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

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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>
This commit is contained in:
Anurag Dutta 2025-12-12 12:53:12 +05:30 committed by Mark Brown
parent b1f54d7143
commit 1889dd2081
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1 changed files with 3 additions and 1 deletions
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4
drivers/spi/spi-cadence-quadspi.c
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@ -2026,7 +2026,9 @@ static int cqspi_probe(struct platform_device *pdev)
probe_reset_failed:
if (cqspi->is_jh7110)
cqspi_jh7110_disable_clk(pdev, cqspi);
clk_disable_unprepare(cqspi->clk);
if (pm_runtime_get_sync(&pdev->dev) >= 0)
clk_disable_unprepare(cqspi->clk);
probe_clk_failed:
return ret;
}