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05 April 2024, 19:05:47 UTC
Revision fbedd9b9905c1643b9f7244d88999e39632bbd87 authored by John Keeping on 05 April 2016, 14:05:46 UTC, committed by Joerg Roedel on 07 April 2016, 12:50:18 UTC 
iommu/rockchip: Fix "is stall active" check
 
Since commit cd6438c5f844 ("iommu/rockchip: Reconstruct to support multi
slaves") rk_iommu_is_stall_active() always returns false because the
bitwise AND operates on the boolean flag promoted to an integer and a
value that is either zero or BIT(2).

Explicitly convert the right-hand value to a boolean so that both sides
are guaranteed to be either zero or one.

rk_iommu_is_paging_enabled() does not suffer from the same problem since
RK_MMU_STATUS_PAGING_ENABLED is BIT(0), but let's apply the same change
for consistency and to make it clear that it's correct without needing
to lookup the value.

Fixes: cd6438c5f844 ("iommu/rockchip: Reconstruct to support multi slaves")
Signed-off-by: John Keeping <john@metanate.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
1 parent eebb803
History
Tip revision: fbedd9b9905c1643b9f7244d88999e39632bbd87 authored by John Keeping on 05 April 2016, 14:05:46 UTC
iommu/rockchip: Fix "is stall active" check
Tip revision: fbedd9b
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