iommu/qcom: Fix pgsize_bitmap

qcom uses the ARM_32_LPAE_S1 format which uses the ARM long descriptor
page table. Eventually arm_32_lpae_alloc_pgtable_s1() will adjust
the pgsize_bitmap with:

	cfg->pgsize_bitmap &= (SZ_4K | SZ_2M | SZ_1G);

So the current declaration is nonsensical. Fix it to be just SZ_4K which
is what it has actually been using so far. Most likely the qcom driver
copy and pasted the pgsize_bitmap from something using the ARM_V7S format.

Fixes: db64591 ("iommu/qcom: Remove iommu_ops pgsize_bitmap")
Reported-by: Naresh Kamboju <[email protected]>
Closes: https://lore.kernel.org/all/CA+G9fYvif6kDDFar5ZK4Dff3XThSrhaZaJundjQYujaJW978yg@mail.gmail.com/
Tested-by: Linux Kernel Functional Testing <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
Reviewed-by: Konrad Dybcio <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>

Author: jgunthorpe

drivers/iommu/arm/arm-smmu/qcom_iommu.c

@@ -335,7 +335,7 @@ static struct iommu_domain *qcom_iommu_domain_alloc_paging(struct device *dev)
 
 	mutex_init(&qcom_domain->init_mutex);
 	spin_lock_init(&qcom_domain->pgtbl_lock);
-	qcom_domain->domain.pgsize_bitmap = SZ_4K | SZ_64K | SZ_1M | SZ_16M;
+	qcom_domain->domain.pgsize_bitmap = SZ_4K;
 
 	return &qcom_domain->domain;
 }