The data structure which contains the timer is about to be freed. Make
sure no callback is running.

Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Grant Likely <[email protected]>
---
 drivers/block/xsysace.c |    2 ++
 1 file changed, 2 insertions(+)

Index: tip/drivers/block/xsysace.c
===================================================================
--- tip.orig/drivers/block/xsysace.c
+++ tip/drivers/block/xsysace.c
@@ -1088,6 +1088,8 @@ static void ace_teardown(struct ace_devi
        if (ace->irq)
                free_irq(ace->irq, ace);
 
+       del_timer_sync(&ace->stall_timer);
+
        iounmap(ace->baseaddr);
 }
 


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