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charset=US-ASCII X-Spamd-Result: default: False [-3.26 / 50.00]; BAYES_HAM(-2.96)[99.83%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-0.998]; MIME_GOOD(-0.10)[text/plain]; MIME_TRACE(0.00)[0:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; ARC_NA(0.00)[]; RCVD_TLS_ALL(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; RCPT_COUNT_FIVE(0.00)[6]; FROM_HAS_DN(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FROM_EQ_ENVFROM(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo] Message-ID-Hash: RYI66IFYUYNKAPYG5R2WMPIKMEEZRVIN X-Message-ID-Hash: RYI66IFYUYNKAPYG5R2WMPIKMEEZRVIN X-MailFrom: tiwai@suse.de X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.9 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: On Tue, 18 Jun 2024 15:00:11 +0200, Simon Trimmer wrote: > > It is possible that during system boot when there multiple devices > attempting simultaneous initialization on a slow control bus the > download of firmware and tuning data may take a user perceivable amount > of time (a slow I2C bus with 4 amps this work could take over 2 > seconds). > > Adopt a pattern used in the ASoC driver and perform this activity in a > background thread so that interactive performance is not impaired. The > system_long_wq is a parallel workqueue and driver instances will perform > their firmware downloads in parallel to make best use of available bus > bandwidth. > > Signed-off-by: Simon Trimmer Thanks, applied now to for-next branch. Takashi