dfu: fix readback buffer overflow test

The buffer is too small if it's < size to read, not if it's <= the size.
This fixes the 1MB test case on Tegra, which has a 1MB buffer.

Signed-off-by: Stephen Warren <swarren@nvidia.com>

diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
index d1cc212a9b4ace1020e88c5c828aa7b3ad421dd2..4368a514d3d956906b19d8fcb38e7e428a2eae85 100644 (file)
--- a/drivers/dfu/dfu.c
+++ b/drivers/dfu/dfu.c
@@ -344,7 +344,7 @@ int dfu_read(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num)
                case DFU_RAM_ADDR:
                        break;
                default:
-                       if (dfu->r_left >= dfu_buf_size) {
+                       if (dfu->r_left > dfu_buf_size) {
                                printf("%s: File too big for buffer\n",
                                       __func__);
                                return -EOVERFLOW;