[PATCH usb-next] usb: storage: Fix link error

[Joe Perches]

Fix allmodconfig link error introduced by commit 75b9130e8a
("usb: storage: Add usb_stor_dbg, reduce object size")

Export the symbol usb_stor_dbg.
Add export.h

Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
---
 drivers/usb/storage/debug.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/storage/debug.c b/drivers/usb/storage/debug.c
index b428129..29fe08f 100644
--- a/drivers/usb/storage/debug.c
+++ b/drivers/usb/storage/debug.c
@@ -43,6 +43,7 @@
  */
 
 #include <linux/cdrom.h>
+#include <linux/export.h>
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_dbg.h>
@@ -193,3 +194,4 @@ int usb_stor_dbg(const char *fmt, ...)
 
 	return r;
 }
+EXPORT_SYMBOL_GPL(usb_stor_dbg);


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