[libata] Spurious error msg on ahci controller

[Alejandro Riveira Fernández]

Linux varda 2.6.27-rc7 #9 SMP PREEMPT Mon Sep 22 01:37:23 CEST 2008
x86_64 GNU/Linux


 I got this on dmesg although nothing is attached to that port. 

[  415.871744] ata1: exception Emask 0x10 SAct 0x0 SErr 0x4000000 action 0xe frozen
[  415.873390] ata1: irq_stat 0x00000040, connection status changed
[  415.874642] ata1: SError: { DevExch }
[  415.875472] ata1: hard resetting link
[  416.599282] ata1: SATA link down (SStatus 0 SControl 300)
[  416.600523] ata1: EH complete

lspci

00:00.0 Host bridge: ALi Corporation M1697 HTT Host Bridge
00:01.0 PCI bridge: ALi Corporation PCI Express Root Port
00:02.0 PCI bridge: ALi Corporation PCI Express Root Port
00:03.0 PCI bridge: ALi Corporation PCI Express Root Port
00:04.0 PCI bridge: ALi Corporation PCI Express Root Port
00:11.0 PCI bridge: ALi Corporation M5249 HTT to PCI Bridge
00:12.0 Ethernet controller: ALi Corporation ULi 1689,1573 integrated ethernet. (rev 60)
00:13.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
00:13.1 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
00:13.2 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
00:13.3 USB Controller: ALi Corporation USB 2.0 Controller (rev 01)
00:14.0 Audio device: ALi Corporation High Definition Audio/AC'97 Host Controller (rev 01)
00:15.0 ISA bridge: ALi Corporation PCI to LPC Controller (rev 10)
00:15.1 Bridge: ALi Corporation M7101 Power Management Controller [PMU]
00:16.0 IDE interface: ALi Corporation M5229 IDE (rev c7)
00:16.1 SATA controller: ALi Corporation ULi M5288 SATA
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:00.0 VGA compatible controller: nVidia Corporation G70 [GeForce 7300 GT] (rev a1)
05:0a.0 Network controller: RaLink RT2500 802.11g Cardbus/mini-PCI (rev 01)
05:0b.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet (rev 10)
05:0c.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
05:0c.1 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
05:0c.2 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
05:0c.3 USB Controller: ALi Corporation USB 2.0 Controller (rev 01)

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