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crypto: cavium/nitrox - Invoke callback after DMA unmap

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In process_response_list() invoke the callback handler after unmapping
the DMA buffers. It ensures DMA data is synced form device to cpu
before the client code access the data from callback handler.

Fixes: c9613335bf ("crypto: cavium/nitrox - Added AEAD cipher support")
Signed-off-by: Nagadheeraj Rottela <rnagadheeraj@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Nagadheeraj Rottela 2019-01-14 13:52:24 +00:00 committed by Herbert Xu
parent d45a90cb5d
commit 356690d029
1 changed files with 6 additions and 4 deletions
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10
drivers/crypto/cavium/nitrox/nitrox_reqmgr.c
View file

@ -537,6 +537,8 @@ static void process_response_list(struct nitrox_cmdq *cmdq)
struct nitrox_device *ndev = cmdq->ndev;
struct nitrox_softreq *sr;
int req_completed = 0, err = 0, budget;
completion_t callback;
void *cb_arg;
/* check all pending requests */
budget = atomic_read(&cmdq->pending_count);
@ -564,13 +566,13 @@ static void process_response_list(struct nitrox_cmdq *cmdq)
smp_mb__after_atomic();
/* remove from response list */
response_list_del(sr, cmdq);
/* ORH error code */
err = READ_ONCE(*sr->resp.orh) & 0xff;
if (sr->callback)
sr->callback(sr->cb_arg, err);
callback = sr->callback;
cb_arg = sr->cb_arg;
softreq_destroy(sr);
if (callback)
callback(cb_arg, err);
req_completed++;
}