From 3c765399524308ab36777a443ce77e19810a97d7 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Fri, 17 Jul 2015 15:30:26 -0500 Subject: [PATCH] PCI: Rationalize pci_ats_queue_depth() error checking We previously returned -ENODEV for devices that don't support ATS (except that we always returned 0 for VFs, whether or not they support ATS). For consistency, always return -EINVAL (not -ENODEV) if the device doesn't support ATS. Return zero for VFs that support ATS. Signed-off-by: Bjorn Helgaas Reviewed-by: Joerg Roedel --- drivers/pci/ats.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/pci/ats.c b/drivers/pci/ats.c index 690ae6e6786c..9a98b3a4f983 100644 --- a/drivers/pci/ats.c +++ b/drivers/pci/ats.c @@ -136,13 +136,13 @@ EXPORT_SYMBOL_GPL(pci_restore_ats_state); */ int pci_ats_queue_depth(struct pci_dev *dev) { + if (!dev->ats_cap) + return -EINVAL; + if (dev->is_virtfn) return 0; - if (dev->ats_cap) - return dev->ats_qdep; - - return -ENODEV; + return dev->ats_qdep; } EXPORT_SYMBOL_GPL(pci_ats_queue_depth); -- 2.20.1