[PATCH] firmware: arm_ffa: Allow the FF-A drivers to use 32bit mode of messaging

[Sudeep Holla]

On Fri, Oct 06, 2023 at 01:14:33PM +0200, Jens Wiklander wrote:
> Hi Sudeep,
> 
> On Thu, Oct 5, 2023 at 4:28 PM Sudeep Holla <sudeep.holla at arm.com> wrote:
> >
> > An FF-A ABI could support both the SMC32 and SMC64 conventions.
> > A callee that runs in the AArch64 execution state and implements such
> > an ABI must implement both SMC32 and SMC64 conventions of the ABI.
> >
> > So the FF-A drivers will need the option to choose the mode irrespective
> > of FF-A version and the partition execution mode flag in the partition
> > information.
> >
> > Let us remove the check on the FF-A version for allowing the selection
> > of 32bit mode of messaging. The driver will continue to set the 32-bit
> > mode if the partition execution mode flag specified that the partition
> > supports only 32-bit execution.
> >
> > Signed-off-by: Sudeep Holla <sudeep.holla at arm.com>
> > ---
> >  drivers/firmware/arm_ffa/driver.c | 12 ++----------
> >  1 file changed, 2 insertions(+), 10 deletions(-)
> >
> > Hi Jens,
> >
> > Based on our discussion in private, I am posting this patch. I am not marking
> > fixes tag as the driver version is not yet bumped in the mainline. But if you
> > think it is better to add, I can update when pulling in the change. Let me
> > know.
> 
> A fixes tag would be nice, to make sure that this patch isn't missed.
> 

Thanks I will add.

-- 
Regards,
Sudeep