linux-kernel - [PATCH v6 2/5] ACPI / OSL: Stub out acpi_os_read_pci_configuration when CONFIG

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Date:   Wed, 12 Dec 2018 17:19:37 +0000
From:   Sinan Kaya <okaya@...nel.org>
To:     linux-acpi@...r.kernel.org
Cc:     Sinan Kaya <okaya@...nel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v6 2/5] ACPI / OSL: Stub out acpi_os_read_pci_configuration when CONFIG_PCI is unset

Getting ready to allow CONFIG_PCI to be disabled with ACPI enabled. Stub
out acpi_os_read_pci_configuration function that depend on PCI.

Signed-off-by: Sinan Kaya <okaya@...nel.org>
---
 drivers/acpi/osl.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index b48874b8e1ea..fb92b8a0ad31 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -773,6 +773,7 @@ acpi_status
 acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg,
 			       u64 *value, u32 width)
 {
+#ifdef CONFIG_PCI
 	int result, size;
 	u32 value32;
 
@@ -799,6 +800,12 @@ acpi_os_read_pci_configuration(struct acpi_pci_id * pci_id, u32 reg,
 	*value = value32;
 
 	return (result ? AE_ERROR : AE_OK);
+#else
+	int rc;
+
+	rc = pr_warn_once("PCI configuration space access is not supported\n");
+	return rc ? AE_SUPPORT : AE_OK;
+#endif
 }
 
 acpi_status
-- 
2.19.0