Re: [PATCH 03/10] media: microchip-isc: synchronize the IRQ before disabling clocks on stop

[Eugen Hristev]

On 6/16/26 14:50, Balakrishnan Sambath wrote:
> isc_stop_streaming() masks the DMA interrupt and then drops the runtime
> PM reference, which disables the ISC clocks. microchip_isc_interrupt()
> may still be executing on another CPU at that point; it reads ISC_INTSR
> over regmap, and touching the unclocked registers triggers an external
> abort.
> 
> Store the IRQ number at probe and call synchronize_irq() after masking
> the interrupt, before dropping the PM reference.
> 
> Fixes: 91b4e487b0c6 ("media: microchip: add ISC driver as Microchip ISC")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Balakrishnan Sambath <balakrishnan.s@xxxxxxxxxxxxx>

Reviewed-by: Eugen Hristev <ehristev@xxxxxxxxxx>