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USB: cxacru: Fix negative dB output
Values of dB between -0.99 and -0.01 will be output with the wrong sign. This converts the negative value to positive and outputs it with a "-" prefix. Signed-off-by: Simon Arlott <simon@fire.lp0.eu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -227,8 +227,14 @@ static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf)
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static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%d.%02u\n",
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value / 100, abs(value) % 100);
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if (likely(value >= 0)) {
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return snprintf(buf, PAGE_SIZE, "%u.%02u\n",
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value / 100, value % 100);
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} else {
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value = -value;
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return snprintf(buf, PAGE_SIZE, "-%u.%02u\n",
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value / 100, value % 100);
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}
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}
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static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf)
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