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Sun, 4 Oct 2026 18:22:38 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id ZaprN22ZwmoCTwAAD6G6ig (envelope-from ); Sun, 04 Oct 2026 18:22:38 +0000 Date: Sun, 04 Oct 2026 20:22:33 +0200 Message-ID: <87ece5iavq.wl-tiwai@suse.de> From: Takashi Iwai To: HyeongJun An Cc: Mark Brown , Jaroslav Kysela , Takashi Iwai , Shuah Khan , linux-sound@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/2] selftests/alsa: Catch writes that silently change other controls In-Reply-To: <20260930111534.3782264-1-sammiee5311@gmail.com> References: <20260930111534.3782264-1-sammiee5311@gmail.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/30.2 Mule/6.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Spamd-Result: default: False [-3.51 / 50.00]; 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DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns] X-Spam-Score: -3.51 X-Spam-Level: X-Rspamd-Action: no action X-Rspamd-Queue-Id: 50BDC21D45 X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Spam-Flag: NO On Wed, 30 Sep 2026 13:15:32 +0200, HyeongJun An wrote: > > Mark asked for this in the es8316 thread [1]: have mixer-test check > for other controls changing when one is written. Patch 2 adds that. > > Patch 1 fixes a bug that testing patch 2 turned up. With a driver that > notifies a neighbour with a value event, wait_for_event() returns on > the neighbour's event and the next test reports a spurious one. > > The cost is two extra writes per control and a read of every other > control on the card after each. On the two cards here, 39 controls in > all, the run time does not move. I have no card with hundreds of > controls to measure against the 45 second kselftest timeout. > > [1] https://lore.kernel.org/all/0fefbfe1-021b-46b2-8945-15956e75e37f@sirena.org.uk/ > > HyeongJun An (2): > selftests/alsa: Do not take another control's event as our own > selftests/alsa: Check that a write does not silently change other > controls Applied both to for-next branch. Thanks. Takashi