On Thursday 12 May 2016 09:38:52 Build bot for Mark Brown wrote:
arm64-allnoconfig : PASS, 0 errors, 1 warnings, 0 section mismatches
Warnings: ../mm/page_alloc.c:3658:5: warning: 'compact_result' may be used uninitialized in this function [-Wmaybe-uninitialized]
I sent a patch, and a better one was done subsequently.
arm64-allmodconfig : PASS, 0 errors, 15 warnings, 0 section mismatches
Warnings: ../fs/gfs2/dir.c:802:9: warning: 'leaf_no' may be used uninitialized in this function [-Wmaybe-uninitialized] ../fs/gfs2/dir.c:1021:8: warning: 'leaf_no' may be used uninitialized in this function [-Wmaybe-uninitialized] ../fs/reiserfs/ibalance.c:1156:2: warning: 'new_insert_key' may be used uninitialized in this function [-Wmaybe-uninitialized] ../drivers/staging/iio/adc/ad7606_spi.c:24:18: warning: 'data' may be used uninitialized in this function [-Wmaybe-uninitialized]
I should check these all, these may have been uncovered by my change to not set CONFIG_CC_OPTIMIZE_FOR_SIZE for allmodconfig, which dropped the -Wno-maybe-uninitialized.
Which compiler version are you using?
../include/acpi/video.h:74:12: warning: 'acpi_video_get_levels' defined but not used [-Wunused-function] ../include/acpi/video.h:74:12: warning: 'acpi_video_get_levels' defined but not used [-Wunused-function]
Should be easy to fix. I never saw this so far, as it's only on arm64, not arm32.
../include/soc/nps/common.h:148:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] ../include/soc/nps/common.h:162:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] ../drivers/soc/mediatek/mtk-pmic-wrap.c:1062:16: warning: large integer implicitly truncated to unsigned type [-Woverflow] ../drivers/soc/mediatek/mtk-pmic-wrap.c:1074:16: warning: large integer implicitly truncated to unsigned type [-Woverflow] ../drivers/soc/mediatek/mtk-pmic-wrap.c:1086:16: warning: large integer implicitly truncated to unsigned type [-Woverflow]
Probably a regression that shows up on all 64-bit builds, will take a look
../drivers/xen/balloon.c:154:13: warning: 'release_memory_resource' declared 'static' but never defined [-Wunused-function]
I sent a patch
arm-multi_v5_defconfig : PASS, 0 errors, 3 warnings, 0 section mismatches
Warnings: ../kernel/cgroup.c:1634:15: warning: unused variable 'ret' [-Wunused-variable]
My patch should be merged tomorrow.
../drivers/regulator/core.c:2536:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations]
arm-allmodconfig : PASS, 0 errors, 6 warnings, 0 section mismatches
Warnings: ../drivers/gpu/drm/omapdrm/dss/dsi.c:1183:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/omapdrm/dss/hdmi4.c:117:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations] ../drivers/gpu/drm/omapdrm/dss/hdmi5.c:134:2: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations]
Only omapdrm remains using this. Peter Ujfalusi sent a patch for it and Tomi Valkeinen applied it and sent a pull request to dri-devel this Monday, but it has not yet shown up in linux-next, see
http://permalink.gmane.org/gmane.linux.kernel/2210499 http://lkml.iu.edu/hypermail/linux/kernel/1604.3/05431.html http://www.spinics.net/lists/dri-devel/msg106847.html
I assume it's going to be there in -rc1.
Mark, are you planning to remove the definition for 4.7 when we get there? If not, maybe do a change so we don't get a warning for the EXPORT_SYMBOL?
Arnd