Tejun Heo wrote:
On certain configurations (certain macbooks), even though all the conditions for SIDPR access described in the datasheet are met, actually reading those registers just returns 0 and have no effect on write. Verify SIDPR is actually working before enabling it. This is reported by Ryan Roth in bz#10512. Signed-off-by: Tejun Heo <htejun@xxxxxxxxx> Cc: Ryan Roth <ryan.roth@xxxxxxxx> --- Apple did another weird thing with ich8m in addition to the weird lockup on second port enable and SIDPR causes drive misdetection. This one probably should go to -stable too. Thanks. drivers/ata/ata_piix.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+)
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