lkml.org 
[lkml]   [2022]   [Aug]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2] usb: host: Initiate urb ep with udev ep0
Date
Currently we look up for endpoint in a table and initate urb endpoint
with it. This is unnecessary because the lookup will always result in
endpoint 0.

Suggested-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Khalid Masum <khalid.masum.92@gmail.com>
---
Changes since v1:
- Remove endpoint lookup and NULL check
- Remove unnecessary variable *ep
- Initiate urb ep with udev ep0
- Update commit message
- v1 Link: https://lore.kernel.org/lkml/20220824130702.10912-1-khalid.masum.92@gmail.com/

drivers/usb/core/hcd.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 94b305bbd621..05f30ae5570b 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -2158,21 +2158,14 @@ static struct urb *request_single_step_set_feature_urb(
{
struct urb *urb;
struct usb_hcd *hcd = bus_to_hcd(udev->bus);
- struct usb_host_endpoint *ep;

urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb)
return NULL;

urb->pipe = usb_rcvctrlpipe(udev, 0);
- ep = (usb_pipein(urb->pipe) ? udev->ep_in : udev->ep_out)
- [usb_pipeendpoint(urb->pipe)];
- if (!ep) {
- usb_free_urb(urb);
- return NULL;
- }

- urb->ep = ep;
+ urb->ep = &udev->ep0;
urb->dev = udev;
urb->setup_packet = (void *)dr;
urb->transfer_buffer = buf;
--
2.37.1
\
 
 \ /
  Last update: 2022-08-24 22:32    [W:0.036 / U:0.112 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site