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authorRoland Dreier <rolandd@cisco.com>2009-06-13 15:14:09 -0700
committerRoland Dreier <rolandd@cisco.com>2009-06-13 15:14:09 -0700
commit9aa0a489d909af0cc36c41d3061ef956c7442ce2 (patch)
treee973b5748c54060325ba1dd90ab0ce8ccdc66195
parentc1f67a88bf62fac0f4151c007b361199c2cd1988 (diff)
IB/mthca: Don't double-free IRQs when falling back from MSI-X to INTx
When both MSI-X and legacy INTx fail to generate an interrupt, the driver frees the MSI-X interrupts twice. Fix this by clearing the have_irq flag for the MSI-X interrupts when they are freed the first time. Reported-by: Yinghai Lu <yhlu.kernel@gmail.com> Tested-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
-rw-r--r--drivers/infiniband/hw/mthca/mthca_eq.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_eq.c b/drivers/infiniband/hw/mthca/mthca_eq.c
index 28f0e0c40d7..90e4e450a12 100644
--- a/drivers/infiniband/hw/mthca/mthca_eq.c
+++ b/drivers/infiniband/hw/mthca/mthca_eq.c
@@ -641,9 +641,11 @@ static void mthca_free_irqs(struct mthca_dev *dev)
if (dev->eq_table.have_irq)
free_irq(dev->pdev->irq, dev);
for (i = 0; i < MTHCA_NUM_EQ; ++i)
- if (dev->eq_table.eq[i].have_irq)
+ if (dev->eq_table.eq[i].have_irq) {
free_irq(dev->eq_table.eq[i].msi_x_vector,
dev->eq_table.eq + i);
+ dev->eq_table.eq[i].have_irq = 0;
+ }
}
static int mthca_map_reg(struct mthca_dev *dev,