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From: Rosen Penev <rosenp@gmail.com>
To: linux-phy@lists.infradead.org
Cc: Patrice Chotard <patrice.chotard@foss.st.com>,
	Vinod Koul <vkoul@kernel.org>,
	Neil Armstrong <neil.armstrong@linaro.org>,
	Kees Cook <kees@kernel.org>,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>,
	linux-arm-kernel@lists.infradead.org (moderated list:ARM/STI
	ARCHITECTURE), linux-kernel@vger.kernel.org (open list),
	linux-hardening@vger.kernel.org (open list:KERNEL HARDENING (not
	covered by other areas):Keyword:\b__counted_by(_le|_be)?\b)
Subject: [PATCH] phy: miphy28lp: kzalloc + kcalloc to single kzalloc
Date: Wed,  4 Mar 2026 15:28:48 -0800	[thread overview]
Message-ID: <20260304232848.469446-1-rosenp@gmail.com> (raw)

Use flex array to simplify allocation.

Allows using __counted_by for extra runtime analysis.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/phy/st/phy-miphy28lp.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/phy/st/phy-miphy28lp.c b/drivers/phy/st/phy-miphy28lp.c
index 43cef89af55e..fd931ede7162 100644
--- a/drivers/phy/st/phy-miphy28lp.c
+++ b/drivers/phy/st/phy-miphy28lp.c
@@ -224,8 +224,8 @@ struct miphy28lp_dev {
 	struct device *dev;
 	struct regmap *regmap;
 	struct mutex miphy_mutex;
-	struct miphy28lp_phy **phys;
 	int nphys;
+	struct miphy28lp_phy *phys[] __counted_by(nphys);
 };
 
 enum miphy_sata_gen { SATA_GEN1, SATA_GEN2, SATA_GEN3 };
@@ -1168,16 +1168,14 @@ static int miphy28lp_probe(struct platform_device *pdev)
 	struct phy_provider *provider;
 	struct phy *phy;
 	int ret, port = 0;
+	size_t nphys;
 
-	miphy_dev = devm_kzalloc(&pdev->dev, sizeof(*miphy_dev), GFP_KERNEL);
+	nphys = of_get_child_count(np);
+	miphy_dev = devm_kzalloc(&pdev->dev, struct_size(wiphy_dev, phys, nphys) ,GFP_KERNEL);
 	if (!miphy_dev)
 		return -ENOMEM;
 
-	miphy_dev->nphys = of_get_child_count(np);
-	miphy_dev->phys = devm_kcalloc(&pdev->dev, miphy_dev->nphys,
-				       sizeof(*miphy_dev->phys), GFP_KERNEL);
-	if (!miphy_dev->phys)
-		return -ENOMEM;
+	miphy_dev->nphys = nphys;
 
 	miphy_dev->regmap = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
 	if (IS_ERR(miphy_dev->regmap)) {
-- 
2.53.0



WARNING: multiple messages have this Message-ID (diff)
From: Rosen Penev <rosenp@gmail.com>
To: linux-phy@lists.infradead.org
Cc: Patrice Chotard <patrice.chotard@foss.st.com>,
	Vinod Koul <vkoul@kernel.org>,
	Neil Armstrong <neil.armstrong@linaro.org>,
	Kees Cook <kees@kernel.org>,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>,
	linux-arm-kernel@lists.infradead.org (moderated list:ARM/STI
	ARCHITECTURE), linux-kernel@vger.kernel.org (open list),
	linux-hardening@vger.kernel.org (open list:KERNEL HARDENING (not
	covered by other areas):Keyword:\b__counted_by(_le|_be)?\b)
Subject: [PATCH] phy: miphy28lp: kzalloc + kcalloc to single kzalloc
Date: Wed,  4 Mar 2026 15:28:48 -0800	[thread overview]
Message-ID: <20260304232848.469446-1-rosenp@gmail.com> (raw)

Use flex array to simplify allocation.

Allows using __counted_by for extra runtime analysis.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/phy/st/phy-miphy28lp.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/phy/st/phy-miphy28lp.c b/drivers/phy/st/phy-miphy28lp.c
index 43cef89af55e..fd931ede7162 100644
--- a/drivers/phy/st/phy-miphy28lp.c
+++ b/drivers/phy/st/phy-miphy28lp.c
@@ -224,8 +224,8 @@ struct miphy28lp_dev {
 	struct device *dev;
 	struct regmap *regmap;
 	struct mutex miphy_mutex;
-	struct miphy28lp_phy **phys;
 	int nphys;
+	struct miphy28lp_phy *phys[] __counted_by(nphys);
 };
 
 enum miphy_sata_gen { SATA_GEN1, SATA_GEN2, SATA_GEN3 };
@@ -1168,16 +1168,14 @@ static int miphy28lp_probe(struct platform_device *pdev)
 	struct phy_provider *provider;
 	struct phy *phy;
 	int ret, port = 0;
+	size_t nphys;
 
-	miphy_dev = devm_kzalloc(&pdev->dev, sizeof(*miphy_dev), GFP_KERNEL);
+	nphys = of_get_child_count(np);
+	miphy_dev = devm_kzalloc(&pdev->dev, struct_size(wiphy_dev, phys, nphys) ,GFP_KERNEL);
 	if (!miphy_dev)
 		return -ENOMEM;
 
-	miphy_dev->nphys = of_get_child_count(np);
-	miphy_dev->phys = devm_kcalloc(&pdev->dev, miphy_dev->nphys,
-				       sizeof(*miphy_dev->phys), GFP_KERNEL);
-	if (!miphy_dev->phys)
-		return -ENOMEM;
+	miphy_dev->nphys = nphys;
 
 	miphy_dev->regmap = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
 	if (IS_ERR(miphy_dev->regmap)) {
-- 
2.53.0


-- 
linux-phy mailing list
linux-phy@lists.infradead.org
https://lists.infradead.org/mailman/listinfo/linux-phy

             reply	other threads:[~2026-03-04 23:29 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-04 23:28 Rosen Penev [this message]
2026-03-04 23:28 ` [PATCH] phy: miphy28lp: kzalloc + kcalloc to single kzalloc Rosen Penev
2026-03-06  4:27 ` Gustavo A. R. Silva
2026-03-06  4:27   ` Gustavo A. R. Silva
2026-03-06 19:36   ` Rosen Penev
2026-03-06 19:36     ` Rosen Penev

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