linux-kernel - [PATCH v2 0/2] dmaengine: ti: k3-udma: Fix NULL pointer dereference error

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Message-ID: <20211027055254.10912-3-kishon@ti.com>
Date:   Wed, 27 Oct 2021 11:22:52 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Peter Ujfalusi <peter.ujfalusi@...il.com>,
        Vinod Koul <vkoul@...nel.org>
CC:     <dmaengine@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Vignesh Raghavendra <vigneshr@...com>,
        Kishon Vijay Abraham I <kishon@...com>
Subject: [PATCH v2 0/2] dmaengine: ti: k3-udma: Fix NULL pointer dereference error

NULL pointer de-reference error was observed when all the PCIe endpoint
functions (22 function in J721E) request a DMA channel. The issue was
specfically observed in BCDMA (Block copy DMA) but the issue is
applicable in PKTDMA as well.

Changes from v1:
1) Split the patch for BCDMA and PKTDMA separately
2) Fixed the return value of udma_get_rflow() to 0.
3) Removed the fixes tag as the patches does not directly apply to the
commits.

v1 => https://lore.kernel.org/r/20210209090036.30832-1-kishon@ti.com

Kishon Vijay Abraham I (2):
  dmaengine: ti: k3-udma: Fix NULL pointer dereference error for BCDMA
  dmaengine: ti: k3-udma: Fix NULL pointer dereference error for PKTDMA

 drivers/dma/ti/k3-udma.c | 32 ++++++++++++++++++++++++++------
 1 file changed, 26 insertions(+), 6 deletions(-)

-- 
2.17.1