Pavel Machek wrote: > Hi! > >>> I see strange problems on machine with sata_svw. The machine seems to >>> corrupt data every few days (ext3 error, dir index corrupted), and has >>> some other very strange problems (keyboard misbehaves, pulling out >>> SATA disk cures it, see >>> https://bugzilla.novell.com/show_bug.cgi?id=400772 ). >>> >>> Then I got to the comment >>> >>> writeb(dmactl | ATA_DMA_START, mmio + ATA_DMA_CMD); >>> /* There is a race condition in certain SATA controllers >>> that can be seen when the r/w command is given to the controller >>> before the host DMA is started. On a Read command, the controller > ... >>> ...and that would certainly explain what we are seeing. Are >>> serverworks controllers broken by design? >> The comment looks like a warning to me as the DMA engine is started >> before the command is issued to the drive as explained in the next >> comment. > > Ok, what about this? > > --- > > Clarify data corruption comment. > > Signed-off-by: Pavel Machek <pavel@xxxxxxx> Acked-by: Tejun Heo <tj@xxxxxxxxxx> -- tejun -- 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
