[PATCH v3 2/2] ata: Fix the dma state machine lockup for the IDENTIFY DEVICE PIO mode command.
tj at kernel.org
Thu Jun 19 07:10:47 PDT 2014
On Thu, Jun 19, 2014 at 12:20:54PM +0530, Suman Tripathi wrote:
> + /*
> + * Restart the dma engine if the last cmd issued
> + * is IDENTIFY DEVICE command
> + */
> + if (unlikely(ctx->last_cmd[ap->port_no] == ATA_CMD_ID_ATA))
> + ahci_restart_engine(ap);
Is it really only for IDENTIFY? Are other PIO commands okay? The
previous version applied it to all PIO commands, right?
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