genirq: Fix null pointer reference in irq_set_affinity_hint()
The recent set_affinity commit by me introduced some null
pointer dereferences on driver unload, because some drivers
call this function with a NULL argument. This fixes the issue
by just checking for null before setting the affinity mask.
Fixes: e2e64a9325
("genirq: Set initial affinity in irq_set_affinity_hint()")
Reported-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
CC: netdev@vger.kernel.org
Link: http://lkml.kernel.org/r/20150128185739.9689.84588.stgit@jbrandeb-cp2.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Родитель
fb7e7deb7f
Коммит
4fe7ffb7e1
|
@ -244,7 +244,8 @@ int irq_set_affinity_hint(unsigned int irq, const struct cpumask *m)
|
|||
desc->affinity_hint = m;
|
||||
irq_put_desc_unlock(desc, flags);
|
||||
/* set the initial affinity to prevent every interrupt being on CPU0 */
|
||||
__irq_set_affinity(irq, m, false);
|
||||
if (m)
|
||||
__irq_set_affinity(irq, m, false);
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(irq_set_affinity_hint);
|
||||
|
|
Загрузка…
Ссылка в новой задаче