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commit e4de81f9e134c78ff7c75a00e43bd819643530d0 upstream. In commitb382380c0d("can: m_can: Add hrtimer to generate software interrupt") support for IRQ-less devices was added. Instead of an interrupt, the interrupt routine is called by a hrtimer-based polling loop. That patch forgot to change free_irq() to be only called for devices with IRQs. Fix this, by calling free_irq() conditionally only if an IRQ is available for the device (and thus has been requested previously). Fixes:b382380c0d("can: m_can: Add hrtimer to generate software interrupt") Reviewed-by: Simon Horman <horms@kernel.org> Reviewed-by: Markus Schneider-Pargmann <msp@baylibre.com> Link: https://patch.msgid.link/20240930-m_can-cleanups-v1-1-001c579cdee4@pengutronix.de Cc: <stable@vger.kernel.org> # v6.6+ Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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 Restructured Text 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.