linux-kernel - [PATCH v7 3/5] ACPI / OSL: Stub out acpi_os_write_pci_configuration when CONFIG

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Message-Id: <20181213044833.23952-4-okaya@kernel.org>
Date:   Thu, 13 Dec 2018 04:48:31 +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 v7 3/5] ACPI / OSL: Stub out acpi_os_write_pci_configuration when CONFIG_PCI is unset

Getting ready to allow CONFIG_PCI to be disabled with ACPI enabled. Stub
out acpi_os_write_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 fb92b8a0ad31..524fd5f33ea4 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -812,6 +812,7 @@ acpi_status
 acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg,
 				u64 value, u32 width)
 {
+#ifdef CONFIG_PCI
 	int result, size;
 
 	switch (width) {
@@ -833,6 +834,12 @@ acpi_os_write_pci_configuration(struct acpi_pci_id * pci_id, u32 reg,
 				reg, size, value);
 
 	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
 }
 
 static void acpi_os_execute_deferred(struct work_struct *work)
-- 
2.19.0