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Wysocki" , Len Brown , Bjorn Helgaas , Anup Patel , Thomas Gleixner , Greg Kroah-Hartman , Jiri Slaby , Conor Dooley , Andrew Jones , Atish Kumar Patra , Haibo Xu , Sunil V L Subject: [RFC PATCH v2 05/21] pnp.h: Return -EPROBE_DEFER for disabled IRQ resource in pnp_irq() Date: Thu, 26 Oct 2023 01:53:28 +0530 Message-Id: <20231025202344.581132-6-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231025202344.581132-1-sunilvl@ventanamicro.com> References: <20231025202344.581132-1-sunilvl@ventanamicro.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231025_132440_268039_AD8F0535 X-CRM114-Status: GOOD ( 13.92 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org To support deferred PNP driver probe, pnp_irq() must return -EPROBE_DEFER so that the device driver can do deferred probe if the interrupt controller is not probed early. Signed-off-by: Sunil V L --- include/linux/pnp.h | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/include/linux/pnp.h b/include/linux/pnp.h index c2a7cfbca713..21cf833789fb 100644 --- a/include/linux/pnp.h +++ b/include/linux/pnp.h @@ -147,12 +147,18 @@ static inline resource_size_t pnp_mem_len(struct pnp_dev *dev, } -static inline resource_size_t pnp_irq(struct pnp_dev *dev, unsigned int bar) +static inline int pnp_irq(struct pnp_dev *dev, unsigned int bar) { struct resource *res = pnp_get_resource(dev, IORESOURCE_IRQ, bar); - if (pnp_resource_valid(res)) + if (pnp_resource_valid(res)) { +#if IS_ENABLED(CONFIG_ARCH_ACPI_DEFERRED_GSI) + if (!pnp_resource_enabled(res)) + return -EPROBE_DEFER; +#endif + return res->start; + } return -1; } -- 2.39.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel