"index" needs to be signed for the error handling to work. I deleted a
little bit of obsolete cruft related to "index" and "start_index" as
well.
Fixes: 360eb3c5687e ('iommu/vt-d: use dedicated bitmap to track remapping entry
allocation status')
Signed-off-by: Dan Carpenter <[email protected]>
diff --git a/drivers/iommu/intel_irq_remapping.c
b/drivers/iommu/intel_irq_remapping.c
index 78fba6212ed2..ef5f65dbafe9 100644
--- a/drivers/iommu/intel_irq_remapping.c
+++ b/drivers/iommu/intel_irq_remapping.c
@@ -71,18 +71,13 @@ static int alloc_irte(struct intel_iommu *iommu, int irq,
u16 count)
struct ir_table *table = iommu->ir_table;
struct irq_2_iommu *irq_iommu = irq_2_iommu(irq);
struct irq_cfg *cfg = irq_get_chip_data(irq);
- u16 index, start_index;
unsigned int mask = 0;
unsigned long flags;
+ int index;
if (!count || !irq_iommu)
return -1;
- /*
- * start the IRTE search from index 0.
- */
- index = start_index = 0;
-
if (count > 1) {
count = __roundup_pow_of_two(count);
mask = ilog2(count);
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