* Sebastian Andrzej Siewior | 2010-04-07 09:52:49 [+0200]: >>> Perhaps the drive incorrectly triggers interrupt on setting the nIEN >>> bit -- some drives are known to do this; there is a blacklist of such >>> drives in the IDE core so that it avoids setting nIEN bit for them. >> >>Arghh.... that stinks. Maybe we should port the list over? What is >>the ATA device in question here? > >[ 1.257000] ata1.00: ATA-6: WDC WD1600PB-98FBA0, 15.05R15, max UDMA/100 >[ 1.264000] ata1.00: 312581808 sectors, multi 0: LBA48 >[ 1.269000] ata1.01: ATAPI: HL-DT-ST DVDRAM GSA-4081B, A100, max UDMA/33 >[ 1.335000] scsi 0:0:0:0: Direct-Access ATA WDC WD1600PB-98F 15.0 PQ: 0 ANSI: 5 >[ 1.387000] scsi 0:0:1:0: CD-ROM HL-DT-ST DVDRAM GSA-4081B A100 PQ: 0 ANSI: 5 > >I try to unplug them later and see if the problem goes away once there >is no device. This is odd: - a different HD & CD-ROM => seems to work - just this CD-ROM => IRQ storm - just the HD => [ 6.109000] ata1: link is slow to respond, please be patient (ready=0) [ 11.113000] ata1: device not ready (errno=-16), forcing hardreset [ 16.319000] ata1: link is slow to respond, please be patient (ready=0) [ 21.170000] ata1: SRST failed (errno=-16) [ 26.374000] ata1: link is slow to respond, please be patient (ready=0) [ 31.174000] ata1: SRST failed (errno=-16) [ 36.378000] ata1: link is slow to respond, please be patient (ready=0) - this HD nad other CD-ROM => seems to work The "odd" HD seems to work on X86 however the boot process gets delayed by like 30 seconds. The CD-ROM seems not show any side effects. So I fixed this problem by replacing the HD. Thanks for the pointers :) Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html