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Revert "rt2800pci: handle spurious interrupts"

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This reverts commit 4ba7d99978.

The original patch was a misguided attempt to improve performance on
some hardware that is apparently prone to spurious interrupt generation.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
John W. Linville 2011-11-22 16:38:19 -05:00
parent 6cccccafe9
commit 82e5fc2a34
1 changed files with 1 additions and 6 deletions
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7
drivers/net/wireless/rt2x00/rt2800pci.c
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@ -880,13 +880,8 @@ static irqreturn_t rt2800pci_interrupt(int irq, void *dev_instance)
rt2x00pci_register_read(rt2x00dev, INT_SOURCE_CSR, &reg); rt2x00pci_register_read(rt2x00dev, INT_SOURCE_CSR, &reg);
rt2x00pci_register_write(rt2x00dev, INT_SOURCE_CSR, reg); rt2x00pci_register_write(rt2x00dev, INT_SOURCE_CSR, reg);
/*
* Some devices can generate interrupts with empty CSR register, we
* "handle" such irq's to prevent interrupt controller treat them as
* spurious interrupts and disable irq line.
*/
if (!reg) if (!reg)
return IRQ_HANDLED; return IRQ_NONE;
if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
return IRQ_HANDLED; return IRQ_HANDLED;