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109ff65493
Mark the interrupt as IRQF_SHARED to permit multiple counter channels to
share the same TCB IRQ line.
Each Timer/Counter Block (TCB) instance shares a single IRQ line among its
three internal channels. When multiple counter channels (e.g., counter@0
and counter@1) within the same TCB are enabled, the second call to
devm_request_irq() fails because the IRQ line is already requested by the
first channel.
Cc: stable@vger.kernel.org
Fixes: e5d5813968 ("counter: microchip-tcb-capture: Add IRQ handling")
Signed-off-by: Dharma Balasubiramani <dharma.b@microchip.com>
Reviewed-by: Kamel Bouhara <kamel.bouhara@bootlin.com>
Reviewed-by: Bence Csókás <bence98@sch.bme.hu>
Link: https://lore.kernel.org/r/20251006-microchip-tcb-v1-1-09c19181bb4a@microchip.com
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.