flash/nor/core: Fix chunk size calculation in default_flash_mem_blank_check

[openocd.git] / src / flash / nor / core.c

diff --git a/src/flash/nor/core.c b/src/flash/nor/core.c
index 0aaa7d26f0b5e58c9f09a7f12f592dfb745ce24a..c541afcd06cccce6243f0e72438d793fb6385ad6 100644 (file)
--- a/src/flash/nor/core.c
+++ b/src/flash/nor/core.c
@@ -322,8 +322,8 @@ static int default_flash_mem_blank_check(struct flash_bank *bank)
                for (j = 0; j < bank->sectors[i].size; j += buffer_size) {
                        uint32_t chunk;
                        chunk = buffer_size;
-                       if (chunk > (j - bank->sectors[i].size))
-                               chunk = (j - bank->sectors[i].size);
+                       if (chunk > (bank->sectors[i].size - j))
+                               chunk = (bank->sectors[i].size - j);
 
                        retval = target_read_memory(target,
                                        bank->base + bank->sectors[i].offset + j,