From: "Diogo Ivo (Schneider Electric)" <diogo.ivo@bootlin.com>
To: Mark Brown <broonie@kernel.org>,
Matthew Gerlach <matthew.gerlach@altera.com>,
Khairul Anuar Romli <khairul.anuar.romli@altera.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Dan Carpenter <dan.carpenter@linaro.org>
Cc: miquel.raynal@bootlin.com, thomas.petazzoni@bootlin.com,
Pascal EBERHARD <pascal.eberhard@se.com>,
linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org,
"Diogo Ivo (Schneider Electric)" <diogo.ivo@bootlin.com>,
stable@vger.kernel.org
Subject: [PATCH 0/2] spi: cadence-quadspi: fix probe error path and remove
Date: Fri, 31 Jul 2026 12:53:45 +0200 [thread overview]
Message-ID: <20260731-cqspi-pm_runtime-v1-0-ff0bfc9e8e56@bootlin.com> (raw)
This series fixes two resource leaks in the cadence-quadspi driver's
probe error path and remove callback.
Patch 1 fixes an imbalanced pm_runtime_enable()/pm_runtime_disable()
pair: when probe defers after cqspi_request_mmap_dma(),
pm_runtime_disable() is called without a prior pm_runtime_enable().
It also adds the missing pm_runtime_dont_use_autosuspend() in both
the probe error path and the remove callback and a missing
pm_runtime_put_noidle() in the probe error path. This consolidates
fixes from upstream commits 5ff4d5d1af0c and 5e8bb0cc72f1.
Patch 2 fixes a DMA channel leak: when spi_register_controller() fails,
the channel acquired via cqspi_request_mmap_dma() is never released.
A dedicated error label is added to release it before the runtime PM
teardown. This fix is one part of upstream commit f18c8cfa4f1a.
Signed-off-by: Diogo Ivo (Schneider Electric) <diogo.ivo@bootlin.com>
---
Diogo Ivo (Schneider Electric) (2):
spi: cadence-quadspi: fix runtime pm cleanup on probe failure/unbind
spi: cadence-quadspi: release DMA channel on probe failure
drivers/spi/spi-cadence-quadspi.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
---
base-commit: 52a355b23cd2dd77b683ed1a1bbe2b7408bd9c74
change-id: 20260730-cqspi-pm_runtime-a8a1c6122944
Best regards,
--
Diogo Ivo <diogo.ivo@bootlin.com>
next reply other threads:[~2026-07-31 10:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-31 10:53 Diogo Ivo (Schneider Electric) [this message]
2026-07-31 10:53 ` [PATCH 1/2] spi: cadence-quadspi: fix runtime pm cleanup on probe failure/unbind Diogo Ivo (Schneider Electric)
2026-07-31 10:53 ` [PATCH 2/2] spi: cadence-quadspi: release DMA channel on probe failure Diogo Ivo (Schneider Electric)
2026-07-31 23:48 ` [PATCH 0/2] spi: cadence-quadspi: fix probe error path and remove Mark Brown
2026-08-01 11:27 ` Diogo Ivo
2026-08-01 15:54 ` Greg Kroah-Hartman
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