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mvebu: WT61P803: use flex array

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Simplifies allocation and allows extra runtime analysis.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/22484
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Rosen Penev 2026-03-14 17:02:28 -07:00 committed by Hauke Mehrtens
parent cb3657463d
commit 0fe5684bbd
1 changed files with 5 additions and 8 deletions
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13
target/linux/mvebu/patches-6.12/903-drivers-hwmon-Add-the-IEI-WT61P803-PUZZLE-HWMON-driv.patch
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@ -53,7 +53,7 @@ Cc: Robert Marko <robert.marko@sartura.hr>
obj-$(CONFIG_SENSORS_IBMPOWERNV)+= ibmpowernv.o
--- /dev/null
+++ b/drivers/hwmon/iei-wt61p803-puzzle-hwmon.c
@@ -0,0 +1,447 @@
@@ -0,0 +1,444 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* IEI WT61P803 PUZZLE MCU HWMON Driver
+ *
@ -83,18 +83,18 @@ Cc: Robert Marko <robert.marko@sartura.hr>
+ * @tcdev: Thermal cooling device pointer
+ * @name: Thermal cooling device name
+ * @pwm_channel: Controlled PWM channel (0 or 1)
+ * @cooling_levels: Thermal cooling device cooling levels (DT)
+ * @cur_level: Current cooling level
+ * @num_levels: Number of cooling levels
+ * @cooling_levels: Thermal cooling device cooling levels (DT)
+ */
+struct iei_wt61p803_puzzle_thermal_cooling_device {
+ struct iei_wt61p803_puzzle_hwmon *mcu_hwmon;
+ struct thermal_cooling_device *tcdev;
+ char name[THERMAL_NAME_LENGTH];
+ int pwm_channel;
+ u32 *cooling_levels;
+ int cur_level;
+ u8 num_levels;
+ u32 cooling_levels[] __counted_by(num_levels);
+};
+
+/**
@ -401,13 +401,11 @@ Cc: Robert Marko <robert.marko@sartura.hr>
+ if (!num_levels)
+ return -EINVAL;
+
+ cdev = devm_kzalloc(dev, sizeof(*cdev), GFP_KERNEL);
+ cdev = devm_kzalloc(dev, struct_size(cdev, cooling_levels, num_levels), GFP_KERNEL);
+ if (!cdev)
+ return -ENOMEM;
+
+ cdev->cooling_levels = devm_kmalloc_array(dev, num_levels, sizeof(u32), GFP_KERNEL);
+ if (!cdev->cooling_levels)
+ return -ENOMEM;
+ cdev->num_levels = num_levels;
+
+ ret = fwnode_property_read_u32_array(child, "cooling-levels",
+ cdev->cooling_levels,
@ -429,7 +427,6 @@ Cc: Robert Marko <robert.marko@sartura.hr>
+
+ cdev->mcu_hwmon = mcu_hwmon;
+ cdev->pwm_channel = pwm_channel;
+ cdev->num_levels = num_levels;
+ cdev->cur_level = -1;
+ mcu_hwmon->cdev[pwm_channel] = cdev;
+