[PATCH] usb: gadget: fastboot: detect device if not present

Sascha Hauer s.hauer at pengutronix.de
Mon Sep 17 06:57:10 PDT 2018


When a device file is not present when the fastboot gadget is created
then try to detect it before we fail. It may be that we want to write
to a device that we haven't used before.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 drivers/usb/gadget/f_fastboot.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/usb/gadget/f_fastboot.c b/drivers/usb/gadget/f_fastboot.c
index 40a78987e4..74fb524c1c 100644
--- a/drivers/usb/gadget/f_fastboot.c
+++ b/drivers/usb/gadget/f_fastboot.c
@@ -246,6 +246,11 @@ static int fastboot_add_partition_variables(struct f_fastboot *f_fb,
 	struct fb_variable *var;
 
 	ret = stat(fentry->filename, &s);
+	if (ret) {
+		device_detect_by_name(devpath_to_name(fentry->filename));
+		ret = stat(fentry->filename, &s);
+	}
+
 	if (ret) {
 		if (fentry->flags & FILE_LIST_FLAG_CREATE) {
 			ret = 0;
-- 
2.19.0




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