[PATCH] zram: include err.h in zram_drv

[Sergey Senozhatsky]

zcomp returns error-valued pointer, also include err.h header
in zram_drv.

Per Arnd Bergmann:
The zram driver uses the ERR_PTR macro defined in <linux/err.h>
and relies on this header to be included implicitly through
other headers, which is not (always) the case on the ARM architecture.

Reported-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
---
 drivers/block/zram/zram_drv.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 8b13014..9849b52 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -31,6 +31,7 @@
 #include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/vmalloc.h>
+#include <linux/err.h>
 
 #include "zram_drv.h"
 
-- 
1.9.1.623.gfb8a990

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