Fix error handling with malloc, memalign etc. Introduce xmemalign().

The idea is to panic() when there is no memory available for normal
operation. Exception: code which can consume arbitrary amount of RAM
(example: files allocated in ramfs) must report error instead of panic().

This patch also fixes code which didn't check for NULL from malloc() etc.

Usage: malloc(), memalign() return NULL when out of RAM.
xmalloc(), xmemalign() always return non-NULL or panic().

Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/arm/include/asm/mmu.h b/arch/arm/include/asm/mmu.h
index fdd23b5549..7789cc9b23 100644
--- a/arch/arm/include/asm/mmu.h
+++ b/arch/arm/include/asm/mmu.h
@@ -28,7 +28,7 @@ void *phys_to_virt(unsigned long phys);
 #else
 static inline void *dma_alloc_coherent(size_t size)
 {
-	return malloc(size);
+	return xmalloc(size);
 }
 
 static inline void dma_free_coherent(void *mem)