Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Kishon Vijay Abraham I <kishon@ti.com>
To:     Peter Ujfalusi <peter.ujfalusi@gmail.com>,
        Vinod Koul <vkoul@kernel.org>
CC:     <dmaengine@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        Vignesh Raghavendra <vigneshr@ti.com>,
        Kishon Vijay Abraham I <kishon@ti.com>
Subject: [PATCH v2 0/2] dmaengine: ti: k3-udma: Fix NULL pointer dereference error
Date:   Wed, 27 Oct 2021 11:22:52 +0530
Message-ID: <20211027055254.10912-3-kishon@ti.com>
In-Reply-To: <20211027055254.10912-1-kishon@ti.com>
References: <20211027055254.10912-1-kishon@ti.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

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