From: Arnd Bergmann <arnd@arndb.de>
Date: Thu, 3 Dec 2020 23:32:50 +0100
Subject: i2c: mlxbf: select CONFIG_I2C_SLAVE
Git-commit: c62dac0a35bb6d351cd568e97090c5fd3e7aa532
Patch-mainline: v5.10-rc7
References: jsc#SLE-15271 jsc#SLE-16108 jsc#SLE-16098 jsc#SLE-13565

If this is not enabled, the interfaces used in this driver do not work:

drivers/i2c/busses/i2c-mlxbf.c:1888:3: error: implicit declaration of function 'i2c_slave_event' [-Werror,-Wimplicit-function-declaration]
                i2c_slave_event(slave, I2C_SLAVE_WRITE_REQUESTED, &value);
                ^
drivers/i2c/busses/i2c-mlxbf.c:1888:26: error: use of undeclared identifier 'I2C_SLAVE_WRITE_REQUESTED'
                i2c_slave_event(slave, I2C_SLAVE_WRITE_REQUESTED, &value);
                                       ^
drivers/i2c/busses/i2c-mlxbf.c:1890:32: error: use of undeclared identifier 'I2C_SLAVE_WRITE_RECEIVED'
                ret = i2c_slave_event(slave, I2C_SLAVE_WRITE_RECEIVED,
                                             ^
drivers/i2c/busses/i2c-mlxbf.c:1892:26: error: use of undeclared identifier 'I2C_SLAVE_STOP'
                i2c_slave_event(slave, I2C_SLAVE_STOP, &value);
                                       ^

Fixes: b5b5b32081cd ("i2c: mlxbf: I2C SMBus driver for Mellanox BlueField SoC")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Khalil Blaiech <kblaiech@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
---
 drivers/i2c/busses/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index a97a9d058198..a49e0ed4a599 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -734,6 +734,7 @@ config I2C_LPC2K
 config I2C_MLXBF
         tristate "Mellanox BlueField I2C controller"
         depends on MELLANOX_PLATFORM && ARM64
+	select I2C_SLAVE
         help
           Enabling this option will add I2C SMBus support for Mellanox BlueField
           system.
-- 
2.30.0