[PATCH 6.18.y 1/2] nvmem: rockchip-otp: alloc clks with main struct

[Sasha Levin <sashal@kernel.org>]

From: Rosen Penev <rosenp@gmail.com>

[ Upstream commit 9f99bb979f930e52e6861114fe03535d4bc2f374 ]

Use a flexible array member to simplify allocation slightly. No need for
a separate calloc.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Srinivas Kandagatla <srini@kernel.org>
Link: https://patch.msgid.link/20260530205333.117458-3-srini@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: 9fc6a1592d84 ("nvmem: rockchip-otp: Serialize reads")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/nvmem/rockchip-otp.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/nvmem/rockchip-otp.c b/drivers/nvmem/rockchip-otp.c
index d88f12c532426..00921b9fe9aae 100644
--- a/drivers/nvmem/rockchip-otp.c
+++ b/drivers/nvmem/rockchip-otp.c
@@ -77,9 +77,9 @@ struct rockchip_data {
 struct rockchip_otp {
 	struct device *dev;
 	void __iomem *base;
-	struct clk_bulk_data *clks;
 	struct reset_control *rst;
 	const struct rockchip_data *data;
+	struct clk_bulk_data clks[];
 };
 
 static int rockchip_otp_reset(struct rockchip_otp *otp)
@@ -327,7 +327,7 @@ static int rockchip_otp_probe(struct platform_device *pdev)
 	if (!data)
 		return dev_err_probe(dev, -EINVAL, "failed to get match data\n");
 
-	otp = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_otp),
+	otp = devm_kzalloc(&pdev->dev, struct_size(otp, clks, data->num_clks),
 			   GFP_KERNEL);
 	if (!otp)
 		return -ENOMEM;
@@ -339,11 +339,6 @@ static int rockchip_otp_probe(struct platform_device *pdev)
 		return dev_err_probe(dev, PTR_ERR(otp->base),
 				     "failed to ioremap resource\n");
 
-	otp->clks = devm_kcalloc(dev, data->num_clks, sizeof(*otp->clks),
-				 GFP_KERNEL);
-	if (!otp->clks)
-		return -ENOMEM;
-
 	for (i = 0; i < data->num_clks; ++i)
 		otp->clks[i].id = data->clks[i];
 
-- 
2.53.0