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| author | Roland Dreier <rolandd@cisco.com> | 2009-06-14 13:30:45 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2009-06-14 13:30:45 -0700 |
| commit | d1fdf24b4074a8d962f9a28519c99dcdd66bdee3 (patch) | |
| tree | ad9a3b623b5f7a23811f68ae95e100119b037635 /drivers/net/mlx4 | |
| parent | 9aa0a489d909af0cc36c41d3061ef956c7442ce2 (diff) | |
| download | linux-3.10-d1fdf24b4074a8d962f9a28519c99dcdd66bdee3.tar.gz linux-3.10-d1fdf24b4074a8d962f9a28519c99dcdd66bdee3.tar.bz2 linux-3.10-d1fdf24b4074a8d962f9a28519c99dcdd66bdee3.zip | |
mlx4_core: 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. This is the same bug that was reported in ib_mthca by Yinghai
Lu <yhlu.kernel@gmail.com>.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/net/mlx4')
| -rw-r--r-- | drivers/net/mlx4/eq.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/mlx4/eq.c b/drivers/net/mlx4/eq.c index 8830dcb92ec..ce064e32420 100644 --- a/drivers/net/mlx4/eq.c +++ b/drivers/net/mlx4/eq.c @@ -497,8 +497,10 @@ static void mlx4_free_irqs(struct mlx4_dev *dev) if (eq_table->have_irq) free_irq(dev->pdev->irq, dev); for (i = 0; i < dev->caps.num_comp_vectors + 1; ++i) - if (eq_table->eq[i].have_irq) + if (eq_table->eq[i].have_irq) { free_irq(eq_table->eq[i].irq, eq_table->eq + i); + eq_table->eq[i].have_irq = 0; + } kfree(eq_table->irq_names); } |