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HID: logitech: fix a used uninitialized GCC warning
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Fix the following compile warning:

drivers/hid/hid-logitech-hidpp.c: In function 'hi_res_scroll_enable':
drivers/hid/hid-logitech-hidpp.c:2714:54: warning: 'multiplier' may be used uninitialized in this function [-Wmaybe-uninitialized]
  hidpp->vertical_wheel_counter.resolution_multiplier = multiplier;

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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zhong jiang authored and Jiri Kosina committed Sep 24, 2018
1 parent 3fe1d6b commit 5fe2ccb
Showing 1 changed file with 3 additions and 5 deletions.
8 changes: 3 additions & 5 deletions drivers/hid/hid-logitech-hidpp.c
Original file line number Diff line number Diff line change
Expand Up @@ -1231,7 +1231,6 @@ static int hidpp_hrw_get_wheel_capability(struct hidpp_device *hidpp,
*multiplier = response.fap.params[0];
return 0;
return_default:
*multiplier = 8;
hid_warn(hidpp->hid_dev,
"Couldn't get wheel multiplier (error %d), assuming %d.\n",
ret, *multiplier);
Expand Down Expand Up @@ -2696,18 +2695,17 @@ static int hi_res_scroll_look_up_microns(__u32 product_id)
static int hi_res_scroll_enable(struct hidpp_device *hidpp)
{
int ret;
u8 multiplier;
u8 multiplier = 8;

if (hidpp->quirks & HIDPP_QUIRK_HI_RES_SCROLL_X2121) {
ret = hidpp_hrw_set_wheel_mode(hidpp, false, true, false);
hidpp_hrw_get_wheel_capability(hidpp, &multiplier);
} else if (hidpp->quirks & HIDPP_QUIRK_HI_RES_SCROLL_X2120) {
ret = hidpp_hrs_set_highres_scrolling_mode(hidpp, true,
&multiplier);
} else /* if (hidpp->quirks & HIDPP_QUIRK_HI_RES_SCROLL_1P0) */ {
} else /* if (hidpp->quirks & HIDPP_QUIRK_HI_RES_SCROLL_1P0) */
ret = hidpp10_enable_scrolling_acceleration(hidpp);
multiplier = 8;
}

if (ret)
return ret;

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