patch "USB: dummy-hcd: fix power budget for SuperSpeed mode" added to usb-linus

This is a note to let you know that I've just added the patch titled

USB: dummy-hcd: fix power budget for SuperSpeed mode

to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 2636d49b64671d3d90ecc4daf971b58df3956519 Mon Sep 17 00:00:00 2001
From: "[email protected]" <[email protected]>
Date: Thu, 5 Sep 2019 04:11:57 +0000
Subject: USB: dummy-hcd: fix power budget for SuperSpeed mode

The power budget for SuperSpeed mode should be 900 mA according to USB specification, so set the power budget to 900mA for dummy_start_ss which is only used for SuperSpeed mode.

If the max power consumption of SuperSpeed device is larger than 500 mA, insufficient available bus power error happens in usb_choose_configuration function when the device connects to dummy hcd.

---
 drivers/usb/gadget/udc/dummy_hcd.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

index 8414fac74493..3d499d93c083 100644
@@ -48,6 +48,7 @@
 #define DRIVER_VERSION	"02 May 2005"
 
 #define POWER_BUDGET	500	/* in mA; use 8 for low-power port testing */
+#define POWER_BUDGET_3	900	/* in mA */
 
 static const char	driver_name[] = "dummy_hcd";
 static const char	driver_desc[] = "USB Host+Gadget Emulator";

@@ -2432,7 +2433,7 @@ static int dummy_start_ss(struct dummy_hcd *dum_hcd)
 	dum_hcd->rh_state = DUMMY_RH_RUNNING;
 	dum_hcd->stream_en_ep = 0;
 	INIT_LIST_HEAD(&dum_hcd->urbp_list);
-	dummy_hcd_to_hcd(dum_hcd)->power_budget = POWER_BUDGET;
+	dummy_hcd_to_hcd(dum_hcd)->power_budget = POWER_BUDGET_3;
 	dummy_hcd_to_hcd(dum_hcd)->state = HC_STATE_RUNNING;
 	dummy_hcd_to_hcd(dum_hcd)->uses_new_polling = 1;
 #ifdef CONFIG_USB_OTG

2.23.0