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Commit 0a62f1a6 authored by Ben Hutchings's avatar Ben Hutchings Committed by Jeff Garzik
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sfc: Disable interrupts after a fatal interrupt occurs until reset 



This should avoid an interrupt storm, which has been observed in the
field with one faulty board.

Signed-off-by: default avatarBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent 1d0680fd

drivers/net/sfc/falcon.c

+2 −1
Original line number Diff line number Diff line
@@ -1374,10 +1374,11 @@ static irqreturn_t falcon_fatal_interrupt(struct efx_nic *efx) 
			EFX_OWORD_FMT "\n", EFX_OWORD_VAL(reg));

	}



	/* Disable DMA bus mastering on both devices */

	/* Disable both devices */

	pci_disable_device(efx->pci_dev);

	if (FALCON_IS_DUAL_FUNC(efx))

		pci_disable_device(nic_data->pci_dev2);

	falcon_disable_interrupts(efx);



	if (++n_int_errors < FALCON_MAX_INT_ERRORS) {

		EFX_ERR(efx, "SYSTEM ERROR - reset scheduled\n");