[PATCH v3 4/4] ACPI: platform: Move SMB0001 HID to the header and reuse

From: Andy Shevchenko
Date: Mon Jun 26 2023 - 07:01:16 EST


There are at least two places in the kernel that are using
the SMB0001 HID. Make it to be available via acpi_drivers.h
header file. While at it, replace hard coded one with a
definition.

Reviewed-by: Andi Shyti <andi.shyti@xxxxxxxxxx>
Acked-by: Wolfram Sang <wsa@xxxxxxxxxx> # for I2C
Link: https://lore.kernel.org/r/20230621151652.79579-2-andriy.shevchenko@xxxxxxxxxxxxxxx
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/acpi/acpi_platform.c | 2 +-
drivers/i2c/busses/i2c-scmi.c | 3 ---
include/acpi/acpi_drivers.h | 2 ++
3 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c
index ee6ea1ee8396..b5e32257fa3e 100644
--- a/drivers/acpi/acpi_platform.c
+++ b/drivers/acpi/acpi_platform.c
@@ -29,7 +29,7 @@ static const struct acpi_device_id forbidden_id_list[] = {
{"PNP0000", 0}, /* PIC */
{"PNP0100", 0}, /* Timer */
{"PNP0200", 0}, /* AT DMA Controller */
- {"SMB0001", ACPI_ALLOW_WO_RESOURCES}, /* ACPI SMBUS virtual device */
+ {ACPI_SMBUS_MS_HID, ACPI_ALLOW_WO_RESOURCES}, /* ACPI SMBUS virtual device */
{ }
};

diff --git a/drivers/i2c/busses/i2c-scmi.c b/drivers/i2c/busses/i2c-scmi.c
index 104570292241..421735acfa14 100644
--- a/drivers/i2c/busses/i2c-scmi.c
+++ b/drivers/i2c/busses/i2c-scmi.c
@@ -13,9 +13,6 @@
#include <linux/i2c.h>
#include <linux/acpi.h>

-/* SMBUS HID definition as supported by Microsoft Windows */
-#define ACPI_SMBUS_MS_HID "SMB0001"
-
struct smbus_methods_t {
char *mt_info;
char *mt_sbr;
diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h
index 8372b0e7fd15..b14d165632e7 100644
--- a/include/acpi/acpi_drivers.h
+++ b/include/acpi/acpi_drivers.h
@@ -27,6 +27,8 @@
#define ACPI_BAY_HID "LNXIOBAY"
#define ACPI_DOCK_HID "LNXDOCK"
#define ACPI_ECDT_HID "LNXEC"
+/* SMBUS HID definition as supported by Microsoft Windows */
+#define ACPI_SMBUS_MS_HID "SMB0001"
/* Quirk for broken IBM BIOSes */
#define ACPI_SMBUS_IBM_HID "SMBUSIBM"

--
2.40.0.1.gaa8946217a0b