From: Rosen Penev <rosenp@gmail.com>
Date: Thu, 26 Mar 2026 04:23:17 +0000 (-0700)
Subject: clk: visconti: pll: use kzalloc_flex
X-Git-Tag: v7.2-rc1~26^2~9
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=4758f1354f00abf1d97d2f85a016123c78c1f548;p=thirdparty%2Flinux.git

clk: visconti: pll: use kzalloc_flex

Simplify allocation by using a flexible array member and kzalloc_flex.

Add __counted_by for extra runtime analysis. Assign after allocation as
required by __counted_by.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: Brian Masney <bmasney@redhat.com>
Acked-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.x90@mail.toshiba>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
---

diff --git a/drivers/clk/visconti/pll.c b/drivers/clk/visconti/pll.c
index 805b954812817..3ce1a906fb0c3 100644
--- a/drivers/clk/visconti/pll.c
+++ b/drivers/clk/visconti/pll.c
@@ -21,9 +21,9 @@ struct visconti_pll {
 	void __iomem	*pll_base;
 	spinlock_t	*lock;
 	unsigned long flags;
-	const struct visconti_pll_rate_table *rate_table;
 	size_t rate_count;
 	struct visconti_pll_provider *ctx;
+	struct visconti_pll_rate_table rate_table[] __counted_by(rate_count);
 };
 
 #define PLL_CONF_REG		0x0000
@@ -255,10 +255,6 @@ static struct clk_hw *visconti_register_pll(struct visconti_pll_provider *ctx,
 	size_t len;
 	int ret;
 
-	pll = kzalloc_obj(*pll);
-	if (!pll)
-		return ERR_PTR(-ENOMEM);
-
 	init.name = name;
 	init.flags = CLK_IGNORE_UNUSED;
 	init.parent_names = &parent_name;
@@ -266,11 +262,13 @@ static struct clk_hw *visconti_register_pll(struct visconti_pll_provider *ctx,
 
 	for (len = 0; rate_table[len].rate != 0; )
 		len++;
+
+	pll = kzalloc_flex(*pll, rate_table, len);
+	if (!pll)
+		return ERR_PTR(-ENOMEM);
+
 	pll->rate_count = len;
-	pll->rate_table = kmemdup_array(rate_table,
-					pll->rate_count, sizeof(*pll->rate_table),
-					GFP_KERNEL);
-	WARN(!pll->rate_table, "%s: could not allocate rate table for %s\n", __func__, name);
+	memcpy(pll->rate_table, rate_table, len * sizeof(*pll->rate_table));
 
 	init.ops = &visconti_pll_ops;
 	pll->hw.init = &init;
@@ -282,7 +280,6 @@ static struct clk_hw *visconti_register_pll(struct visconti_pll_provider *ctx,
 	ret = clk_hw_register(NULL, &pll->hw);
 	if (ret) {
 		pr_err("failed to register pll clock %s : %d\n", name, ret);
-		kfree(pll->rate_table);
 		kfree(pll);
 		pll_hw_clk = ERR_PTR(ret);
 	}