i2c: Provide a stub for i2c_detect_slave_mode()

Drivers would like to call i2c_detect_slave_mode() even if !I2C_SLAVE. Give them what they want to, Otherwise kernel will not compile: drivers/i2c/busses/i2c-designware-platdrv.c: In function ‘dw_i2c_plat_probe’: drivers/i2c/busses/i2c-designware-platdrv.c:331:6: error: implicit declaration of function ‘i2c_detect_slave_mode’ [-Werror=implicit-function-declaration] if (i2c_detect_slave_mode(&pdev->dev)) ^~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors Fixes: 6e38cf3 ("i2c: designware: Let slave adapter support be optional") Reported-by: Abdul Haleem <[email protected]> Signed-off-by: Andy Shevchenko <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
jchandra-cavm · Jul 8, 2017 · 8f1a357 · 8f1a357
1 parent 6e38cf3
commit 8f1a357
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
@@ -295,6 +295,8 @@ static inline int i2c_slave_event(struct i2c_client *client,
 {
 	return client->slave_cb(client, event, val);
 }
+#else
+static inline bool i2c_detect_slave_mode(struct device *dev) { return false; }
 #endif
 
 /**