[PATCH 1/4] ARM: pbl-multi: Fix SDRAM at end of address space

[Sascha Hauer]

When SDRAM reaches to the end of the address space the comparison
membase + memsize evaluates to 0, so pc - membase < memsize can never
be true. Fix this by substracting membase on both sides of the
comparison.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 arch/arm/cpu/uncompress.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/cpu/uncompress.c b/arch/arm/cpu/uncompress.c
index 5bcce6b..b8e2e9f 100644
--- a/arch/arm/cpu/uncompress.c
+++ b/arch/arm/cpu/uncompress.c
@@ -60,7 +60,7 @@ void __noreturn barebox_multi_pbl_start(unsigned long membase,
 		 * to the current address. Otherwise it may be a readonly location.
 		 * Copy and relocate to the start of the memory in this case.
 		 */
-		if (pc > membase && pc < membase + memsize)
+		if (pc > membase && pc - membase < memsize)
 			relocate_to_current_adr();
 		else
 			relocate_to_adr(membase);
-- 
2.7.0