i2c: mv64xxx: Fix some build warnings

Some functions and variables are only used if the configuration selects
HAVE_CLK. Protect them with a corresponding #ifdef CONFIG_HAVE_CLK block
to avoid compiler warnings.

Signed-off-by: Thierry Reding <treding@nvidia.com>
[wsa: added marker to #endif]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index 7f3a4744349476f941a4500c9edc6a65a6da0fe2..52c694363b27558fe3c7e75158d46329701b0325 100644 (file)
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -697,6 +697,7 @@ static const struct of_device_id mv64xxx_i2c_of_match_table[] = {
 MODULE_DEVICE_TABLE(of, mv64xxx_i2c_of_match_table);
 
 #ifdef CONFIG_OF
+#ifdef CONFIG_HAVE_CLK
 static int
 mv64xxx_calc_freq(const int tclk, const int n, const int m)
 {
@@ -726,16 +727,12 @@ mv64xxx_find_baud_factors(const u32 req_freq, const u32 tclk, u32 *best_n,
                return false;
        return true;
 }
+#endif /* CONFIG_HAVE_CLK */
 
 static int
 mv64xxx_of_config(struct mv64xxx_i2c_data *drv_data,
                  struct device *dev)
 {
-       const struct of_device_id *device;
-       struct device_node *np = dev->of_node;
-       u32 bus_freq, tclk;
-       int rc = 0;
-
        /* CLK is mandatory when using DT to describe the i2c bus. We
         * need to know tclk in order to calculate bus clock
         * factors.
@@ -744,6 +741,11 @@ mv64xxx_of_config(struct mv64xxx_i2c_data *drv_data,
        /* Have OF but no CLK */
        return -ENODEV;
 #else
+       const struct of_device_id *device;
+       struct device_node *np = dev->of_node;
+       u32 bus_freq, tclk;
+       int rc = 0;
+
        if (IS_ERR(drv_data->clk)) {
                rc = -ENODEV;
                goto out;