From: Felipe Balbi Date: Fri, 12 Apr 2024 20:26:05 +0000 (+0200) Subject: usb: dwc3: gadget: properly check ep cmd X-Git-Url: http://git.dujemihanovic.xyz/img/static/git-favicon.png?a=commitdiff_plain;h=95b4d655a44626f888bf823a0561a175d456d33a;p=u-boot.git usb: dwc3: gadget: properly check ep cmd Upstream Linux commit 5999914f227b. The cmd argument we pass to dwc3_send_gadget_ep_cmd() could contain extra arguments embedded. When checking for StartTransfer command, we need to make sure to match only lower 4 bits which contain the actual command and ignore the rest. Reported-by: Janusz Dziedzic Signed-off-by: Felipe Balbi [A. Sverdlin: cherry-picked only DWC3_DEPCMD_CMD() define] Signed-off-by: Alexander Sverdlin Reviewed-by: Mattijs Korpershoek Link: https://lore.kernel.org/r/20240412202611.3565052-6-alexander.sverdlin@siemens.com Signed-off-by: Mattijs Korpershoek --- diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 4162a68229..7374ce950d 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -405,6 +405,8 @@ #define DWC3_DEPCMD_SETTRANSFRESOURCE (0x02 << 0) #define DWC3_DEPCMD_SETEPCONFIG (0x01 << 0) +#define DWC3_DEPCMD_CMD(x) ((x) & 0xf) + /* The EP number goes 0..31 so ep0 is always out and ep1 is always in */ #define DWC3_DALEPENA_EP(n) (1 << n)