

I am also on an Intel SSD (160 GB). Every timeout blocks my PC for some seconds.

Best
Zeno
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