[PATCH v4] clk: Show correct information when fail to set clock rate

[Chanwoo Choi]

This patch shows the correct information for debugging when fail to set clock
rate because original error message shows the error value instead of current
clock rate.

Cc: Mike Turquette <mturquette@xxxxxxxxxx>
Cc: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
Cc: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
---
Changes from v3:
- Show the correct information (clock rate, error value, current clock rate
  after fail to set clock rate)
Changes from v2:
- Show the current clock rate when fail to set clock rate
Changes from v1:
- Add error value of clk_set_rate() with current clock rate

 drivers/clk/clk-conf.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/clk-conf.c b/drivers/clk/clk-conf.c
index 48a65b2..000692b 100644
--- a/drivers/clk/clk-conf.c
+++ b/drivers/clk/clk-conf.c
@@ -106,8 +106,8 @@ static int __set_clk_rates(struct device_node *node, bool clk_supplier)
 
 			rc = clk_set_rate(clk, rate);
 			if (rc < 0)
-				pr_err("clk: couldn't set %s clock rate: %d\n",
-				       __clk_get_name(clk), rc);
+				pr_err("clk: couldn't set %s clk rate to %d (%d), current rate: %ld\n",
+				       __clk_get_name(clk), rate, rc, clk_get_rate(clk));
 			clk_put(clk);
 		}
 		index++;
-- 
1.8.5.5

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