From: Martyn Welch <martyn.welch@gefanuc.com>
Date: Tue, 11 Aug 2009 12:50:49 +0000 (+0100)
Subject: Staging: vme: Add syncronize interrupts before removing callback
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=75155020c8dc3aa38f8cabc95f17ccd8389c37b6;p=linux-beck.git

Staging: vme: Add syncronize interrupts before removing callback

As identified by Jiri, there is no syncronisation before callback is removed.

Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/staging/vme/bridges/vme_tsi148.c b/drivers/staging/vme/bridges/vme_tsi148.c
index cdc291989391..a4929ad3f08a 100644
--- a/drivers/staging/vme/bridges/vme_tsi148.c
+++ b/drivers/staging/vme/bridges/vme_tsi148.c
@@ -480,6 +480,7 @@ int tsi148_request_irq(int level, int statid,
 void tsi148_free_irq(int level, int statid)
 {
 	u32 tmp;
+	struct pci_dev *pdev;
 
 	/* Get semaphore */
 	down(&(vme_irq));
@@ -495,6 +496,10 @@ void tsi148_free_irq(int level, int statid)
 		tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_INTEO);
 		tmp &= ~TSI148_LCSR_INTEO_IRQEO[level - 1];
 		iowrite32be(tmp, tsi148_bridge->base + TSI148_LCSR_INTEO);
+
+		pdev = container_of(tsi148_bridge->parent, struct pci_dev, dev);
+
+		synchronize_irq(pdev->irq);
 	}
 
 	tsi148_bridge->irq[level - 1].callback[statid].func = NULL;