Re: [PATCH v4 2/2] ufs: core: requeue aborted request

On 9/12/24 6:31 AM, Peter Wang (王信友) wrote:

in SDB mode: ufshcd_utrl_clear set UTRLC, Mediatek host controller (may not all host controller) will post response with OCS ABORTED.

In both cases, we have an interrupt sent to the host, and there may be a race condition before we set this flag for requeue. So I need to set this flag before ufshcd_clear_cmd.

If a completion interrupt is sent to the host if a command has been cleared in SDB mode (I doubt this is what happens), I think that's a severe controller bug. A UFSHCI controller is not allowed to send a completion interrupt to the host if a command is cleared by writing into the UTRLCLR register.

Thanks,

Bart.