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irqchip: armada-370-xp: Fix releasing of MSIs

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Store the value of d->hwirq in a local variable as the real value is wiped out
by calling irq_dispose_mapping. Without this patch, the armada_370_xp_free_msi
function would always free MSI#0, no matter what was passed to it.

Fixes: 31f614edb7 ('irqchip: armada-370-xp: implement MSI support')
Cc: <stable@vger.kernel.org> # v3.13+
Signed-off-by: Neil Greatorex <neil@fatboyfat.co.uk>
Link: https://lkml.kernel.org/r/1397823593-1932-4-git-send-email-thomas.petazzoni@free-electrons.com
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1397823593-1932-4-git-send-email-thomas.petazzoni@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit is contained in:
Neil Greatorex 2014-04-18 14:19:49 +02:00 committed by Jason Cooper
parent 830cbe4b7a
commit ff3c664505
1 changed files with 3 additions and 1 deletions
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4
drivers/irqchip/irq-armada-370-xp.c
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@ -158,8 +158,10 @@ static void armada_370_xp_teardown_msi_irq(struct msi_chip *chip,
unsigned int irq)
{
struct irq_data *d = irq_get_irq_data(irq);
unsigned long hwirq = d->hwirq;
irq_dispose_mapping(irq);
armada_370_xp_free_msi(d->hwirq);
armada_370_xp_free_msi(hwirq);
}
static int armada_370_xp_check_msi_device(struct msi_chip *chip, struct pci_dev *dev,