Include linux/slab.h to fix a build error due to kfree() being undefined. Fixes: 3f02cb2fd9d2d ("vfio-ccw: Wire up the CRW irq and CRW region") Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx> --- Encountered this when cross-compiling with a pretty minimal config, didn't bother digging into why the error only showed up in my environment. drivers/s390/cio/vfio_ccw_chp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/s390/cio/vfio_ccw_chp.c b/drivers/s390/cio/vfio_ccw_chp.c index a646fc81c872..13b26a1c7988 100644 --- a/drivers/s390/cio/vfio_ccw_chp.c +++ b/drivers/s390/cio/vfio_ccw_chp.c @@ -8,6 +8,7 @@ * Eric Farman <farman@xxxxxxxxxxxxx> */ +#include <linux/slab.h> #include <linux/vfio.h> #include "vfio_ccw_private.h" -- 2.26.0