[PATCH 5/6] ARM: <asm/memory.h>: propagate error codes from arm_add_mem_device()

[Ahmad Fatoum]

barebox_add_memory_bank() can fail if the to-be-added memory region
has been requested before. This can happen most easily on i.MX and
STM32MP1 boards:

 - The /memory node in the device tree requests a region
 - The DDR controller driver requests an overlapping region after
   reading back RAM configuration.

This most often leads to error messages down the road, but it can be
difficult to pinpoint the cause. Propagate the error code from
arm_add_mem_device(), so DDR controller drivers can fail their probe
on error.

Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
 arch/arm/include/asm/memory.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index 52114d0c4ef5..2279306179af 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -10,10 +10,10 @@
  */
 #define UL(x) _AC(x, UL)
 
-static inline void arm_add_mem_device(const char* name, resource_size_t start,
-				    resource_size_t size)
+static inline int arm_add_mem_device(const char* name, resource_size_t start,
+				     resource_size_t size)
 {
-	barebox_add_memory_bank(name, start, size);
+	return barebox_add_memory_bank(name, start, size);
 }
 
 #endif	/* __ASM_ARM_MEMORY_H */
-- 
2.29.2