From: zhong jiang Date: Thu, 13 Sep 2018 07:41:10 +0000 (+0800) Subject: HID: logitech: fix a used uninitialized GCC warning X-Git-Tag: v5.4-rc1~2385^2~2^2~1 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5fe2ccbef9d7aecf5c4402c753444f1a12096cfd;p=platform%2Fkernel%2Flinux-rpi.git HID: logitech: fix a used uninitialized GCC warning 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 Signed-off-by: Jiri Kosina --- diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index 5f0c080..f012808 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -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); @@ -2696,7 +2695,7 @@ 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); @@ -2704,10 +2703,9 @@ static int hi_res_scroll_enable(struct hidpp_device *hidpp) } 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;