wifi: wilc1000: document SRCU usage instead of SRCU
Commit f236464f ("wifi: wilc1000: convert list management to RCU") attempted to convert SRCU to RCU usage, assuming it was not really needed. The runtime issues that arose after merging it showed that there are code paths involving sleeping functions, and removing those would need some heavier driver rework. Add some documentation about SRCU need to make sure that any future developer do not miss some use cases if tempted to convert back again to RCU. Signed-off-by: Alexis Lothoré <alexis.lothore@bootlin.com> Signed-off-by: Kalle Valo <kvalo@kernel.org> Link: https://msgid.link/20240528-wilc_revert_srcu_to_rcu-v1-3-bce096e0798c@bootlin.com
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