Messages in this thread Patch in this message | | | From | Gilad Ben-Yossef <> | Subject | [PATCH 10/24] staging: ccree: document spinlock usage | Date | Mon, 13 Nov 2017 14:45:38 +0000 |
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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> --- drivers/staging/ccree/ssi_request_mgr.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/staging/ccree/ssi_request_mgr.c b/drivers/staging/ccree/ssi_request_mgr.c index 65c4d9f..1d9c038 100644 --- a/drivers/staging/ccree/ssi_request_mgr.c +++ b/drivers/staging/ccree/ssi_request_mgr.c @@ -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; -- 2.7.4
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