Hi Mauro, I love your patch! Yet something to improve: [auto build test ERROR on mcgrof/modules-next] [also build test ERROR on linus/master v5.18-rc4 next-20220429] [cannot apply to tiwai-sound/for-next] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/intel-lab-lkp/linux/commits/Mauro-Carvalho-Chehab/Let-userspace-know-when-snd-hda-intel-needs-i915/20220430-214332 base: https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git modules-next config: ia64-randconfig-r023-20220428 (https://download.01.org/0day-ci/archive/20220501/202205010035.FAx0YtE1-lkp@xxxxxxxxx/config) compiler: ia64-linux-gcc (GCC) 11.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/intel-lab-lkp/linux/commit/32f6557b5cc77c3cc2fcf6e68f11d989e31c954d git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Mauro-Carvalho-Chehab/Let-userspace-know-when-snd-hda-intel-needs-i915/20220430-214332 git checkout 32f6557b5cc77c3cc2fcf6e68f11d989e31c954d # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=ia64 SHELL=/bin/bash sound/hda/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from arch/ia64/include/asm/pgtable.h:153, from include/linux/pgtable.h:6, from arch/ia64/include/asm/uaccess.h:40, from include/linux/uaccess.h:11, from arch/ia64/include/asm/sections.h:11, from include/linux/interrupt.h:21, from include/linux/pci.h:38, from sound/hda/hdac_component.c:6: arch/ia64/include/asm/mmu_context.h: In function 'reload_context': arch/ia64/include/asm/mmu_context.h:127:48: warning: variable 'old_rr4' set but not used [-Wunused-but-set-variable] 127 | unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4; | ^~~~~~~ sound/hda/hdac_component.c: In function 'hdac_component_master_bind': >> sound/hda/hdac_component.c:202:14: error: implicit declaration of function '__try_module_get'; did you mean 'try_module_get'? [-Werror=implicit-function-declaration] 202 | if (!__try_module_get(acomp->ops->owner, dev->driver->owner)) { | ^~~~~~~~~~~~~~~~ | try_module_get cc1: some warnings being treated as errors vim +202 sound/hda/hdac_component.c 3 4 #include <linux/init.h> 5 #include <linux/module.h> > 6 #include <linux/pci.h> 7 #include <linux/component.h> 8 #include <sound/core.h> 9 #include <sound/hdaudio.h> 10 #include <sound/hda_component.h> 11 #include <sound/hda_register.h> 12 13 static void hdac_acomp_release(struct device *dev, void *res) 14 { 15 } 16 17 static struct drm_audio_component *hdac_get_acomp(struct device *dev) 18 { 19 return devres_find(dev, hdac_acomp_release, NULL, NULL); 20 } 21 22 /** 23 * snd_hdac_set_codec_wakeup - Enable / disable HDMI/DP codec wakeup 24 * @bus: HDA core bus 25 * @enable: enable or disable the wakeup 26 * 27 * This function is supposed to be used only by a HD-audio controller 28 * driver that needs the interaction with graphics driver. 29 * 30 * This function should be called during the chip reset, also called at 31 * resume for updating STATESTS register read. 32 * 33 * Returns zero for success or a negative error code. 34 */ 35 int snd_hdac_set_codec_wakeup(struct hdac_bus *bus, bool enable) 36 { 37 struct drm_audio_component *acomp = bus->audio_component; 38 39 if (!acomp || !acomp->ops) 40 return -ENODEV; 41 42 if (!acomp->ops->codec_wake_override) 43 return 0; 44 45 dev_dbg(bus->dev, "%s codec wakeup\n", 46 enable ? "enable" : "disable"); 47 48 acomp->ops->codec_wake_override(acomp->dev, enable); 49 50 return 0; 51 } 52 EXPORT_SYMBOL_GPL(snd_hdac_set_codec_wakeup); 53 54 /** 55 * snd_hdac_display_power - Power up / down the power refcount 56 * @bus: HDA core bus 57 * @idx: HDA codec address, pass HDA_CODEC_IDX_CONTROLLER for controller 58 * @enable: power up or down 59 * 60 * This function is used by either HD-audio controller or codec driver that 61 * needs the interaction with graphics driver. 