Re: [PATCH v3 2/2] ahci_xgene: Fix the DMA state machine lockup for the ATA_CMD_PACKET PIO mode command.

2015-01-05 Thread Tejun Heo
On Mon, Dec 29, 2014 at 08:52:47AM +0530, Suman Tripathi wrote: > This patch addresses the issue with ATA_CMD_PACKET pio mode > command for enumeration and device detection with ATAPI devices. > The X-Gene AHCI controller has an errata in which it cannot clear > the BSY bit after the PIO setup FIS.

[PATCH v3 2/2] ahci_xgene: Fix the DMA state machine lockup for the ATA_CMD_PACKET PIO mode command.

2014-12-28 Thread Suman Tripathi
This patch addresses the issue with ATA_CMD_PACKET pio mode command for enumeration and device detection with ATAPI devices. The X-Gene AHCI controller has an errata in which it cannot clear the BSY bit after the PIO setup FIS. The dma state machine enters CMFatalErrorUpdate state and locks up. Si