lkml.org 
[lkml]   [2018]   [Mar]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 10/10] iommu/amd: return proper error code in irq_remapping_alloc()
Date
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>
---
drivers/iommu/amd_iommu.c | 4 ++--
1 file 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);
--
2.16.2
\
 
 \ /
  Last update: 2018-03-22 16:24    [W:0.188 / U:0.104 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site