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. Patch 1 adds the new `devm_dma_request_chan()` function. Patch 2 then uses this APIs to simplify the probe() function. Change in v4: * split PM imbalance fix [1] and DMA cleanup [this series] This series is to be applied after the PM imbalance fix [1]. [1] https://lore.kernel.org/linux-kernel/20250317093445.361821-1-csokas.bence@xxxxxxxxx/ Links to previous versions: pre-series: https://lore.kernel.org/linux-kernel/20241222141427.819222-1-csokas.bence@xxxxxxxxx/ https://lore.kernel.org/linux-kernel/20250114222851.1023194-1-csokas.bence@xxxxxxxxx/ v1: https://lore.kernel.org/linux-kernel/20250115160244.1102881-1-csokas.bence@xxxxxxxxx/ v2: https://lore.kernel.org/linux-kernel/20250124085221.766303-8-csokas.bence@xxxxxxxxx/ v3: https://lore.kernel.org/linux-kernel/20250207124802.165408-1-csokas.bence@xxxxxxxxx/ Bence Csókás (2): dma: Add devm_dma_request_chan() spi: atmel-quadspi: Use `devm_dma_request_chan()` drivers/dma/dmaengine.c | 30 +++++++++++++++++++++++++ drivers/spi/atmel-quadspi.c | 44 ++++++++++--------------------------- include/linux/dmaengine.h | 7 ++++++ 3 files changed, 48 insertions(+), 33 deletions(-) -- 2.48.1
