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| author | zhong jiang | 2018-09-13 09:41:10 +0200 |
|---|---|---|
| committer | Jiri Kosina | 2018-09-24 11:30:52 +0200 |
| commit | 5fe2ccbef9d7aecf5c4402c753444f1a12096cfd (patch) | |
| tree | 7106dd603efbee982ab15ca1876ebb32041bf741 /drivers/hid/hid-logitech-hidpp.c | |
| parent | HID: logitech: Use LDJ_DEVICE macro for existing Logitech mice (diff) | |
| download | kernel-qcow2-linux-5fe2ccbef9d7aecf5c4402c753444f1a12096cfd.tar.gz kernel-qcow2-linux-5fe2ccbef9d7aecf5c4402c753444f1a12096cfd.tar.xz kernel-qcow2-linux-5fe2ccbef9d7aecf5c4402c753444f1a12096cfd.zip | |
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 <zhongjiang@huawei.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-logitech-hidpp.c')
| -rw-r--r-- | drivers/hid/hid-logitech-hidpp.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index 5f0c080059c6..f01280898b24 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; |