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[84.115.213.130]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-489393ddd69sm10775525e9.10.2026.04.20.04.14.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 20 Apr 2026 04:14:09 -0700 (PDT) Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Mon, 20 Apr 2026 13:14:01 +0200 Message-Id: From: "Luca Weiss" To: "Dmitry Baryshkov" , "Luca Weiss" Cc: "Liam Girdwood" , "Mark Brown" , "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" , "Bartosz Golaszewski" , "Marcel Holtmann" , "Luiz Augusto von Dentz" , "Jeff Johnson" , "Bjorn Andersson" , "Konrad Dybcio" , "Manivannan Sadhasivam" , "Vinod Koul" , "Balakrishna Godavarthi" , "Matthias Kaehlcke" , , , , , , , , "Krzysztof Kozlowski" , "Bartosz Golaszewski" Subject: Re: [PATCH v3 3/8] wifi: ath10k: snoc: support powering on the device via pwrseq X-Mailer: aerc 0.21.0-0-g5549850facc2 References: <20260119-wcn3990-pwrctl-v3-0-948df19f5ec2@oss.qualcomm.com> <20260119-wcn3990-pwrctl-v3-3-948df19f5ec2@oss.qualcomm.com> In-Reply-To: On Sat Apr 18, 2026 at 9:38 PM CEST, Dmitry Baryshkov wrote: > On Thu, Apr 16, 2026 at 12:06:09PM +0200, Luca Weiss wrote: >> Hi Dmitry, >>=20 >> On Mon Jan 19, 2026 at 6:07 PM CET, Dmitry Baryshkov wrote: >> > The WCN39xx family of WiFi/BT chips incorporates a simple PMU, spreadi= ng >> > voltages over internal rails. Implement support for using powersequenc= er >> > for this family of ATH10k devices in addition to using regulators. >> > >> > Reviewed-by: Bartosz Golaszewski >> > Signed-off-by: Dmitry Baryshkov >> > --- >> > drivers/net/wireless/ath/ath10k/snoc.c | 53 +++++++++++++++++++++++++= +++++++-- >> > drivers/net/wireless/ath/ath10k/snoc.h | 3 ++ >> > 2 files changed, 53 insertions(+), 3 deletions(-) >> > >> > + ar_snoc->pwrseq =3D devm_pwrseq_get(&pdev->dev, "wlan"); >> > + if (IS_ERR(ar_snoc->pwrseq)) { >> > + ret =3D PTR_ERR(ar_snoc->pwrseq); >> > + ar_snoc->pwrseq =3D NULL; >> > + if (ret !=3D -EPROBE_DEFER) >> > + goto err_free_irq; >>=20 >> I'm fairly sure this is now broken with CONFIG_POWER_SEQUENCING=3Dn sinc= e >> then pwrseq_get() is returning ERR_PTR(-ENOSYS) which is not handled >> here. >>=20 >> I'm observing my ath10k_snoc is now failing to probe "with error -38" >> which definitely seems to be related, but I haven't debugged it further >> yet. > > Posted https://patch.msgid.link/20260418-ath10k-snoc-pwrseq-v1-1-832594ba= 3294@oss.qualcomm.com Thanks Dmitry!