62 * 63 * This function updates the power status, and calls the get_power() and 64 * put_power() ops accordingly, toggling the codec wakeup, too. 65 */ 66 void snd_hdac_display_power(struct hdac_bus *bus, unsigned int idx, bool enable) 67 { 68 struct drm_audio_component *acomp = bus->audio_component; 69 70 dev_dbg(bus->dev, "display power %s\n", 71 enable ? "enable" : "disable"); 72 73 mutex_lock(&bus->lock); 74 if (enable) 75 set_bit(idx, &bus->display_power_status); 76 else 77 clear_bit(idx, &bus->display_power_status); 78 79 if (!acomp || !acomp->ops) 80 goto unlock; 81 82 if (bus->display_power_status) { 83 if (!bus->display_power_active) { 84 unsigned long cookie = -1; 85 86 if (acomp->ops->get_power) 87 cookie = acomp->ops->get_power(acomp->dev); 88 89 snd_hdac_set_codec_wakeup(bus, true); 90 snd_hdac_set_codec_wakeup(bus, false); 91 bus->display_power_active = cookie; 92 } 93 } else { 94 if (bus->display_power_active) { 95 unsigned long cookie = bus->display_power_active; 96 97 if (acomp->ops->put_power) 98 acomp->ops->put_power(acomp->dev, cookie); 99 100 bus->display_power_active = 0; 101 } 102 } 103 unlock: 104 mutex_unlock(&bus->lock); 105 } 106 EXPORT_SYMBOL_GPL(snd_hdac_display_power); 107 108 /** 109 * snd_hdac_sync_audio_rate - Set N/CTS based on the sample rate 110 * @codec: HDA codec 111 * @nid: the pin widget NID 112 * @dev_id: device identifier 113 * @rate: the sample rate to set 114 * 115 * This function is supposed to be used only by a HD-audio controller 116 * driver that needs the interaction with graphics driver. 117 * 118 * This function sets N/CTS value based on the given sample rate. 119 * Returns zero for success, or a negative error code. 120 */ 121 int snd_hdac_sync_audio_rate(struct hdac_device *codec, hda_nid_t nid, 122 int dev_id, int rate) 123 { 124 struct hdac_bus *bus = codec->bus; 125 struct drm_audio_component *acomp = bus->audio_component; 126 int port, pipe; 127 128 if (!acomp || !acomp->ops || !acomp->ops->sync_audio_rate) 129 return -ENODEV; 130 port = nid; 131 if (acomp->audio_ops && acomp->audio_ops->pin2port) { 132 port = acomp->audio_ops->pin2port(codec, nid); 133 if (port < 0) 134 return -EINVAL; 135 } 136 pipe = dev_id; 137 return acomp->ops->sync_audio_rate(acomp->dev, port, pipe, rate); 138 } 139 EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate); 140 141 /** 142 * snd_hdac_acomp_get_eld - Get the audio state and ELD via component 143 * @codec: HDA codec 144 * @nid: the pin widget NID 145 * @dev_id: device identifier 146 * @audio_enabled: the pointer to store the current audio state 147 * @buffer: the buffer pointer to store ELD bytes 148 * @max_bytes: the max bytes to be stored on @buffer 149 * 150 * This function is supposed to be used only by a HD-audio controller 151 * driver that needs the interaction with graphics driver. 152 * 153 * This function queries the current state of the audio on the given 154 * digital port and fetches the ELD bytes onto the given buffer. 155 * It returns the number of bytes for the total ELD data, zero for 156 * invalid ELD, or a negative error code. 157 * 158 * The return size is the total bytes required for the whole ELD bytes, 159 * thus it may be over @max_bytes. If it's over @max_bytes, it implies 160 * that only a part of ELD bytes have been fetched. 161 */ 162 int snd_hdac_acomp_get_eld(struct hdac_device *codec, hda_nid_t nid, int dev_id, 163 bool *audio_enabled, char *buffer, int max_bytes) 164 { 165 struct hdac_bus *bus = codec->bus; 166 struct drm_audio_component *acomp = bus->audio_component; 167 int port, pipe; 168 169 if (!acomp || !acomp->ops || !acomp->ops->get_eld) 170 return -ENODEV; 171 172 port = nid; 173 if (acomp->audio_ops && acomp->audio_ops->pin2port) { 174 port = acomp->audio_ops->pin2port(codec, nid); 175 if (port < 0) 176 return -EINVAL; 177 } 178 pipe = dev_id; 179 return acomp->ops->get_eld(acomp->dev, port, pipe, audio_enabled, 180 buffer, max_bytes); 181 } 182 EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld); 183 184 static int hdac_component_master_bind(struct device *dev) 185 { 186 struct drm_audio_component *acomp = hdac_get_acomp(dev); 187 int ret; 188 189 if (WARN_ON(!acomp)) 190 return -EINVAL; 191 192 ret = component_bind_all(dev, acomp); 193 if (ret < 0) 194 return ret; 195 196 if (WARN_ON(!(acomp->dev && acomp->ops))) { 197 ret = -EINVAL; 198 goto out_unbind; 199 } 200 201 /* pin the module to avoid dynamic unbinding, but only if given */ > 202 if (!__try_module_get(acomp->ops->owner, dev->driver->owner)) { 203 ret = -ENODEV; 204 goto out_unbind; 205 } 206 207 if (acomp->audio_ops && acomp->audio_ops->master_bind) { 208 ret = acomp->audio_ops->master_bind(dev, acomp); 209 if (ret < 0) 210 goto module_put; 211 } 212 213 complete_all(&acomp->master_bind_complete); 214 return 0; 215 216 module_put: 217 module_put(acomp->ops->owner); 218 out_unbind: 219 component_unbind_all(dev, acomp); 220 complete_all(&acomp->master_bind_complete); 221 222 return ret; 223 } 224 -- 0-DAY CI Kernel Test Service https://01.org/lkp
