Commit 41ee7232 authored by Alexey Kardashevskiy's avatar Alexey Kardashevskiy Committed by Michael Ellerman
Browse files

powerpc/pseries/iommu: Use correct vfree for it_map 



The it_map array is vzalloc'ed so use vfree() for it when creating
a huge DMA window failed for whatever reason.

While at this, write zero to it_map.

Fixes: 381ceda8 ("powerpc/pseries/iommu: Make use of DDW for indirect mapping")
Signed-off-by: default avatarAlexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211020132315.2287178-3-aik@ozlabs.ru
parent 787252a1

arch/powerpc/platforms/pseries/iommu.c

+2 −1
Original line number Diff line number Diff line
@@ -1440,7 +1440,8 @@ static bool enable_ddw(struct pci_dev *dev, struct device_node *pdn) 
		/* Keep default DMA window stuct if removed */

		if (default_win_removed) {

			tbl->it_size = 0;

			kfree(tbl->it_map);

			vfree(tbl->it_map);

			tbl->it_map = NULL;

		}



		set_iommu_table_base(&dev->dev, newtbl);