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Mon, 9 Feb 2026 14:43:44 +0000 Message-ID: <5979bcd6-f066-418e-920a-8d127f921ba2@intel.com> Date: Mon, 9 Feb 2026 15:43:37 +0100 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3] ALSA: control: Verify put() result when in debug mode To: Takashi Iwai CC: , , , , , References: <20260206113250.207179-1-cezary.rojewski@intel.com> <87ms1m9htu.wl-tiwai@suse.de> Content-Language: en-US From: Cezary Rojewski In-Reply-To: <87ms1m9htu.wl-tiwai@suse.de> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: VI1PR04CA0060.eurprd04.prod.outlook.com (2603:10a6:802:2::31) To SN7PR11MB8283.namprd11.prod.outlook.com (2603:10b6:806:26c::16) Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN7PR11MB8283:EE_|SA3PR11MB7979:EE_ X-MS-Office365-Filtering-Correlation-Id: 36baa5cb-a724-4819-1415-08de67e99fcf X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|1800799024; 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Put some prefix to identify the problematic > control. Quick peak to what I'm currently logging - output from 'cat trace': # TASK-PID CPU# ||||| TIMESTAMP FUNCTION # | | | ||||| | | amixer-1177 [003] ..... 97.421022: snd_ctl_put_success: expected=0, actual=0 for ctl "Master Playback Volume" of numid=1 from dev="bdw_rt286", card="broadwell-rt286" amixer-1181 [003] ..... 99.065279: snd_ctl_put_success: expected=1, actual=1 for ctl "Master Playback Volume" of numid=1 from dev="bdw_rt286", card="broadwell-rt286" amixer-1185 [003] ..... 144.007205: snd_ctl_put_fail: expected=1, actual=0 for ctl "Loopback Mute" of numid=5 from dev="bdw_rt286", card="broadwell-rt286" The format for trace_snd_ctl_put event class: TP_printk("expected=%d, actual=%d for ctl \"%s\" of numid=%d from dev=\"%s\", card=\"%s\"\n", __entry->expected, __entry->actual, __get_str(kname), __entry->numid, __get_str(dname), __get_str(cname)) kname = kctl->id.name dname = dev_name(card->dev) cname = shortname or longname, shortname prio Is there something still to be added?