From 10107bd04fc88657204ca40af2ace33626496fd3 Mon Sep 17 00:00:00 2001
From: Simon Arlott <simon@fire.lp0.eu>
Date: Thu, 23 Apr 2009 18:19:02 +0100
Subject: [PATCH] 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>
---
drivers/usb/atm/cxacru.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c
index 6789089e2461e..56802d2e994ba 100644
--- a/drivers/usb/atm/cxacru.c
+++ b/drivers/usb/atm/cxacru.c
@@ -227,8 +227,14 @@ static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf)
static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf)
{
- return snprintf(buf, PAGE_SIZE, "%d.%02u\n",
- value / 100, abs(value) % 100);
+ if (likely(value >= 0)) {
+ return snprintf(buf, PAGE_SIZE, "%u.%02u\n",
+ value / 100, value % 100);
+ } else {
+ value = -value;
+ return snprintf(buf, PAGE_SIZE, "-%u.%02u\n",
+ value / 100, value % 100);
+ }
}
static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf)