Re: [RFC v3 01/45] powerpc: dma-mapping: Don't hard-code the value of DMA_ATTR_WEAK_ORDERING

From
Krzysztof Kozlowski <hidden>
Date
2016-06-03 07:55:58
Also in
linux-iommu, linux-mips
Reply to
Krzysztof Kozlowski, 2016-06-02
On 06/02/2016 05:39 PM, Krzysztof Kozlowski wrote:
quoted hunk ↗ jump to hunk
Hard-coded value of DMA_ATTR_WEAK_ORDERING is then compared with the
symbol.  This will stop matching if the value of symbol is changed (when
switching DMA attributes to unsigned long).

Signed-off-by: Krzysztof Kozlowski <redacted>
---
 arch/powerpc/platforms/cell/iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
index 14a582b21274..0c2794d2b6c0 100644
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -1162,7 +1162,7 @@ static int __init setup_iommu_fixed(char *str)
 	pciep = of_find_node_by_type(NULL, "pcie-endpoint");
 
 	if (strcmp(str, "weak") == 0 || (pciep && strcmp(str, "strong") != 0))
-		iommu_fixed_is_weak = 1;
+		iommu_fixed_is_weak = DMA_ATTR_WEAK_ORDERING;
After some more thoughts given to this, I think my fix is not correct.
The 'iommu_fixed_is_weak' stores the bool and it is used to compare with
result of test_bit().

Please ignore this patch.

Best regards,
Krzysztof
Thread (53 messages) 53 messages, 5 authors, last reply 2016-06-07
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