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crypto: atmel-aes - fix atmel_aes_handle_queue() 

This patch fixes the value returned by atmel_aes_handle_queue(), which
could have been wrong previously when the crypto request was started
synchronously but became asynchronous during the ctx->start() call.

Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Cyrille Pitchen 2017-01-26 17:07:55 +01:00 committed by Herbert Xu
parent 81d8750b2b
commit a1f613f167
1 changed files with 5 additions and 2 deletions
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7
drivers/crypto/atmel-aes.c
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@ -879,6 +879,7 @@ static int atmel_aes_handle_queue(struct atmel_aes_dev *dd,
struct crypto_async_request *areq, *backlog;
struct atmel_aes_base_ctx *ctx;
unsigned long flags;
bool start_async;
int err, ret = 0;
spin_lock_irqsave(&dd->lock, flags);
@ -904,10 +905,12 @@ static int atmel_aes_handle_queue(struct atmel_aes_dev *dd,
dd->areq = areq;
dd->ctx = ctx;
dd->is_async = (areq != new_areq);
start_async = (areq != new_areq);
dd->is_async = start_async;
/* WARNING: ctx->start() MAY change dd->is_async. */
err = ctx->start(dd);
return (dd->is_async) ? ret : err;
return (start_async) ? ret : err;
}