linux-kernel - [PATCH for-6.14 v3 0/4] Add more devm_ functions to simplify probe path in drivers/spi/atmel-quadspi.c

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Message-ID: <20250207124802.165408-1-csokas.bence@prolan.hu>
Date: Fri, 7 Feb 2025 13:47:55 +0100
From: Bence Csókás <csokas.bence@...lan.hu>
To:
CC: Bence Csókás <csokas.bence@...lan.hu>, Mark Brown
	<broonie@...nel.org>, Vinod Koul <vkoul@...nel.org>, "Rafael J . Wysocki"
	<rafael@...nel.org>, Len Brown <len.brown@...el.com>, Pavel Machek
	<pavel@....cz>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, "Nicolas
 Ferre" <nicolas.ferre@...rochip.com>, Alexandre Belloni
	<alexandre.belloni@...tlin.com>, Claudiu Beznea <claudiu.beznea@...on.dev>,
	Tudor Ambarus <tudor.ambarus@...aro.org>, Varshini Rajendran
	<varshini.rajendran@...rochip.com>, Alexander Dahl <ada@...rsis.com>,
	<linux-spi@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<dmaengine@...r.kernel.org>, <linux-pm@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH for-6.14 v3 0/4] Add more devm_ functions to simplify probe path in drivers/spi/atmel-quadspi.c

The probe function of the atmel-quadspi driver got quite convoluted,
especially since the addition of SAMA7G5 support, that was forward-ported
from an older vendor kernel. To alleivate this - and similar problems in
the future - an effort was made to migrate as many functions as possible,
to their devm_ managed counterparts. The few functions, which did not yet
have a devm_ variant, are added in patch 1 and 2 of this series. Patch 3
and 4 then use these APIs to simplify and fix the probe() function.

Patch 4 in particular, fixes a bug present in 6.14-rc1, where the PM get()
and put() calls were imbalanced.

Links to previous versions:
pre-series:
https://lore.kernel.org/linux-kernel/20241222141427.819222-1-csokas.bence@prolan.hu/
https://lore.kernel.org/linux-kernel/20250114222851.1023194-1-csokas.bence@prolan.hu/
v1:
https://lore.kernel.org/linux-kernel/20250115160244.1102881-1-csokas.bence@prolan.hu/
v2:
https://lore.kernel.org/linux-kernel/20250124085221.766303-8-csokas.bence@prolan.hu/

Bence Csókás (4):
  dma: Add devm_dma_request_chan()
  pm: runtime: Add new devm functions
  spi: atmel-quadspi: Use `devm_dma_request_chan()`
  spi: atmel-quadspi: Fix unbalanced pm_runtime by using devm_ API

 drivers/base/power/runtime.c | 36 +++++++++++++++++++++
 drivers/dma/dmaengine.c      | 30 +++++++++++++++++
 drivers/spi/atmel-quadspi.c  | 62 ++++++++++--------------------------
 include/linux/dmaengine.h    |  7 ++++
 include/linux/pm_runtime.h   |  4 +++
 5 files changed, 93 insertions(+), 46 deletions(-)


base-commit: bb066fe812d6fb3a9d01c073d9f1e2fd5a63403b
-- 
2.48.1