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Thu, 05 Mar 2026 23:01:49 -0800 (PST) Message-ID: <198f569078f4a6e3b4e8ad080a94cd336c1e39bf.camel@linaro.org> Subject: Re: [PATCH v3 07/13] mfd: sec: set DMA coherent mask From: =?ISO-8859-1?Q?Andr=E9?= Draszik To: Kaustabh Chakraborty , Lee Jones , Pavel Machek , Rob Herring , Krzysztof Kozlowski , Conor Dooley , MyungJoo Ham , Chanwoo Choi , Sebastian Reichel , Krzysztof Kozlowski , Alexandre Belloni , Jonathan Corbet , Shuah Khan , Nam Tran Cc: linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-rtc@vger.kernel.org, linux-doc@vger.kernel.org Date: Fri, 06 Mar 2026 07:03:10 +0000 In-Reply-To: <20260225-s2mu005-pmic-v3-7-b4afee947603@disroot.org> References: <20260225-s2mu005-pmic-v3-0-b4afee947603@disroot.org> <20260225-s2mu005-pmic-v3-7-b4afee947603@disroot.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.56.2-2+build4 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Wed, 2026-02-25 at 00:45 +0530, Kaustabh Chakraborty wrote: > Kernel logs are filled with "DMA mask not set" messages for every > sub-device. The device does not use DMA for communication, so these > messages are useless. Disable the coherent DMA mask for the PMIC device, > which is also propagated to sub-devices. >=20 > Signed-off-by: Kaustabh Chakraborty > --- > =C2=A0drivers/mfd/sec-i2c.c | 3 +++ > =C2=A01 file changed, 3 insertions(+) >=20 > diff --git a/drivers/mfd/sec-i2c.c b/drivers/mfd/sec-i2c.c > index d8609886fcc80..9fa1449a4f6eb 100644 > --- a/drivers/mfd/sec-i2c.c > +++ b/drivers/mfd/sec-i2c.c > @@ -177,6 +177,9 @@ static int sec_pmic_i2c_probe(struct i2c_client *clie= nt) > =C2=A0 return dev_err_probe(&client->dev, PTR_ERR(regmap_pmic), > =C2=A0 =C2=A0=C2=A0=C2=A0=C2=A0 "regmap init failed\n"); > =C2=A0 > + client->dev.coherent_dma_mask =3D 0; > + client->dev.dma_mask =3D &client->dev.coherent_dma_mask; > + This should probably move into sec-common.c as it should apply to all transports. Cheers, A.