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Subject[PATCH][next][V2] iommu/mediatek: Fix unsigned domid comparison with less than zero
Date
From: Colin Ian King <colin.king@canonical.com>

Currently the check for domid < 0 is always false because domid
is unsigned. Fix this by casting domid to an int before making
the comparison.

Addresses-Coverity: ("Unsigned comparison against 0")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---

V2: cast domid rather than making it an int. Replace L with : in
the commit message.

---
drivers/iommu/mtk_iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 0ad14a7604b1..1f262621ef19 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -645,7 +645,7 @@ static void mtk_iommu_get_resv_regions(struct device *dev,
struct iommu_resv_region *region;
int prot = IOMMU_WRITE | IOMMU_READ;

- if (domid < 0)
+ if ((int)domid < 0)
return;
curdom = data->plat_data->iova_region + domid;
for (i = 0; i < data->plat_data->iova_region_nr; i++) {
--
2.29.2
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