Re: [PATCH 2/2] irqchip: irq-qcom-mpm: Support passing a slice of SRAM as reg space

Konrad Dybcio
2023-03-30T11:18:59Z

On 30.03.2023 03:50, Shawn Guo wrote:
> On Wed, Mar 29, 2023 at 03:30:12PM +0200, Konrad Dybcio wrote:
>>> Otherwise, I do not understand why devm_ioremap_resource() cannot be
>>> used.
>> drivers/rpmsg/qcom_glink_rpm.c calls devm_ioremap on the entire
>> RPM MSG RAM.
>
> qcom_glink_rpm driver remaps the entire RPM MSG RAM, but it doesn't seem
> to request any region. So MPM can still call devm_ioremap_resource() on
> its slice, no?
FWIW, I did get a 'can't request resource error'.

Konrad
>
> Shawn