> [ Sigh, this issue seems to go back to: > > commit 669a5db411d85a14f86cd92bc16bf7ab5b8aa235 > Author: Jeff Garzik <jeff@xxxxxxxxxx> > Date: Tue Aug 29 18:12:40 2006 -0400 > > [libata] Add a bunch of PATA drivers. ] No its quite recent actually - broke around 2.6.27 The libata drivers try and reset the simplex bits to check if a device is merely in simplex mode by configuration. Unfortunately on the ALi if you put the device into a power saving mode and bring it back the simplex bits get corrupted and the register becomes unwritable (even to restore) Somewhere around 2.6.27 something started rudely dumping the device into power saving mode outside of the ATA layer on certain PCs. So we switch to ignoring the bit in the first place on this chip. Alan -- 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
