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The ISR calls dev_pm_opp_find_bw_ceil(), which can return EINVAL, ERANGE or ENODEV, and if that one fails with ERANGE, then it tries again with floor dev_pm_opp_find_bw_floor(). In theory, following error paths are possible: 1. First dev_pm_opp_find_bw_ceil() failed with an error different than ERANGE, 2. Any error from second dev_pm_opp_find_bw_floor(). However in practice this would mean that there are no suitable OPPs at all, which is already being checked in the drivers probe() function. This is impossible condition. Relying however in the interrupt handler bwmon_intr_thread() on preconditions checked in probe() is not easy to follow from code readability and is very difficult to handle in static analysis, thus let's make the code just obvious to silence warning reported by Smatch: icc-bwmon.c:693 bwmon_intr_thread() error: 'target_opp' dereferencing possible ERR_PTR() Reported-by: Dan Carpenter <dan.carpenter@linaro.org> Closes: https://lore.kernel.org/r/aJTNEQsRFjrFknG9@stanley.mountain/ Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20250818123851.111326-2-krzysztof.kozlowski@linaro.org Signed-off-by: Bjorn Andersson <andersson@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.