linux-kernel - [PATCH v2 18/25] usb: gadget: f_tcm: Cleanup requests on ep disable

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Date:   Mon, 18 Jul 2022 18:27:57 -0700
From:   Thinh Nguyen <Thinh.Nguyen@...opsys.com>
To:     Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Dmitry Bogdanov <d.bogdanov@...ro.com>
Cc:     linux-scsi@...r.kernel.org, target-devel@...r.kernel.org
Subject: [PATCH v2 18/25] usb: gadget: f_tcm: Cleanup requests on ep disable

If the endpoint is disabled, then free the command. Normally we don't
free a command until it's completed its UASP status (failure or not).

Signed-off-by: Thinh Nguyen <Thinh.Nguyen@...opsys.com>
---
 Changes in v2:
 - Use goto cleanup for a cleaner look.

 drivers/usb/gadget/function/f_tcm.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/function/f_tcm.c b/drivers/usb/gadget/function/f_tcm.c
index 8f7eb7045e64..a8a730e5126d 100644
--- a/drivers/usb/gadget/function/f_tcm.c
+++ b/drivers/usb/gadget/function/f_tcm.c
@@ -572,7 +572,7 @@ static void uasp_status_data_cmpl(struct usb_ep *ep, struct usb_request *req)
 	struct f_uas *fu = cmd->fu;
 	int ret;
 
-	if (req->status < 0)
+	if (req->status == -ESHUTDOWN)
 		goto cleanup;
 
 	switch (cmd->state) {
@@ -936,7 +936,10 @@ static void usbg_data_write_cmpl(struct usb_ep *ep, struct usb_request *req)
 
 	cmd->state = UASP_QUEUE_COMMAND;
 
-	if (req->status < 0) {
+	if (req->status == -ESHUTDOWN)
+		goto cleanup;
+
+	if (req->status) {
 		pr_err("%s() state %d transfer failed\n", __func__, cmd->state);
 		goto cleanup;
 	}
-- 
2.28.0