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charset=US-ASCII Message-ID-Hash: WOEBIRCJ6BDG5WZMGKMXMAMYB4EIO2OW X-Message-ID-Hash: WOEBIRCJ6BDG5WZMGKMXMAMYB4EIO2OW 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: 3.3.8 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, 13 Jun 2023 12:16:37 +0200, Mark Brown wrote: > > On Tue, Jun 13, 2023 at 09:45:11AM +0200, Takashi Iwai wrote: > > regcache_maple_sync() tries to sync all cached values no matter > > whether it's writable or not. OTOH, regache_sync_val() does care the > > wrtability and returns -EIO for a read-only register. This results in > > an error message like: > > snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2f0009. -5 > > and the sync loop is aborted incompletely. > > > > This patch adds the writable register check in the loop for addressing > > the bug. > > This should be in _needs_sync(). I thought it's a different logic? regacahe_reg_needs_sync() checks only whether it's a default value, and other call paths already check regmap_writeable(). But I can put the check there instead if you still prefer, too. thanks, Takashi