implement memmap for mem driver

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 8 insertions, 1 deletions

diff --git a/fs/fs.c b/fs/fs.c
index d0b008aca1..a2a8ed13f3 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -604,7 +604,7 @@ void *memmap(int fd, int flags)
 	struct device_d *dev;
 	struct fs_driver_d *fsdrv;
 	FILE *f = &files[fd];
-	void *ret = NULL;
+	void *ret = (void *)-1;
 
 	dev = f->dev;
 
@@ -962,3 +962,10 @@ ssize_t mem_write(struct device_d *dev, const void *buf, size_t count, ulong off
 }
 EXPORT_SYMBOL(mem_write);
 
+int mem_memmap(struct device_d *dev, void **map, int flags)
+{
+	*map = dev->map_base;
+	return 0;
+}
+EXPORT_SYMBOL(mem_memmap);
+