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From: Guillaume Ranquet <granquet@baylibre.com>
Cc: Sean Wang <sean.wang@mediatek.com>, Vinod Koul <vkoul@kernel.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2 3/3] dmaengine: mediatek: use GFP_NOWAIT instead of GFP_ATOMIC in prep_dma
Date: Thu, 13 May 2021 21:26:42 +0200	[thread overview]
Message-ID: <20210513192642.29446-4-granquet@baylibre.com> (raw)
In-Reply-To: <20210513192642.29446-1-granquet@baylibre.com>

As recommended by the doc in:
Documentation/drivers-api/dmaengine/provider.rst

Use GFP_NOWAIT to not deplete the emergency pool.

Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>

diff --git a/drivers/dma/mediatek/mtk-uart-apdma.c b/drivers/dma/mediatek/mtk-uart-apdma.c
index a09ab2dd3b46..375e7e647df6 100644
--- a/drivers/dma/mediatek/mtk-uart-apdma.c
+++ b/drivers/dma/mediatek/mtk-uart-apdma.c
@@ -349,7 +349,7 @@ static struct dma_async_tx_descriptor *mtk_uart_apdma_prep_slave_sg
 		return NULL;
 
 	/* Now allocate and setup the descriptor */
-	d = kzalloc(sizeof(*d), GFP_ATOMIC);
+	d = kzalloc(sizeof(*d), GFP_NOWAIT);
 	if (!d)
 		return NULL;
 
-- 
2.26.3


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  parent reply	other threads:[~2021-05-13 19:33 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-13 19:26 [PATCH v2 0/3] fix mediatek UART APDMA desc logic Guillaume Ranquet
2021-05-13 19:26 ` [PATCH v2 1/3] dmaengine: mediatek: free the proper desc in desc_free handler Guillaume Ranquet
2021-05-13 19:26 ` [PATCH v2 2/3] dmaengine: mediatek: do not issue a new desc if one is still current Guillaume Ranquet
2021-05-13 19:26 ` Guillaume Ranquet [this message]
2021-06-07  6:53 ` [PATCH v2 0/3] fix mediatek UART APDMA desc logic Vinod Koul

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