* [geoffreybennett-scarlett-gen2:vocaster 12/14] sound/usb/mixer_scarlett2.c:5064:6: warning: variable 'err' is used uninitialized whenever 'if' condition is true
@ 2024-03-11 1:27 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2024-03-11 1:27 UTC (permalink / raw)
To: Geoffrey D. Bennett; +Cc: llvm, oe-kbuild-all
tree: https://github.com/geoffreybennett/scarlett-gen2.git vocaster
head: ce1668580ca3badaca4f8350f738ae5e91ee50c1
commit: dd8657c33cf1b8145bab99aba647a8791f8f81f2 [12/14] ALSA: scarlett2: Add DSP controls
config: arm-defconfig (https://download.01.org/0day-ci/archive/20240311/202403110957.naszvdIe-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240311/202403110957.naszvdIe-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202403110957.naszvdIe-lkp@intel.com/
All error/warnings (new ones prefixed by >>, old ones prefixed by <<):
>> sound/usb/mixer_scarlett2.c:5064:6: warning: variable 'err' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
if (oval == val)
^~~~~~~~~~~
sound/usb/mixer_scarlett2.c:5078:9: note: uninitialized use occurs here
return err;
^~~
sound/usb/mixer_scarlett2.c:5064:2: note: remove the 'if' if its condition is always false
if (oval == val)
^~~~~~~~~~~~~~~~
sound/usb/mixer_scarlett2.c:5052:20: note: initialize the variable 'err' to silence this warning
int oval, val, err;
^
= 0
sound/usb/mixer_scarlett2.c:5099:6: warning: variable 'err' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
if (oval == val)
^~~~~~~~~~~
sound/usb/mixer_scarlett2.c:5113:9: note: uninitialized use occurs here
return err;
^~~
sound/usb/mixer_scarlett2.c:5099:2: note: remove the 'if' if its condition is always false
if (oval == val)
^~~~~~~~~~~~~~~~
sound/usb/mixer_scarlett2.c:5087:20: note: initialize the variable 'err' to silence this warning
int oval, val, err;
^
= 0
2 warnings generated.
--
WARNING: modpost: missing MODULE_DESCRIPTION() in vmlinux.o
WARNING: modpost: missing MODULE_DESCRIPTION() in arch/arm/crypto/aes-arm-bs.o
WARNING: modpost: missing MODULE_DESCRIPTION() in arch/arm/crypto/crc32-arm-ce.o
WARNING: modpost: missing MODULE_DESCRIPTION() in crypto/af_alg.o
WARNING: modpost: missing MODULE_DESCRIPTION() in crypto/algif_hash.o
WARNING: modpost: missing MODULE_DESCRIPTION() in crypto/algif_skcipher.o
WARNING: modpost: missing MODULE_DESCRIPTION() in crypto/ecc.o
WARNING: modpost: missing MODULE_DESCRIPTION() in crypto/crypto_simd.o
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libarc4.o
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libdes.o
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libsha256.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/pwm/pwm-samsung.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/dma/ti/cppi41.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/bridge/sii9234.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/base/regmap/regmap-ac97.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/misc/fastrpc.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/spi/spi-qup.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/phy/phy-am335x-control.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/phy/phy-am335x.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/host/ohci-exynos.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/storage/uas.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_acm.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_ss_lb.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/u_serial.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_serial.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_obex.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/u_ether.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_ncm.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_ecm.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_eem.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_ecm_subset.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_rndis.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_mass_storage.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_fs.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_uac1.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_uac1_legacy.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_uac2.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_uvc.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_midi.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_hid.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/function/usb_f_printer.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/gadget/libcomposite.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/media/tuners/tda9887.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/media/common/uvc.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/media/platform/marvell/mmp_camera.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/media/platform/marvell/mcam-core.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/media/platform/samsung/exynos4-is/exynos-fimc-lite.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/media/platform/samsung/exynos4-is/exynos-fimc-is.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/media/platform/samsung/exynos4-is/exynos4-is-common.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/media/dvb-frontends/au8522_decoder.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/media/dvb-frontends/mb86a16.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/media/v4l2-core/v4l2-async.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/media/v4l2-core/v4l2-fwnode.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/rpmsg/rpmsg_char.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fsi/fsi-core.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fsi/fsi-master-hub.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fsi/fsi-master-aspeed.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fsi/fsi-master-gpio.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fsi/fsi-scom.o
WARNING: modpost: missing MODULE_DESCRIPTION() in sound/core/snd-pcm-dmaengine.o
WARNING: modpost: missing MODULE_DESCRIPTION() in sound/soc/fsl/imx-pcm-fiq.o
WARNING: modpost: missing MODULE_DESCRIPTION() in sound/soc/fsl/imx-pcm-dma.o
WARNING: modpost: missing MODULE_DESCRIPTION() in sound/soc/qcom/snd-soc-qcom-common.o
WARNING: modpost: missing MODULE_DESCRIPTION() in sound/ac97_bus.o
>> ERROR: modpost: "__aeabi_ldivmod" [sound/usb/snd-usb-audio.ko] undefined!
vim +5064 sound/usb/mixer_scarlett2.c
5045
5046 static int scarlett2_precomp_flt_switch_ctl_put(
5047 struct snd_kcontrol *kctl, struct snd_ctl_elem_value *ucontrol)
5048 {
5049 struct usb_mixer_elem_info *elem = kctl->private_data;
5050 struct usb_mixer_interface *mixer = elem->head.mixer;
5051 struct scarlett2_data *private = mixer->private_data;
5052 int oval, val, err;
5053
5054 mutex_lock(&private->data_mutex);
5055
5056 if (private->hwdep_in_use) {
5057 err = -EBUSY;
5058 goto unlock;
5059 }
5060
5061 oval = private->precomp_flt_switch[elem->control];
5062 val = ucontrol->value.integer.value[0];
5063
> 5064 if (oval == val)
5065 goto unlock;
5066
5067 private->precomp_flt_switch[elem->control] = val;
5068
5069 /* Send change to the device */
5070 err = scarlett2_usb_set_config(
5071 mixer, SCARLETT2_CONFIG_PRECOMP_FLT_SWITCH,
5072 elem->control, val);
5073 if (err == 0)
5074 err = 1;
5075
5076 unlock:
5077 mutex_unlock(&private->data_mutex);
5078 return err;
5079 }
5080
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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