AHCI: Fix softreset failed issue of Port Multiplier
Current code doesn't update port value of Port Multiplier(PM) when sending FIS of softreset to device, command will fail if FBS is enabled. There are two ways to fix the issue: the first is to disable FBS before sending softreset command to PM device and the second is to update port value of PM when sending command. For the first way, i can't find any related rule in AHCI Spec. The second way can avoid disabling FBS and has better performance. Signed-off-by:Xiangliang Yu <Xiangliang.Yu@amd.com> Signed-off-by:
Tejun Heo <tj@kernel.org> Cc: stable@vger.kernel.org
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4f1dd973