staging: ccree: break send_request and fix ret val

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The send_request() function was handling both synchronous
and asynchronous invocations, but were not handling
the asynchronous case, which may be called in an atomic
context, properly as it was sleeping.

Start to fix the problem by breaking up the two use
cases to separate functions calling a common internal
service function and return error instead of sleeping
for the asynchronous case.

The next patch will complete the fix by implementing
proper backlog handling.

Fixes: abefd6741d ("staging: ccree: introduce CryptoCell HW driver").
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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This commit is contained in:

Gilad Ben-Yossef 2018-01-07 12:14:20 +00:00 • committed by Greg Kroah-Hartman

parent 266844f13e

commit 0f70db7033

5 changed files with 128 additions and 94 deletions

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6

drivers/staging/ccree/ssi_aead.c

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3

drivers/staging/ccree/ssi_cipher.c

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22

drivers/staging/ccree/ssi_hash.c

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180

drivers/staging/ccree/ssi_request_mgr.c

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11

drivers/staging/ccree/ssi_request_mgr.h

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