linux-kernel - [PATCH 4.19 037/293] crypto: omap-sham - clear dma flags only after omap_sham_update_dma

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Message-Id: <20210920163934.550299805@linuxfoundation.org>
Date:   Mon, 20 Sep 2021 18:39:59 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Lokesh Vutla <lokeshvutla@...com>,
        Tero Kristo <kristo@...nel.org>,
        Tony Lindgren <tony@...mide.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 037/293] crypto: omap-sham - clear dma flags only after omap_sham_update_dma_stop()

From: Tony Lindgren <tony@...mide.com>

[ Upstream commit fe28140b3393b0ba1eb95cc109f974a7e58b26fd ]

We should not clear FLAGS_DMA_ACTIVE before omap_sham_update_dma_stop() is
done calling dma_unmap_sg(). We already clear FLAGS_DMA_ACTIVE at the
end of omap_sham_update_dma_stop().

The early clearing of FLAGS_DMA_ACTIVE is not causing issues as we do not
need to defer anything based on FLAGS_DMA_ACTIVE currently. So this can be
applied as clean-up.

Cc: Lokesh Vutla <lokeshvutla@...com>
Cc: Tero Kristo <kristo@...nel.org>
Signed-off-by: Tony Lindgren <tony@...mide.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/crypto/omap-sham.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index 4d31ef472436..180f2f61b8fb 100644
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c
@@ -1739,7 +1739,7 @@ static void omap_sham_done_task(unsigned long data)
 		if (test_and_clear_bit(FLAGS_OUTPUT_READY, &dd->flags))
 			goto finish;
 	} else if (test_bit(FLAGS_DMA_READY, &dd->flags)) {
-		if (test_and_clear_bit(FLAGS_DMA_ACTIVE, &dd->flags)) {
+		if (test_bit(FLAGS_DMA_ACTIVE, &dd->flags)) {
 			omap_sham_update_dma_stop(dd);
 			if (dd->err) {
 				err = dd->err;
-- 
2.30.2