Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 4c8bb609 authored by Igor Russkikh's avatar Igor Russkikh Committed by David S. Miller
Browse files

net: aquantia: Limit number of MSIX irqs to the number of cpus 



There is no much practical use from having MSIX vectors more that number
of cpus, thus cap this first with preconfigured limit, then with number
of cpus online.

Signed-off-by: default avatarPavel Belous <pavel.belous@aquantia.com>
Signed-off-by: default avatarIgor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 93d87b8f

drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c

+7 −4
Original line number Diff line number Diff line
@@ -85,6 +85,7 @@ int aq_pci_func_init(struct aq_pci_func_s *self) 
	int err = 0;

	unsigned int bar = 0U;

	unsigned int port = 0U;

	unsigned int numvecs = 0U;



	err = pci_enable_device(self->pdev);

	if (err < 0)
@@ -142,10 +143,12 @@ int aq_pci_func_init(struct aq_pci_func_s *self) 
		}

	}



	numvecs = min((u8)AQ_CFG_VECS_DEF, self->aq_hw_caps.msix_irqs);

	numvecs = min(numvecs, num_online_cpus());



	/* enable interrupts */

#if !AQ_CFG_FORCE_LEGACY_INT

	err = pci_alloc_irq_vectors(self->pdev, self->aq_hw_caps.msix_irqs,

			      self->aq_hw_caps.msix_irqs, PCI_IRQ_MSIX);

	err = pci_alloc_irq_vectors(self->pdev, numvecs, numvecs, PCI_IRQ_MSIX);



	if (err < 0) {

		err = pci_alloc_irq_vectors(self->pdev, 1, 1,
@@ -153,7 +156,7 @@ int aq_pci_func_init(struct aq_pci_func_s *self) 
		if (err < 0)

			goto err_exit;

	}

#endif

#endif /* AQ_CFG_FORCE_LEGACY_INT */



	/* net device init */

	for (port = 0; port < self->ports; ++port) {