linux-kernel - Re: [PATCH] libata: Add MMIO support to pata

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Message-Id: <32334D99-DB01-4645-97DC-88D2E7BA2BE5@ngndg.com>
Date:	Tue, 12 Feb 2008 15:58:08 +0000
From:	Tim Ellis <tim@...dg.com>
To:	linux-kernel@...r.kernel.org
Cc:	jeff@...zik.org, benh@...nel.crashing.org,
	Guennadi Liakhovetski <g.liakhovetski@....de>
Subject: Re: [PATCH] libata: Add MMIO support to pata_sil680

Hi,
This change causes attached drives to no longer be detected and  
function on the PowerPC Buffalo Linkstation machines:

<7>pata_sil680 0000:00:0c.0: version 0.4.8
<6>sil680: 133MHz clock.
<6>scsi0 : pata_sil680
<6>scsi1 : pata_sil680
<6>ata1: PATA max UDMA/133 irq 18
<6>ata2: PATA max UDMA/133 irq 18

If I roll back this driver to before this change with 2.6.24.2 it works:

<7>pata_sil680 0000:00:0c.0: version 0.4.7
<6>sil680: 133MHz clock.
<6>scsi0 : pata_sil680
<6>scsi1 : pata_sil680
<6>ata1: PATA max UDMA/133 cmd 0xbffed0 ctl 0xbffed8 bmdma 0xbffef0  
irq 18
<6>ata2: PATA max UDMA/133 cmd 0xbffee0 ctl 0xbffee8 bmdma 0xbffef8  
irq 18
<6>ata1.00: ATA-6: WDC WD3200JB-00KFA0, 08.05J08, max UDMA/100
<6>ata1.00: 625142448 sectors, multi 0: LBA48
<6>ata1.00: configured for UDMA/100
<5>scsi 0:0:0:0: Direct-Access     ATA      WDC WD3200JB-00K 08.0 PQ:  
0 ANSI: 5
<5>sd 0:0:0:0: [sda] 625142448 512-byte hardware sectors (320073 MB)
<5>sd 0:0:0:0: [sda] Write Protect is off
<7>sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
<5>sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled,  
doesn't support DPO or FUA
<5>sd 0:0:0:0: [sda] 625142448 512-byte hardware sectors (320073 MB)
<5>sd 0:0:0:0: [sda] Write Protect is off
<7>sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
<5>sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled,  
doesn't support DPO or FUA
<6> sda: sda1 sda2 sda3 sda4
<5>sd 0:0:0:0: [sda] Attached SCSI disk
<5>sd 0:0:0:0: Attached scsi generic sg0 type 0

I have ensured the other sil680 driver is not enabled!
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