[PATCH v2] iommu/mediatek: Fix crash on isr after kexec()

[AngeloGioacchino Del Regno]

Il 28/11/22 23:16, Ricardo Ribalda ha scritto:
> If the system is rebooted via isr(), the IRQ handler might be triggerd
> before the domain is initialized. Resulting on an invalid memory access
> error.
> 
> Fix:
> [    0.500930] Unable to handle kernel read from unreadable memory at virtual address 0000000000000070
> [    0.501166] Call trace:
> [    0.501174]  report_iommu_fault+0x28/0xfc
> [    0.501180]  mtk_iommu_isr+0x10c/0x1c0
> 
> Signed-off-by: Ricardo Ribalda <ribalda at chromium.org>
> Reviewed-by: Robin Murphy <robin.murphy at arm.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>