From: Armin Wolf <W_Armin@gmx.de> stable inclusion from stable-v6.6.2 commit 11842b094a6402cb7e93010d3805de9bf25beede category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit 7f0b28e0653f36b51542d25dd54ed312c397ecfc ] Use bit macros then accessing SCH5627_REG_CTRL, so that people do not need to look at the datasheet to find out what each bit does. Tested on a Fujitsu Esprimo P720. Signed-off-by: Armin Wolf <W_Armin@gmx.de> Link: https://lore.kernel.org/r/20230907052639.16491-2-W_Armin@gmx.de Signed-off-by: Guenter Roeck <linux@roeck-us.net> Stable-dep-of: 7da8a6354360 ("hwmon: (sch5627) Disallow write access if virtual registers are locked") Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> --- drivers/hwmon/sch5627.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/hwmon/sch5627.c b/drivers/hwmon/sch5627.c index 1bbda3b05532..0eefb8c0aef2 100644 --- a/drivers/hwmon/sch5627.c +++ b/drivers/hwmon/sch5627.c @@ -6,6 +6,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#include <linux/bits.h> #include <linux/module.h> #include <linux/mod_devicetable.h> #include <linux/init.h> @@ -32,6 +33,9 @@ #define SCH5627_REG_PRIMARY_ID 0x3f #define SCH5627_REG_CTRL 0x40 +#define SCH5627_CTRL_START BIT(0) +#define SCH5627_CTRL_VBAT BIT(4) + #define SCH5627_NO_TEMPS 8 #define SCH5627_NO_FANS 4 #define SCH5627_NO_IN 5 @@ -147,7 +151,8 @@ static int sch5627_update_in(struct sch5627_data *data) /* Trigger a Vbat voltage measurement every 5 minutes */ if (time_after(jiffies, data->last_battery + 300 * HZ)) { - sch56xx_write_virtual_reg(data->addr, SCH5627_REG_CTRL, data->control | 0x10); + sch56xx_write_virtual_reg(data->addr, SCH5627_REG_CTRL, + data->control | SCH5627_CTRL_VBAT); data->last_battery = jiffies; } @@ -483,14 +488,13 @@ static int sch5627_probe(struct platform_device *pdev) return val; data->control = val; - if (!(data->control & 0x01)) { + if (!(data->control & SCH5627_CTRL_START)) { pr_err("hardware monitoring not enabled\n"); return -ENODEV; } /* Trigger a Vbat voltage measurement, so that we get a valid reading the first time we read Vbat */ - sch56xx_write_virtual_reg(data->addr, SCH5627_REG_CTRL, - data->control | 0x10); + sch56xx_write_virtual_reg(data->addr, SCH5627_REG_CTRL, data->control | SCH5627_CTRL_VBAT); data->last_battery = jiffies; /* -- 2.25.1