linux-kernel - [PATCH] USB: dummy-hcd: Adapt dummy_udc_set

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 2 Nov 2017 11:09:17 +0200
From:   Roger Quadros <rogerq@...com>
To:     <balbi@...nel.org>, <stern@...land.harvard.edu>
CC:     <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Roger Quadros <rogerq@...com>
Subject: [PATCH] USB: dummy-hcd: Adapt dummy_udc_set_speed()

The UDC core ensures that .udc_set_speed() is called with
a speed that is a minimum of the max speeds supported
by the gadget function driver and the UDC driver.

We can now use the speed argument as is.

Get rid of the debug print as that condition will never happen.

Signed-off-by: Roger Quadros <rogerq@...com>
---
 drivers/usb/gadget/udc/dummy_hcd.c | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c
index b17618a..c42ca8e 100644
--- a/drivers/usb/gadget/udc/dummy_hcd.c
+++ b/drivers/usb/gadget/udc/dummy_hcd.c
@@ -910,20 +910,8 @@ static void dummy_udc_set_speed(struct usb_gadget *_gadget,
 	struct dummy	*dum;
 
 	dum = gadget_dev_to_dummy(&_gadget->dev);
-
-	 if (mod_data.is_super_speed)
-		 dum->gadget.speed = min_t(u8, USB_SPEED_SUPER, speed);
-	 else if (mod_data.is_high_speed)
-		 dum->gadget.speed = min_t(u8, USB_SPEED_HIGH, speed);
-	 else
-		 dum->gadget.speed = USB_SPEED_FULL;
-
+	dum->gadget.speed = speed;
 	dummy_udc_update_ep0(dum);
-
-	if (dum->gadget.speed < speed)
-		dev_dbg(udc_dev(dum), "This device can perform faster"
-			" if you connect it to a %s port...\n",
-			usb_speed_string(speed));
 }
 
 static int dummy_udc_start(struct usb_gadget *g,
-- 
cheers,
-roger

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki