From 40f9bc646db5aa89fb85f2cda1e55a2bf9d6a30c Mon Sep 17 00:00:00 2001 From: Felix Gu Date: Wed, 4 Mar 2026 20:47:19 +0800 Subject: [PATCH] spi: nxp-xspi: Use reinit_completion() for repeated operations 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: 29c8c00d9f9d ("spi: add driver for NXP XSPI controller") Reviewed-by: Haibo Chen Signed-off-by: Felix Gu Link: https://patch.msgid.link/20260304-spi-nxp-v2-1-cd7d7726a27e@gmail.com Signed-off-by: Mark Brown --- drivers/spi/spi-nxp-xspi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-nxp-xspi.c b/drivers/spi/spi-nxp-xspi.c index 06fcdf22990b8..385302a6e62f2 100644 --- a/drivers/spi/spi-nxp-xspi.c +++ b/drivers/spi/spi-nxp-xspi.c @@ -958,7 +958,7 @@ static int nxp_xspi_do_op(struct nxp_xspi *xspi, const struct spi_mem_op *op) writel(reg, base + XSPI_RBCT); } - init_completion(&xspi->c); + reinit_completion(&xspi->c); /* Config the data address */ writel(op->addr.val + xspi->memmap_phy, base + XSPI_SFP_TG_SFAR); @@ -1273,6 +1273,7 @@ static int nxp_xspi_probe(struct platform_device *pdev) nxp_xspi_default_setup(xspi); + init_completion(&xspi->c); ret = devm_request_irq(dev, irq, nxp_xspi_irq_handler, 0, pdev->name, xspi); if (ret) -- 2.47.3