From 178180aa1c3f8804900476d1c671c2f090c0eea9 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Fri, 22 Apr 2016 13:02:55 +0200 Subject: bsps: Copy FDT only if source != destination --- c/src/lib/libbsp/shared/src/bsp-fdt.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/c/src/lib/libbsp/shared/src/bsp-fdt.c b/c/src/lib/libbsp/shared/src/bsp-fdt.c index 1b149d9aa3..635cb85571 100644 --- a/c/src/lib/libbsp/shared/src/bsp-fdt.c +++ b/c/src/lib/libbsp/shared/src/bsp-fdt.c @@ -42,15 +42,18 @@ void bsp_fdt_copy(const void *src) #else uint32_t *d = &bsp_fdt_blob[0]; #endif - uint32_t m = MIN(sizeof(bsp_fdt_blob), fdt_totalsize(src)); - uint32_t n = (m + sizeof(*d) - 1) / sizeof(*d); - uint32_t i; - for (i = 0; i < n; ++i) { - d[i] = s[i]; - } + if (s != d) { + uint32_t m = MIN(sizeof(bsp_fdt_blob), fdt_totalsize(src)); + uint32_t n = (m + sizeof(*d) - 1) / sizeof(*d); + uint32_t i; + + for (i = 0; i < n; ++i) { + d[i] = s[i]; + } - rtems_cache_flush_multiple_data_lines(d, m); + rtems_cache_flush_multiple_data_lines(d, m); + } } const void *bsp_fdt_get(void) -- cgit v1.2.3