On Wed, Jul 6, 2022 at 3:34 AM Li zeming <zeming@xxxxxxxxxxxx> wrote: > > Add header file macro definition. Please explain why you want to make this change. > Signed-off-by: Li zeming <zeming@xxxxxxxxxxxx> > --- > drivers/acpi/sbshc.h | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/acpi/sbshc.h b/drivers/acpi/sbshc.h > index 695c390e2884..22b11a1655d2 100644 > --- a/drivers/acpi/sbshc.h > +++ b/drivers/acpi/sbshc.h > @@ -1,4 +1,7 @@ > /* SPDX-License-Identifier: GPL-2.0 */ > +#ifndef _SBSHC_H > +#define _SBSHC_H > + > struct acpi_smb_hc; > enum acpi_smb_protocol { > SMBUS_WRITE_QUICK = 2, > @@ -30,3 +33,4 @@ extern int acpi_smbus_write(struct acpi_smb_hc *hc, u8 protocol, u8 slave_addres > extern int acpi_smbus_register_callback(struct acpi_smb_hc *hc, > smbus_alarm_callback callback, void *context); > extern int acpi_smbus_unregister_callback(struct acpi_smb_hc *hc); > +#endif > -- > 2.18.2 >