[media] s5p-mfc: Add NULL check for allocated buffer

In certain cases, dma_alloc_coherent returns NULL. Add check for
NULL pointer.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_ctrl.c b/drivers/media/platform/s5p-mfc/s5p_mfc_ctrl.c
index 2e5f30b..dc1fc94 100644 (file)
--- a/drivers/media/platform/s5p-mfc/s5p_mfc_ctrl.c
+++ b/drivers/media/platform/s5p-mfc/s5p_mfc_ctrl.c
@@ -38,7 +38,7 @@ int s5p_mfc_alloc_firmware(struct s5p_mfc_dev *dev)
        dev->fw_virt_addr = dma_alloc_coherent(dev->mem_dev_l, dev->fw_size,
                                        &dev->bank1, GFP_KERNEL);
 
-       if (IS_ERR(dev->fw_virt_addr)) {
+       if (IS_ERR_OR_NULL(dev->fw_virt_addr)) {
                dev->fw_virt_addr = NULL;
                mfc_err("Allocating bitprocessor buffer failed\n");
                return -ENOMEM;