From: Seung-Woo Kim <sw0312.kim@samsung.com>
Date: Wed, 19 Apr 2017 01:00:36 +0000 (+0900)
Subject: usb: gadget: slp: fix to use serial number of dmi
X-Git-Tag: submit/tizen/20170703.020614~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=48713455056c3dba3c2f609ce12f7cdc3de15bf9;p=platform%2Fkernel%2Flinux-exynos.git

usb: gadget: slp: fix to use serial number of dmi

For identical serial string of slp gadget, this patch fixes to use
product serial of dmi if the dmi value is set.

Change-Id: Ic75f6c7730cba5860afdf3bd60babc754b3ecd67
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
---

diff --git a/drivers/usb/gadget/legacy/slp.c b/drivers/usb/gadget/legacy/slp.c
index 71246ef48fe8..f61ea943961e 100644
--- a/drivers/usb/gadget/legacy/slp.c
+++ b/drivers/usb/gadget/legacy/slp.c
@@ -23,6 +23,7 @@
 #include <linux/module.h>
 #include <linux/fs.h>
 #include <linux/delay.h>
+#include <linux/dmi.h>
 #include <linux/kernel.h>
 #include <linux/utsname.h>
 #include <linux/platform_device.h>
@@ -1166,6 +1167,7 @@ static int slp_multi_bind(struct usb_composite_dev *cdev)
 {
 	struct slp_multi_dev *dev = _slp_multi_dev;
 	struct usb_gadget	*gadget = cdev->gadget;
+	const char		*serial;
 	int			id, ret;
 
 	/*
@@ -1196,7 +1198,12 @@ static int slp_multi_bind(struct usb_composite_dev *cdev)
 	/* Default strings - should be updated by userspace */
 	strncpy(manufacturer_string, "Samsung", sizeof(manufacturer_string)-1);
 	strncpy(product_string, "TIZEN", sizeof(product_string) - 1);
-	snprintf(serial_string, 18, "%s", "01234TEST");
+
+	serial = dmi_get_system_info(DMI_PRODUCT_SERIAL);
+	if (serial)
+		snprintf(serial_string, 18, "%s", serial);
+	else
+		snprintf(serial_string, 18, "%s", "01234TEST");
 
 	id = usb_string_id(cdev);
 	if (id < 0)