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Wed, 21 Oct 2026 06:09:44 -0700 (PDT) Received: from localhost ([2a02:8308:b092:fd00:d28d:9c92:be85:1c3a]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-48e25828cd1sm5360894f8f.22.2026.10.21.06.09.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Oct 2026 06:09:44 -0700 (PDT) Date: Wed, 21 Oct 2026 15:09:43 +0200 From: Jan Remes To: Andy Shevchenko Cc: Jonathan Cameron , David Lechner , Nuno =?utf-8?B?U8Oh?= , Andy Shevchenko , Joe Sandom , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, martin.triska@mycroftmind.com, Jan Remes Subject: Re: [PATCH v2 0/4] iio: light: tsl2591: fix lux calculation and precision, add I2C ID table, report saturation Message-ID: Mail-Followup-To: Andy Shevchenko , Jonathan Cameron , David Lechner , Nuno =?utf-8?B?U8Oh?= , Andy Shevchenko , Joe Sandom , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, martin.triska@mycroftmind.com, Jan Remes References: <20261014141650.259929-1-ciakval@gmail.com> <20261017031411.05dee323@jic23-hlaptop> X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Wed, 21 Oct 2026 11:00:56 +0300, Andy Shevchenko wrote: > > On Tue, Oct 20, 2026 at 01:31:51PM +0200, Jan Remes wrote: > > On Mon, 19 Oct 2026 11:50:10 +0300, Andy Shevchenko wrote: > > > On Mon, Oct 19, 2026 at 10:17:08AM +0200, Jan Remes wrote: > > > > On Sat, 17 Oct 2026 03:14:11 +0100, Jonathan Cameron wrote: > > ... > > > > > FWIW, I don't think it to be very urgent, as people probably don't use > > > > it on x86-64 (seeing both as it had only DT probe support and that > > > > impacted users are likely to have noticed the oops). > > > > > > What do you mean by the second part of the sentence? It's as easy to use on > > > ACPI platforms as on DT, we have so nice trick called PRP0001, which allows to > > > enumerate "OF-only" drivers on ACPI platforms via SSDT overlays (or other means > > > of DSDT/SSDT provisioning). > > > I did not know about the PRP0001 (thanks), so please disregard that > > argument. Still, I believe x86 users to be few if any, since the oops is > > quite easy to trigger > > True. > > > and AFAIK most x86 distro kernels ship without CONFIG_OF. > > How is this relevant? This driver doesn't use any #ifdef CONFIG_OF or alike, > so most likely the driver is available for x86 as well. I thought that CONFIG_OF was needed in order to be able to probe a device using the driver's OF table. TIL that missing CONFIG_OF prevents only manual probing (`echo "tsl2519 0x29" > .../new_device`) but not the ACPI mechanism. So: 1. Please ignore that argument 2. The wording of my Patch 2 commit message is not correct ("cannot be probed on a kernel with CONFIG_OF disabled"), I can send a v3 if that's preferable. Thanks for getting me to learn a bit more. Best regards, Jan Remes