RE: PATCH] mmc: block: ioctl: Poll for TRAN if possible

[Avri Altman]

> Poll for TRAN state if the ioctl command will eventually return to TRAN
> 
> The ioctl submitted command should not be considered completed until
> the card has returned back to TRAN state. Waiting just for the card
> to no longer signal busy is not enough as they might remain in a
> non-busy PROG state for a while after the command.
> Further commands requiring TRAN will fail then.
> It should not be the responsibility of the user to check if their command
> has completed until sending the next via ioctl,
> instead the check should be made here.
> So now, in doubt, wait for TRAN except for the few commands that will
> never return to TRAN state.
Is this theoretical, or do you have an exact scenario in which the polling with cmd13 isn't enough?

Thanks,
Avri