Re: [LINUX PATCH 2/3] spi: spi-mem: call spi_mem_default_supports_op() first

From: Vignesh Raghavendra
Date: Fri Mar 29 2019 - 07:01:18 EST


Hi Naga Sureshkumar

On 29/03/19 1:25 AM, Boris Brezillon wrote:
> On Thu, 28 Mar 2019 16:46:24 +0530
> Naga Sureshkumar Relli <naga.sureshkumar.relli@xxxxxxxxxx> wrote:
>
>> Call spi_mem_default_supports_op() first, before calling controller
>> specific ctlr->supports_op().
>> With this, controller drivers can drop checking the buswidths again.
>
> No, this was done on purpose, in case the controller does not want the
> default check to be applied (say it does not need bus-width props to
> be defined and has another way to check if a device can be accessed in
> dual, quad or octal mode).
> Just call spi_mem_default_supports_op() from your driver
> ->supports_op() hook if needed.
>

Could you rework to follow Boris's suggestion here?

>>
>> Suggested-by: Vignesh Raghavendra <vigneshr@xxxxxx>
>> Signed-off-by: Naga Sureshkumar Relli <naga.sureshkumar.relli@xxxxxxxxxx>
>> ---
>> Details can be found at https://lkml.org/lkml/2019/3/1/183
>> ---
>> drivers/spi/spi-mem.c | 7 +++++--
>> 1 file changed, 5 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c
>> index 5217a56..56aa158 100644
>> --- a/drivers/spi/spi-mem.c
>> +++ b/drivers/spi/spi-mem.c
>> @@ -189,11 +189,14 @@ static bool spi_mem_internal_supports_op(struct spi_mem *mem,
>> const struct spi_mem_op *op)
>> {
>> struct spi_controller *ctlr = mem->spi->controller;
>> + bool ret;
>> +
>> + ret = spi_mem_default_supports_op(mem, op);
>>
>> if (ctlr->mem_ops && ctlr->mem_ops->supports_op)
>> - return ctlr->mem_ops->supports_op(mem, op);
>> + ret = ctlr->mem_ops->supports_op(mem, op);
>>
>> - return spi_mem_default_supports_op(mem, op);
>> + return ret;
>> }
>>
>> /**
>

--
Regards
Vignesh