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spi: fsl-qspi: Use reinit_completion() for repeated operations

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The driver currently calls init_completion() during every spi_mem_op.
Tchnically it may work, but it's not the recommended pattern.

According to the kernel documentation: Calling init_completion() on
the same completion object twice is most likely a bug as it
re-initializes the queue to an empty queue and enqueued tasks could
get "lost" - use reinit_completion() in that case, but be aware of
other races.

So moves the initial initialization to probe function and uses
reinit_completion() for subsequent operations.

Fixes: 84d043185d ("spi: Add a driver for the Freescale/NXP QuadSPI controller")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Reviewed-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://patch.msgid.link/20260304-spi-nxp-v2-3-cd7d7726a27e@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Felix Gu 2026-03-04 20:47:21 +08:00 committed by Mark Brown
parent 68c8c93fdb
commit 981b080a79
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GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 1 deletions
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3
drivers/spi/spi-fsl-qspi.c
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@ -633,7 +633,7 @@ static int fsl_qspi_do_op(struct fsl_qspi *q, const struct spi_mem_op *op)
void __iomem *base = q->iobase;
int err = 0;
init_completion(&q->c);
reinit_completion(&q->c);
/*
* Always start the sequence at the same index since we update
@ -965,6 +965,7 @@ static int fsl_qspi_probe(struct platform_device *pdev)
if (ret < 0)
return ret;
init_completion(&q->c);
ret = devm_request_irq(dev, ret,
fsl_qspi_irq_handler, 0, pdev->name, q);
if (ret) {