From: Andy Shevchenko <andriy.shevchenko@intel.com>
To: Antoniu Miclaus <antoniu.miclaus@analog.com>
Cc: "Lars-Peter Clausen" <lars@metafoo.de>,
"Michael Hennerich" <Michael.Hennerich@analog.com>,
"Jonathan Cameron" <jic23@kernel.org>,
"David Lechner" <dlechner@baylibre.com>,
"Nuno Sá" <nuno.sa@analog.com>,
"Andy Shevchenko" <andy@kernel.org>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Olivier Moysan" <olivier.moysan@foss.st.com>,
"Mark Brown" <broonie@kernel.org>,
"Sebastian Reichel" <sebastian.reichel@collabora.com>,
linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org
Subject: Re: [PATCH v4 1/5] spi: allow ancillary devices to share parent's chip selects
Date: Tue, 24 Feb 2026 12:09:28 +0200 [thread overview]
Message-ID: <aZ142CVjMQ8Dypnb@smile.fi.intel.com> (raw)
In-Reply-To: <20260223162110.156746-2-antoniu.miclaus@analog.com>
On Mon, Feb 23, 2026 at 06:21:00PM +0200, Antoniu Miclaus wrote:
> When registering an ancillary SPI device, the current code flags a chip
> select conflict with the parent device. This happens because the
> ancillary device intentionally uses one of the parent's chip selects,
> but __spi_add_device() checks against all existing devices including
> the parent.
>
> Allow this by passing the parent device pointer to __spi_add_device()
> and skipping the conflict check when the existing device is the parent.
Isn't this already applied?
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2026-02-24 10:09 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-23 16:20 [PATCH v4 0/5] iio: adc: ad4080: add support for AD4880 dual-channel ADC Antoniu Miclaus
2026-02-23 16:21 ` [PATCH v4 1/5] spi: allow ancillary devices to share parent's chip selects Antoniu Miclaus
2026-02-24 10:09 ` Andy Shevchenko [this message]
2026-02-24 11:12 ` Miclaus, Antoniu
2026-02-24 11:24 ` Andy Shevchenko
2026-02-24 11:41 ` Miclaus, Antoniu
2026-02-23 16:21 ` [PATCH v4 2/5] spi: add devm_spi_new_ancillary_device() Antoniu Miclaus
2026-02-23 16:21 ` [PATCH v4 3/5] iio: backend: add devm_iio_backend_get_by_index() Antoniu Miclaus
2026-02-24 10:16 ` Andy Shevchenko
2026-02-28 19:05 ` Jonathan Cameron
2026-02-23 16:21 ` [PATCH v4 4/5] dt-bindings: iio: adc: ad4080: add AD4880 support Antoniu Miclaus
2026-02-23 16:21 ` [PATCH v4 5/5] iio: adc: ad4080: add support for AD4880 dual-channel ADC Antoniu Miclaus
2026-02-24 10:24 ` Andy Shevchenko
2026-02-28 19:10 ` Jonathan Cameron
2026-02-25 19:09 ` (subset) [PATCH v4 0/5] " Mark Brown
2026-02-28 19:00 ` Jonathan Cameron
2026-02-28 21:35 ` Mark Brown
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