b645fc696b
Newline characters will be taken into account for the firmware search path parameter, warn users about that and provide an example using 'echo -n' such that it clarifies the typical use of that parameter. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20230402135423.3235-1-f.fainelli@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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1.1 KiB
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32 lines
1.1 KiB
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=====================
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Firmware search paths
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=====================
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The following search paths are used to look for firmware on your
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root filesystem.
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* fw_path_para - module parameter - default is empty so this is ignored
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* /lib/firmware/updates/UTS_RELEASE/
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* /lib/firmware/updates/
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* /lib/firmware/UTS_RELEASE/
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* /lib/firmware/
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The module parameter ''path'' can be passed to the firmware_class module
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to activate the first optional custom fw_path_para. The custom path can
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only be up to 256 characters long. The kernel parameter passed would be:
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* 'firmware_class.path=$CUSTOMIZED_PATH'
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There is an alternative to customize the path at run time after bootup, you
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can use the file:
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* /sys/module/firmware_class/parameters/path
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You would echo into it your custom path and firmware requested will be searched
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for there first. Be aware that newline characters will be taken into account
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and may not produce the intended effects. For instance you might want to use:
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echo -n /path/to/script > /sys/module/firmware_class/parameters/path
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to ensure that your script is being used.
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