Commit da4e52ac authored Nov 13, 2017 by Gilad Ben-Yossef Committed by Greg Kroah-Hartman Nov 27, 2017

staging: ccree: document spinlock usage



Document spinlock usage to protect against concurrent
access to HW register which must occur a single
request at a time.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent add496c0

drivers/staging/ccree/ssi_request_mgr.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -43,6 +43,9 @@ struct ssi_request_mgr_handle {
		u32 req_queue_tail;
		u32 axi_completed;
		u32 q_free_slots;
		/* This lock protects access to HW register
		* that must be single request at a time
		*/
		spinlock_t hw_lock;
		struct cc_hw_desc compl_desc;
		u8 *dummy_comp_buff;

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