From 10fbc7cf031d7253770331417a4adc4179c979c5 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 8 Feb 2016 21:41:12 +0100 Subject: [PATCH] b43: Remove unnecessary synchronize_irq() before free_irq() Calling synchronize_irq() right before free_irq() is quite useless. On one hand the IRQ can easily fire again before free_irq() is entered, on the other hand free_irq() itself calls synchronize_irq() internally (in a race condition free way), before any state associated with the IRQ is freed. Patch was generated using the following semantic patch: // @@ expression irq; @@ -synchronize_irq(irq); free_irq(irq, ...); // Signed-off-by: Lars-Peter Clausen Signed-off-by: Kalle Valo --- drivers/net/wireless/broadcom/b43/main.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/broadcom/b43/main.c b/drivers/net/wireless/broadcom/b43/main.c index c279211e49f9..72380af9dc52 100644 --- a/drivers/net/wireless/broadcom/b43/main.c +++ b/drivers/net/wireless/broadcom/b43/main.c @@ -4375,12 +4375,10 @@ redo: /* Synchronize and free the interrupt handlers. Unlock to avoid deadlocks. */ orig_dev = dev; mutex_unlock(&wl->mutex); - if (b43_bus_host_is_sdio(dev->dev)) { + if (b43_bus_host_is_sdio(dev->dev)) b43_sdio_free_irq(dev); - } else { - synchronize_irq(dev->dev->irq); + else free_irq(dev->dev->irq, dev); - } mutex_lock(&wl->mutex); dev = wl->current_dev; if (!dev) -- 2.20.1