From 2dfb9a85ecb86f00b085d6fca7d4bb8dc6764710 Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Thu, 28 Apr 2011 09:34:32 -0700 Subject: [PATCH] Input: sh_keysc - switch to threaded IRQ handler Update the KEYSC driver to make use of threaded IRQs with IRQF_ONESHOT to improve interrupt latency. The driver is using udelay() in the ISR to make sure the hardware has stabilized. Without using interrupt threads this delay may affect the latency of the rest of the system. Also pass dev_name() as string for /proc/interrupts. Signed-off-by: Magnus Damm Signed-off-by: Dmitry Torokhov --- drivers/input/keyboard/sh_keysc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/input/keyboard/sh_keysc.c b/drivers/input/keyboard/sh_keysc.c index 429ac2b77438..66eea50fccf5 100644 --- a/drivers/input/keyboard/sh_keysc.c +++ b/drivers/input/keyboard/sh_keysc.c @@ -231,7 +231,8 @@ static int __devinit sh_keysc_probe(struct platform_device *pdev) input->keycodesize = sizeof(pdata->keycodes[0]); input->keycodemax = ARRAY_SIZE(pdata->keycodes); - error = request_irq(irq, sh_keysc_isr, 0, pdev->name, pdev); + error = request_threaded_irq(irq, NULL, sh_keysc_isr, IRQF_ONESHOT, + dev_name(&pdev->dev), pdev); if (error) { dev_err(&pdev->dev, "failed to request IRQ\n"); goto err3; -- GitLab