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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2018-03-22 16:22:42 +0100
committerJoerg Roedel <jroedel@suse.de>2018-03-29 10:38:17 +0200
commit29d049be9438278c47253a74cf8d0ddf36bd5d68 (patch)
treef793b2c78101d960183bca9fdb8e6f4a2b373a5b /drivers/iommu
parent2cd1083d79a0a8c223af430ca97884c28a1e2fc0 (diff)
downloadlinux-29d049be9438278c47253a74cf8d0ddf36bd5d68.tar.bz2
iommu/amd: Return proper error code in irq_remapping_alloc()
In the unlikely case when alloc_irq_table() is not able to return a remap table then "ret" will be assigned with an error code. Later, the code checks `index' and if it is negative (which it is because it is initialized with `-1') and then then function properly aborts but returns `-1' instead `-ENOMEM' what was intended. In order to correct this, I assign -ENOMEM to index. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/amd_iommu.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 23e26a4b708e..6107e24bed8a 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -4124,7 +4124,7 @@ static int irq_remapping_alloc(struct irq_domain *domain, unsigned int virq,
struct amd_ir_data *data = NULL;
struct irq_cfg *cfg;
int i, ret, devid;
- int index = -1;
+ int index;
if (!info)
return -EINVAL;
@@ -4166,7 +4166,7 @@ static int irq_remapping_alloc(struct irq_domain *domain, unsigned int virq,
WARN_ON(table->min_index != 32);
index = info->ioapic_pin;
} else {
- ret = -ENOMEM;
+ index = -ENOMEM;
}
} else {
bool align = (info->type == X86_IRQ_ALLOC_TYPE_MSI);