From: Fei Shao Date: Wed, 17 Dec 2025 10:10:47 +0000 (+0800) Subject: spi: mt65xx: Use IRQF_ONESHOT with threaded IRQ X-Git-Tag: v6.12.66~12 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1c06d85c3d511172a0fbfeb87e93f44240929cbd;p=thirdparty%2Fkernel%2Fstable.git spi: mt65xx: Use IRQF_ONESHOT with threaded IRQ [ Upstream commit 8c04b77f87e6e321ae6acd28ce1de5553916153f ] This driver is migrated to use threaded IRQ since commit 5972eb05ca32 ("spi: spi-mt65xx: Use threaded interrupt for non-SPIMEM transfer"), and we almost always want to disable the interrupt line to avoid excess interrupts while the threaded handler is processing SPI transfer. Use IRQF_ONESHOT for that purpose. In practice, we see MediaTek devices show SPI transfer timeout errors when communicating with ChromeOS EC in certain scenarios, and with IRQF_ONESHOT, the issue goes away. Signed-off-by: Fei Shao Link: https://patch.msgid.link/20251217101131.1975131-1-fshao@chromium.org Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c index dfee244fc3173..5532ace0b1334 100644 --- a/drivers/spi/spi-mt65xx.c +++ b/drivers/spi/spi-mt65xx.c @@ -1266,7 +1266,7 @@ static int mtk_spi_probe(struct platform_device *pdev) ret = devm_request_threaded_irq(dev, irq, mtk_spi_interrupt, mtk_spi_interrupt_thread, - IRQF_TRIGGER_NONE, dev_name(dev), host); + IRQF_ONESHOT, dev_name(dev), host); if (ret) return dev_err_probe(dev, ret, "failed to register irq\n");