linux-kernel - Re: [PATCH] libata: fix suspend/resume for ATA SEMB devices

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Date:	Mon, 11 May 2009 14:34:32 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	petkovbb@...il.com, Tejun Heo <htejun@...il.com>,
	Jeff Garzik <jeff@...zik.org>, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] libata: fix suspend/resume for ATA SEMB devices

Borislav Petkov wrote:
> From: Borislav Petkov <petkovbb@...il.com>
> Date: Sun, 26 Apr 2009 16:33:34 +0200
> Subject: [PATCH] libata: fix suspend/resume for ATA SEMB devices
> 
> 79b42babbac2a5a522b8e269fb2811b6e1063030 fixed identifying ATA devices
> reporting 3c/c3 signature which belongs to SEMB devices now. However,
> suspending the machine with such device (WDC WD2500AAJS-6 01.0) fails
> with the following:
> 
> hda: host max PIO4 wanted PIO255(auto-tune) selected PIO4
> hda: UDMA/100 mode selected
> hdb: host max PIO4 wanted PIO255(auto-tune) selected PIO4
> hdb: UDMA/66 mode selected
> sd 1:0:0:0: [sda] Starting disk
> ata5: SATA link down (SStatus 0 SControl 300)
> ata1: SATA link down (SStatus 0 SControl 300)
> ata3: SATA link down (SStatus 0 SControl 300)
> ata6: SATA link down (SStatus 0 SControl 300)
> ata2: softreset failed (device not ready)
> ata2: failed due to HW bug, retry pmp=0
> ata4: softreset failed (device not ready)
> ata4: failed due to HW bug, retry pmp=0
> ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> ata2.00: class mismatch 1 != 7
> ata2.00: revalidation failed (errno=-19)
> ata2: limiting SATA link speed to 1.5 Gbps
> ata4.00: configured for UDMA/133
> ata2: softreset failed (device not ready)
> ata2: failed due to HW bug, retry pmp=0
> ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
> ata2.00: class mismatch 1 != 7
> ata2.00: revalidation failed (errno=-19)
> ata2.00: disabled
> sd 1:0:0:0: rejecting I/O to offline device
> sd 1:0:0:0: [sda] START_STOP FAILED
> sd 1:0:0:0: [sda] Result: hostbyte=0x01 driverbyte=0x00
> PM: Device 1:0:0:0 failed to thaw: error 65536
> sd 3:0:0:0: [sdb] Starting disk
> 
> due to a class mismatch in ata_dev_revalidate(). Fix it by adding the
> ATA_DEV_SEMB device class to the check.
> 
> CC: Tejun Heo <htejun@...il.com>
> CC: Jeff Garzik <jeff@...zik.org>
> Signed-off-by: Borislav Petkov <petkovbb@...il.com>
> ---
>  drivers/ata/libata-core.c |    4 +++-
>  1 files changed, 3 insertions(+), 1 deletions(-)

applied


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