From: Roland Dreier Date: Sat, 13 Jun 2009 22:14:09 +0000 (-0700) Subject: IB/mthca: Don't double-free IRQs when falling back from MSI-X to INTx X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9aa0a489d909af0cc36c41d3061ef956c7442ce2;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git 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 Tested-by: Yinghai Lu Signed-off-by: Roland Dreier --- 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,