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Commit f47cf66e authored by Jesse Brandeburg's avatar Jesse Brandeburg Committed by Jeff Garzik
Browse files

ixgbe: fix bug with shared interrupts 



fix ixgbe bug reported with shared legacy interrupts

Signed-off-by: default avatarJesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent 41fb9248

drivers/net/ixgbe/ixgbe_main.c

+6 −1
Original line number Original line Diff line number Diff line
@@ -1245,8 +1245,13 @@ static irqreturn_t ixgbe_intr(int irq, void *data) 
	/* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read

	/* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read

	 * therefore no explict interrupt disable is necessary */

	 * therefore no explict interrupt disable is necessary */

	eicr = IXGBE_READ_REG(hw, IXGBE_EICR);

	eicr = IXGBE_READ_REG(hw, IXGBE_EICR);

	if (!eicr)

	if (!eicr) {

		/* shared interrupt alert!

		 * make sure interrupts are enabled because the read will

		 * have disabled interrupts due to EIAM */

		ixgbe_irq_enable(adapter);

		return IRQ_NONE;	/* Not our interrupt */

		return IRQ_NONE;	/* Not our interrupt */

	}





	if (eicr & IXGBE_EICR_LSC)

	if (eicr & IXGBE_EICR_LSC)

		ixgbe_check_lsc(adapter);

		ixgbe_check_lsc(adapter);