Hi Kiran, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on backlight/for-backlight-next] [also build test WARNING on v4.17-rc3 next-20180504] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Kiran-Gunda/backlight-qcom-wled-Support-for-QCOM-wled-driver/20180504-011042 base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight.git for-backlight-next smatch warnings: drivers/video/backlight/qcom-wled.c:304 wled_update_status() warn: inconsistent returns 'mutex:&wled->lock'. Locked on: line 287 Unlocked on: line 304 # https://github.com/0day-ci/linux/commit/3856199804123df89ef9a712f0740978ec71ddf6 git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout 3856199804123df89ef9a712f0740978ec71ddf6 vim +304 drivers/video/backlight/qcom-wled.c 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 263 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 264 static int wled_update_status(struct backlight_device *bl) 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 265 { 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 266 struct wled *wled = bl_get_data(bl); 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 267 u16 brightness = bl->props.brightness; 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 268 int rc = 0; 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 269 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 270 if (bl->props.power != FB_BLANK_UNBLANK || 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 271 bl->props.fb_blank != FB_BLANK_UNBLANK || 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 272 bl->props.state & BL_CORE_FBBLANK) 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 273 brightness = 0; 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 274 38561998 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 275 mutex_lock(&wled->lock); 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 276 if (brightness) { 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 277 rc = wled->wled_set_brightness(wled, brightness); 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 278 if (rc < 0) { 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 279 dev_err(wled->dev, "wled failed to set brightness rc:%d\n", 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 280 rc); 38561998 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 281 goto unlock_mutex; 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 282 } 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 283 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 284 rc = wled->wled_sync_toggle(wled); 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 285 if (rc < 0) { 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 286 dev_err(wled->dev, "wled sync failed rc:%d\n", rc); 93c64f1e drivers/leds/leds-pm8941-wled.c Courtney Cavin 2015-03-12 287 return rc; 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 288 } 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 289 } 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 290 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 291 if (!!brightness != !!wled->brightness) { 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 292 rc = wled_module_enable(wled, !!brightness); 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 293 if (rc < 0) { 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 294 dev_err(wled->dev, "wled enable failed rc:%d\n", rc); 38561998 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 295 goto unlock_mutex; 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 296 } 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 297 } 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 298 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 299 wled->brightness = brightness; 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 300 38561998 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 301 unlock_mutex: 38561998 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 302 mutex_unlock(&wled->lock); 38561998 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 303 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 @304 return rc; 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 305 } 18e7abb8 drivers/video/backlight/qcom-wled.c Kiran Gunda 2018-05-03 306 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
