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Tue, 15 Sep 2026 13:57:57 -0700 From: Zhi Wang To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Peter Colberg , Zhi Wang Subject: [PATCH 07/14] rust: pci: add num_vf(), to return number of VFs Date: Tue, 15 Sep 2026 23:56:51 +0300 Message-ID: <20260915205659.76841-8-zhiw@nvidia.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260915205659.76841-1-zhiw@nvidia.com> References: <20260915205659.76841-1-zhiw@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF000075F2:EE_|SA3PR12MB9159:EE_ X-MS-Office365-Filtering-Correlation-Id: cc6e966e-5dce-4f2c-fa20-08df136c179a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|36860700016|82310400026|376014|1800799024|7416014|56012099006|11063799006|10067099003|22082099003|18002099003|6133799003; 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Add a dead-code expectation because this standalone API commit has no in-tree caller. Signed-off-by: Peter Colberg Signed-off-by: Zhi Wang --- rust/kernel/pci.rs | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/rust/kernel/pci.rs b/rust/kernel/pci.rs index ed42511911d7..f2d71daef83a 100644 --- a/rust/kernel/pci.rs +++ b/rust/kernel/pci.rs @@ -523,6 +523,14 @@ pub(crate) fn is_virtfn(&self) -> bool { unsafe { (*self.as_raw()).is_virtfn() != 0 } } + /// Returns the number of Virtual Functions (VF) enabled for a Physical Function (PF). + #[cfg(CONFIG_PCI_IOV)] + #[expect(dead_code)] + pub(crate) fn num_vf(&self) -> i32 { + // SAFETY: `self.as_raw` is a valid pointer to a `struct pci_dev`. + unsafe { bindings::pci_num_vf(self.as_raw()) } + } + /// Returns the size of the given PCI BAR resource. pub fn resource_len(&self, bar: u32) -> Result { if !Bar::index_is_valid(bar) {