From 3d27c4de8d4fb2d4099ff324671792aa2578c6f9 Mon Sep 17 00:00:00 2001 From: Xiubo Li Date: Sun, 12 Aug 2018 07:58:23 -0400 Subject: [PATCH] Revert "uio: use request_threaded_irq instead" Since mutex lock in irq hanler is useless currently, here will remove it together with it. This reverts commit 9421e45f5ff3d558cf8b75a8cc0824530caf3453. Reported-by: james.r.harris@intel.com CC: Ahsan Atta Signed-off-by: Xiubo Li Signed-off-by: Greg Kroah-Hartman --- drivers/uio/uio.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c index 5d421d7e8904fc..d7fb49366e7849 100644 --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -443,13 +443,10 @@ static irqreturn_t uio_interrupt(int irq, void *dev_id) struct uio_device *idev = (struct uio_device *)dev_id; irqreturn_t ret; - mutex_lock(&idev->info_lock); - ret = idev->info->handler(irq, idev->info); if (ret == IRQ_HANDLED) uio_event_notify(idev->info); - mutex_unlock(&idev->info_lock); return ret; } @@ -969,9 +966,8 @@ int __uio_register_device(struct module *owner, * FDs at the time of unregister and therefore may not be * freed until they are released. */ - ret = request_threaded_irq(info->irq, NULL, uio_interrupt, - info->irq_flags, info->name, idev); - + ret = request_irq(info->irq, uio_interrupt, + info->irq_flags, info->name, idev); if (ret) goto err_request_irq; }