linux-kernel - [PATCH 00/15] dmaengine: fix device leaks

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Message-ID: <20251117161258.10679-1-johan@kernel.org>
Date: Mon, 17 Nov 2025 17:12:42 +0100
From: Johan Hovold <johan@...nel.org>
To: Vinod Koul <vkoul@...nel.org>
Cc: Ludovic Desroches <ludovic.desroches@...rochip.com>,
	Viresh Kumar <vireshk@...nel.org>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Vinicius Costa Gomes <vinicius.gomes@...el.com>,
	Dave Jiang <dave.jiang@...el.com>,
	Vladimir Zapolskiy <vz@...ia.com>,
	Piotr Wojtaszczyk <piotr.wojtaszczyk@...esys.com>,
	Amélie Delaunay <amelie.delaunay@...s.st.com>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Peter Ujfalusi <peter.ujfalusi@...il.com>,
	dmaengine@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Johan Hovold <johan@...nel.org>
Subject: [PATCH 00/15] dmaengine: fix device leaks

The dmaengine drivers pretty consistently failed to release references
taken when looking up devices using of_find_device_by_node() and similar
helpers.

Included are also two OF node leak fixes and a couple of related
cleanups.

Johan


Johan Hovold (15):
  dmaengine: at_hdmac: fix device leak on of_dma_xlate()
  dmaengine: bcm-sba-raid: fix device leak on probe
  dmaengine: cv1800b-dmamux: fix device leak on route allocation
  dmaengine: dw: dmamux: fix OF node leak on route allocation failure
  dmaengine: idxd: fix device leaks on compat bind and unbind
  dmaengine: lpc18xx-dmamux: fix device leak on route allocation
  dmaengine: lpc32xx-dmamux: fix device leak on route allocation
  dmaengine: sh: rz-dmac: fix device leak on probe failure
  dmaengine: stm32: dmamux: fix device leak on route allocation
  dmaengine: stm32: dmamux: fix OF node leak on route allocation failure
  dmaengine: stm32: dmamux: clean up route allocation error labels
  dmaengine: ti: dma-crossbar: fix device leak on dra7x route allocation
  dmaengine: ti: dma-crossbar: fix device leak on am335x route
    allocation
  dmaengine: ti: dma-crossbar: clean up dra7x route allocation error
    paths
  dmaengine: ti: k3-udma: fix device leak on udma lookup

 drivers/dma/at_hdmac.c           |  9 ++++++--
 drivers/dma/bcm-sba-raid.c       |  6 +++++-
 drivers/dma/cv1800b-dmamux.c     | 17 +++++++++-------
 drivers/dma/dw/rzn1-dmamux.c     |  4 +++-
 drivers/dma/idxd/compat.c        | 23 +++++++++++++++++----
 drivers/dma/lpc18xx-dmamux.c     | 19 ++++++++++++-----
 drivers/dma/lpc32xx-dmamux.c     | 19 ++++++++++++-----
 drivers/dma/sh/rz-dmac.c         | 13 ++++++++++--
 drivers/dma/stm32/stm32-dmamux.c | 31 +++++++++++++++++-----------
 drivers/dma/ti/dma-crossbar.c    | 35 ++++++++++++++++++--------------
 drivers/dma/ti/k3-udma-private.c |  2 +-
 11 files changed, 123 insertions(+), 55 deletions(-)

-- 
2.51.0