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The firmware advertises a "hwrm_cmd_max_timeout" value to the driver for NVRAM and coredump related functions that can take tens of seconds to complete. The driver polls for the operation to complete under mutex and may trigger hung task watchdog warning if the wait is too long. To warn the user about this, the driver currently prints a warning if this advertised value exceeds 40 seconds: Device requests max timeout of %d seconds, may trigger hung task watchdog Initially, we chose 40 seconds, well below the kernel's default CONFIG_DEFAULT_HUNG_TASK_TIMEOUT (120 seconds) to avoid triggering the hung task watchdog. But 60 seconds is the timeout on most production FW and cannot be reduced further. Change the driver's warning threshold to 60 seconds to avoid triggering this warning on all production devices. We also print the warning if the value exceeds CONFIG_DEFAULT_HUNG_TASK_TIMEOUT which may be set to architecture specific defaults as low as 10 seconds. Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com> Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com> Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com> Signed-off-by: Michael Chan <michael.chan@broadcom.com> Link: https://patch.msgid.link/20250417172448.1206107-2-michael.chan@broadcom.com Signed-off-by: Jakub Kicinski <kuba@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.