spi: cadence-quadspi: Fix clock disable on probe failure path

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[ Upstream commit 1889dd2081 ]

When cqspi_request_mmap_dma() returns -EPROBE_DEFER after runtime PM
is enabled, the error path calls clk_disable_unprepare() on an already
disabled clock, causing an imbalance.

Use pm_runtime_get_sync() to increment the usage counter and resume the
device. This prevents runtime_suspend() from being invoked and causing
a double clock disable.

Fixes: 1406234105 ("mtd: spi-nor: Add driver for Cadence Quad SPI Flash Controller")
Signed-off-by: Anurag Dutta <a-dutta@ti.com>
Tested-by: Nishanth Menon <nm@ti.com>
Link: https://patch.msgid.link/20251212072312.2711806-3-a-dutta@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Anurag Dutta 2025-12-12 12:53:12 +05:30 • committed by Greg Kroah-Hartman

parent 0849560e52

commit 2ae324db9f

1 changed files with 3 additions and 1 deletions

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drivers/spi/spi-cadence-quadspi.c

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