Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fix from Guenter Roeck:
"Fix arithmetic overflow in ntc_thermistor driver"
* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (ntc_thermistor) Avoid math overflow
+3
-3
+3
-3
drivers/hwmon/ntc_thermistor.c
+3
-3
drivers/hwmon/ntc_thermistor.c
···
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static int ntc_adc_iio_read(struct ntc_thermistor_platform_data *pdata)
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{
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struct iio_channel *channel = pdata->chan;
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-
unsigned int result;
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+
s64 result;
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int val, ret;
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ret = iio_read_channel_raw(channel, &val);
···
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}
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/* unit: mV */
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-
result = pdata->pullup_uv * val;
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+
result = pdata->pullup_uv * (s64) val;
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result >>= 12;
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-
return result;
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+
return (int)result;
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}
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static const struct of_device_id ntc_match[] = {