linux-kernel - [PATCH v2] clk:sophgo: Remove uninitialized variable for CV1800 PLL

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Message-ID: <20241114210115.29766-1-ragavendra.bn@gmail.com>
Date: Thu, 14 Nov 2024 13:01:15 -0800
From: Ragavendra <ragavendra.bn@...il.com>
To: unicorn_wang@...look.com,
	mturquette@...libre.com,
	sboyd@...nel.org,
	inochiama@...look.com
Cc: linux-clk@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Ragavendra <ragavendra.bn@...il.com>
Subject: [PATCH v2] clk:sophgo: Remove uninitialized variable for CV1800 PLL

Updating the detected value to 0 in the ipll_find_rate and removing it
from the method parameters as it does not depend on external input.
Updating the calls to ipll_find_rate as well and removing the u32 val
variable from ipll_determine_rate.

Fixes: 80fd61ec4612 ("clk: sophgo: Add clock support for CV1800 SoC")
Signed-off-by: Ragavendra Nagraj <ragavendra.bn@...il.com>
---
V1 -> V2: Updated commit log, title and addressed review comments
---
 drivers/clk/sophgo/clk-cv18xx-pll.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/clk/sophgo/clk-cv18xx-pll.c b/drivers/clk/sophgo/clk-cv18xx-pll.c
index 29e24098bf5f..350195d4ac46 100644
--- a/drivers/clk/sophgo/clk-cv18xx-pll.c
+++ b/drivers/clk/sophgo/clk-cv18xx-pll.c
@@ -45,14 +45,13 @@ static unsigned long ipll_recalc_rate(struct clk_hw *hw,
 }
 
 static int ipll_find_rate(const struct cv1800_clk_pll_limit *limit,
-			  unsigned long prate, unsigned long *rate,
-			  u32 *value)
+			  unsigned long prate, unsigned long *rate)
 {
 	unsigned long best_rate = 0;
 	unsigned long trate = *rate;
 	unsigned long pre_div_sel = 0, div_sel = 0, post_div_sel = 0;
 	unsigned long pre, div, post;
-	u32 detected = *value;
+	u32 detected = 0;
 	unsigned long tmp;
 
 	for_each_pll_limit_range(pre, &limit->pre_div) {
@@ -77,7 +76,6 @@ static int ipll_find_rate(const struct cv1800_clk_pll_limit *limit,
 		detected = PLL_SET_PRE_DIV_SEL(detected, pre_div_sel);
 		detected = PLL_SET_POST_DIV_SEL(detected, post_div_sel);
 		detected = PLL_SET_DIV_SEL(detected, div_sel);
-		*value = detected;
 		*rate = best_rate;
 		return 0;
 	}
@@ -87,11 +85,10 @@ static int ipll_find_rate(const struct cv1800_clk_pll_limit *limit,
 
 static int ipll_determine_rate(struct clk_hw *hw, struct clk_rate_request *req)
 {
-	u32 val;
 	struct cv1800_clk_pll *pll = hw_to_cv1800_clk_pll(hw);
 
 	return ipll_find_rate(pll->pll_limit, req->best_parent_rate,
-			      &req->rate, &val);
+			      &req->rate);
 }
 
 static void pll_get_mode_ctrl(unsigned long div_sel,
@@ -134,7 +131,7 @@ static int ipll_set_rate(struct clk_hw *hw, unsigned long rate,
 	unsigned long flags;
 	struct cv1800_clk_pll *pll = hw_to_cv1800_clk_pll(hw);
 
-	ipll_find_rate(pll->pll_limit, parent_rate, &rate, &detected);
+	ipll_find_rate(pll->pll_limit, parent_rate, &rate);
 	pll_get_mode_ctrl(PLL_GET_DIV_SEL(detected),
 			  ipll_check_mode_ctrl_restrict,
 			  pll->pll_limit, &detected);

base-commit: 2e1b3cc9d7f790145a80cb705b168f05dab65df2
-- 
2.46.1