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Message-Id: <20230818153509.38814-1-18500469033@163.com>
Date: Fri, 18 Aug 2023 23:35:09 +0800
From: Dingyan Li <18500469033@....com>
To: gregkh@...uxfoundation.org, stern@...land.harvard.edu
Cc: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] USB: add new speed value to USB debugfs
Current max speed supported in USB debugfs is 10000.
Since USB 3.2 GEN_2x2 has reached 20000, it's better
to add it. The idea is borrowed from USB sysfs, with
a combination of USB_SPEED_SUPER_PLUS and
USB_SSP_GEN_2x2, the actual speed should be 20000.
Signed-off-by: Dingyan Li <18500469033@....com>
---
drivers/usb/core/devices.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index a247da73f34d..78ebcb657dce 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -429,7 +429,11 @@ static ssize_t usb_device_dump(char __user **buffer, size_t *nbytes,
case USB_SPEED_SUPER:
speed = "5000"; break;
case USB_SPEED_SUPER_PLUS:
- speed = "10000"; break;
+ if (usbdev->ssp_rate == USB_SSP_GEN_2x2)
+ speed = "20000";
+ else
+ speed = "10000";
+ break;
default:
speed = "??";
}
--
2.25.1
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