linux-kernel - [PATCH V2 0/3] soc: ti: Fix crash in error path when DMA channel open fails

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Message-ID: <20250930121609.158419-1-nm@ti.com>
Date: Tue, 30 Sep 2025 07:16:06 -0500
From: Nishanth Menon <nm@...com>
To: Uwe Kleine-König <u.kleine-koenig@...libre.com>,
        Paolo
 Abeni <pabeni@...hat.com>, Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet
	<edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Andrew Lunn
	<andrew+netdev@...n.ch>
CC: Santosh Shilimkar <ssantosh@...nel.org>, Simon Horman <horms@...nel.org>,
        Siddharth Vadapalli <s-vadapalli@...com>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <netdev@...r.kernel.org>, Nishanth Menon <nm@...com>
Subject: [PATCH V2 0/3] soc: ti: Fix crash in error path when DMA channel open fails

Hi,

This is a respin of V1 of the series, to address a crash seen in
kernelci.org automated testing[1].

Changes in V2:
- Took Simon's suggestion in refactoring code to make
  knav_dma_open_channel return NULL and fix the callers accordingly.

Since the series does have inter-dependencies, I suggest the full series
could either go via net tree OR via SoC tree (if net maintainers dont
mind acking it). Personally, I have no issues of getting it via the net
tree.

I dropped the fixes tag here, any better suggestion to hit stable will
be nice to know, since the code is refactored a bit here.

V1: https://lore.kernel.org/all/20250926150853.2907028-1-nm@ti.com/

[1] https://dashboard.kernelci.org/log-viewer?itemId=ti%3A2eb55ed935eb42c292e02f59&org=ti&type=test&url=http%3A%2F%2Ffiles.kernelci.org%2F%2Fti%2Fmainline%2Fmaster%2Fv6.17-rc7-59-gbf40f4b87761%2Farm%2Fmulti_v7_defconfig%2BCONFIG_EFI%3Dy%2BCONFIG_ARM_LPAE%3Dy%2Bdebug%2Bkselftest%2Btinyconfig%2Fgcc-12%2Fbaseline-nfs-boot.nfs-k2hk-evm.txt.gz
Nishanth Menon (3):
  net: ethernet: ti: netcp: Handle both ERR_PTR and NULL from
    knav_dma_open_channel
  soc: ti: knav_dma: Make knav_dma_open_channel return NULL on error
  net: ethernet: ti: Remove IS_ERR_OR_NULL checks for
    knav_dma_open_channel

 drivers/net/ethernet/ti/netcp_core.c | 10 +++++-----
 drivers/soc/ti/knav_dma.c            | 14 +++++++-------
 2 files changed, 12 insertions(+), 12 deletions(-)

-- 
2.47.0