[PATCH_v2 2/3] clk: clocking-wizard: optimize clock search

[Colin Foster <colin.foster@in-advantage.com>]

When an exact clock match is found, there is no need to continue
searching. This process was optimized for versal as part of
'commit e0a94c6bb5b4 ("clk: xilinx: Optimize divisor search in
clk_wzrd_get_divisors_ver()")' but that logic wasn't applied to
the non-versal driver.

Apply this fast-exit logic to the non-versal driver.

Reviewed-by: Shubhrajyoti Datta <shubhrajyoti.datta@amd.com>
Reviewed-by: Brian Masney <bmasney@redhat.com>
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
---
 drivers/clk/xilinx/clk-xlnx-clock-wizard.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/clk/xilinx/clk-xlnx-clock-wizard.c b/drivers/clk/xilinx/clk-xlnx-clock-wizard.c
index 77c9d025ca8cf..c7e8010afae52 100644
--- a/drivers/clk/xilinx/clk-xlnx-clock-wizard.c
+++ b/drivers/clk/xilinx/clk-xlnx-clock-wizard.c
@@ -414,6 +414,9 @@ static int clk_wzrd_get_divisors(struct clk_hw *hw, unsigned long rate,
 				divider->d = d;
 				divider->o = o >> 3;
 				divider->o_frac = (o - (divider->o << 3)) * 125;
+
+				if (!diff)
+					return 0;
 			}
 		}
 	}
-- 
2.43.0