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| author | Vishwas M <vishwas.reddy.vr@gmail.com> | 2020-07-07 17:27:47 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-22 10:22:28 +0300 |
| commit | 65c5f9648f86d680d34e0baf663a1f26aa1aca6c (patch) | |
| tree | 44eb7b4e6d2118f29513e8d5df1cba79dbdad738 /drivers/hwmon | |
| parent | 02a6eaa973e68b80d9ac16f2a7cefe16595a5407 (diff) | |
| download | linux-65c5f9648f86d680d34e0baf663a1f26aa1aca6c.tar.xz | |
hwmon: (emc2103) fix unable to change fan pwm1_enable attribute
commit 14b0e83dc4f1e52b94acaeb85a18fd7fdd46d2dc upstream.
This patch fixes a bug which does not let FAN mode to be changed from
sysfs(pwm1_enable). i.e pwm1_enable can not be set to 3, it will always
remain at 0.
This is caused because the device driver handles the result of
"read_u8_from_i2c(client, REG_FAN_CONF1, &conf_reg)" incorrectly. The
driver thinks an error has occurred if the (result != 0). This has been
fixed by changing the condition to (result < 0).
Signed-off-by: Vishwas M <vishwas.reddy.vr@gmail.com>
Link: https://lore.kernel.org/r/20200707142747.118414-1-vishwas.reddy.vr@gmail.com
Fixes: 9df7305b5a86 ("hwmon: Add driver for SMSC EMC2103 temperature monitor and fan controller")
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/emc2103.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hwmon/emc2103.c b/drivers/hwmon/emc2103.c index 1ed9a7aa953d..f4985622b179 100644 --- a/drivers/hwmon/emc2103.c +++ b/drivers/hwmon/emc2103.c @@ -454,7 +454,7 @@ static ssize_t pwm1_enable_store(struct device *dev, } result = read_u8_from_i2c(client, REG_FAN_CONF1, &conf_reg); - if (result) { + if (result < 0) { count = result; goto err; } |