From: Guillaume Ranquet <granquet@baylibre.com>
To: unlisted-recipients:; (no To-header on input)
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 0/3] fix mediatek UART APDMA desc logic
Date: Thu, 13 May 2021 21:26:39 +0200 [thread overview]
Message-ID: <20210513192642.29446-1-granquet@baylibre.com> (raw)
The logic used in the apdma driver to handle the virt_dma_desc caused
panics and various memory corruption.
This is an attempt at sanitizing the logic a bit.
Sending a v2 as the previous mails were ill formatted and not threaded
properly.
I'm also removing the last patch from the series as the fix is
alread on mainline.
Guillaume Ranquet (3):
dmaengine: mediatek: free the proper desc in desc_free handler
dmaengine: mediatek: do not issue a new desc if one is still current
dmaengine: mediatek: use GFP_NOWAIT instead of GFP_ATOMIC in prep_dma
drivers/dma/mediatek/mtk-uart-apdma.c | 27 ++++++++++++++-------------
1 file changed, 14 insertions(+), 13 deletions(-)
--
2.26.3
next reply other threads:[~2021-05-13 19:27 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-13 19:26 Guillaume Ranquet [this message]
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 ` [PATCH v2 3/3] dmaengine: mediatek: use GFP_NOWAIT instead of GFP_ATOMIC in prep_dma Guillaume Ranquet
2021-06-07 6:53 ` [PATCH v2 0/3] fix mediatek UART APDMA desc logic Vinod Koul
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