linux-kernel - drivers/hwmon/jc42.c:477 jc42_readable_reg() warn: always true condition '(reg >= 0) => (0-u32max >= 0)'

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Date:   Thu, 22 Dec 2022 22:35:51 +0800
From:   kernel test robot <lkp@...el.com>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Guenter Roeck <linux@...ck-us.net>
Subject: drivers/hwmon/jc42.c:477 jc42_readable_reg() warn: always true
 condition '(reg >= 0) => (0-u32max >= 0)'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   9d2f6060fe4c3b49d0cdc1dce1c99296f33379c8
commit: 8f2fa4726faf01094d7a5be7bd0c120c565f54d9 hwmon: (jc42) Convert register access and caching to regmap/regcache
date:   3 weeks ago
config: parisc-randconfig-m041-20221219
compiler: hppa-linux-gcc (GCC) 12.1.0

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>

smatch warnings:
drivers/hwmon/jc42.c:477 jc42_readable_reg() warn: always true condition '(reg >= 0) => (0-u32max >= 0)'

vim +477 drivers/hwmon/jc42.c

   474	
   475	static bool jc42_readable_reg(struct device *dev, unsigned int reg)
   476	{
 > 477		return (reg >= JC42_REG_CAP && reg <= JC42_REG_DEVICEID) ||
   478			reg == JC42_REG_SMBUS;
   479	}
   480	

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View attachment "config" of type "text/plain" (128542 bytes)