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Thu, 22 Jan 2026 14:20:57 -0800 (PST) Precedence: bulk X-Mailing-List: linux-kernel@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: Thu, 22 Jan 2026 17:20:55 -0500 Message-Id: Cc: "Andy Shevchenko" , "Lars-Peter Clausen" , "Michael Hennerich" , "Benson Leung" , "Antoniu Miclaus" , "Gwendal Grignou" , "Shrikant Raskar" , "Per-Daniel Olsson" , "David Lechner" , =?utf-8?q?Nuno_S=C3=A1?= , "Andy Shevchenko" , "Guenter Roeck" , "Jonathan Cameron" , , , Subject: Re: [PATCH v5 2/7] iio: core: Refactor iio_device_claim_direct() implementation From: "Kurt Borja" To: "Jonathan Cameron" , "Kurt Borja" X-Mailer: aerc 0.21.0-0-g5549850facc2 References: <20260120-lock-impr-v5-0-d4d22347041f@gmail.com> <20260120-lock-impr-v5-2-d4d22347041f@gmail.com> <20260122190401.510234c4@jic23-huawei> In-Reply-To: <20260122190401.510234c4@jic23-huawei> On Thu Jan 22, 2026 at 2:04 PM -05, Jonathan Cameron wrote: > On Tue, 20 Jan 2026 01:20:42 -0500 > Kurt Borja wrote: > >> In order to eventually unify the locking API, implement >> iio_device_claim_direct() fully inline, with the use of >> __iio_dev_mode_lock(), which takes care of sparse annotations. >>=20 >> Reviewed-by: David Lechner >> Reviewed-by: Nuno S=C3=A1 >> Signed-off-by: Kurt Borja > > So sparse does change what it moans about with this one in precisely one = instance > There are 9 false positives with Al Viro's updated sparse - I haven't che= cked the > original one recently. Hi Jonathan, Upstream sparse is kinda broken right now. I'm not getting any false positives on the locking stuff but a BUNCH of "error: bad constant expresion" on MODULE_*() macros so I don't fully trust it. I know at least one subsystem maintainer is getting these too so I guess it's an upstream problem. > > Anyhow,=20 > drivers/iio/adc/ad7173.c:416:12: warning: context imbalance in 'ad7173_se= t_filter_type' - different lock contexts for basic block > becomes > > drivers/iio/adc/ad7173.c:425:9: warning: context imbalance in 'ad7173_set= _filter_type' - unexpected unlock = =20 This one is interesting because I can't figure out why sparse hates it. > > Lets go with a bit meh for that and move on... > --=20 Thanks, ~ Kurt