[media] mx2_camera: use GFP_ATOMIC under spin lock

Found using the following semantic patch:
<spml>
@@
@@
spin_lock_irqsave(...);
... when != spin_unlock_irqrestore(...);
* GFP_KERNEL
</spml>

Signed-off-by: Cyril Roelandt <tipecaml@gmail.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/platform/soc_camera/mx2_camera.c b/drivers/media/platform/soc_camera/mx2_camera.c
index 9a55f4c..77529f8 100644 (file)
--- a/drivers/media/platform/soc_camera/mx2_camera.c
+++ b/drivers/media/platform/soc_camera/mx2_camera.c
@@ -879,7 +879,7 @@ static int mx2_start_streaming(struct vb2_queue *q, unsigned int count)
                pcdev->discard_size = icd->user_height * bytesperline;
                pcdev->discard_buffer = dma_alloc_coherent(ici->v4l2_dev.dev,
                                pcdev->discard_size, &pcdev->discard_buffer_dma,
-                               GFP_KERNEL);
+                               GFP_ATOMIC);
                if (!pcdev->discard_buffer) {
                        spin_unlock_irqrestore(&pcdev->lock, flags);
                        return -ENOMEM;