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| author |  Thinh Nguyen <Thinh.Nguyen@synopsys.com>
| 2024-04-16 01:23:07 +0000 |
|---|---|---|
| committer |  Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| 2024-04-18 16:42:21 +0200 |
| commit | f2e0eee4703869dc5edb5302a919861566ca7797 (patch) | |
| tree | ae761728b67962c51ebc1cd83e4d3f2822ed26fe /drivers/usb | |
| parent | Revert "usb: cdc-wdm: close race between read and workqueue" (diff) | |
| download | linux-f2e0eee4703869dc5edb5302a919861566ca7797.tar.gz linux-f2e0eee4703869dc5edb5302a919861566ca7797.tar.bz2 linux-f2e0eee4703869dc5edb5302a919861566ca7797.zip | |
usb: dwc3: ep0: Don't reset resource alloc flag
The DWC3_EP_RESOURCE_ALLOCATED flag ensures that the resource of an
endpoint is only assigned once. Unless the endpoint is reset, don't
clear this flag. Otherwise we may set endpoint resource again, which
prevents the driver from initiate transfer after handling a STALL or
endpoint halt to the control endpoint.
Cc: stable@vger.kernel.org
Fixes: b311048c174d ("usb: dwc3: gadget: Rewrite endpoint allocation flow")
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/00122b7cc5be06abef461776e7cc9f5ebc8bc1cb.1713229786.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/ep0.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 72bb722da2f2..d96ffbe52039 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -226,7 +226,8 @@ void dwc3_ep0_stall_and_restart(struct dwc3 *dwc) /* reinitialize physical ep1 */ dep = dwc->eps[1]; - dep->flags = DWC3_EP_ENABLED; + dep->flags &= DWC3_EP_RESOURCE_ALLOCATED; + dep->flags |= DWC3_EP_ENABLED; /* stall is always issued on EP0 */ dep = dwc->eps[0]; |