From f6caea4855553a8b99ba3ec23ecdb5ed8262f26c Mon Sep 17 00:00:00 2001
From: Mathias Nyman <mathias.nyman@linux.intel.com>
Date: Thu, 30 Mar 2023 17:30:56 +0300
Subject: [PATCH] xhci: Free the command allocated for setting LPM if we return early
Git-commit: f6caea4855553a8b99ba3ec23ecdb5ed8262f26c
Patch-mainline: v6.3-rc6
References: git-fixes

The command allocated to set exit latency LPM values need to be freed in
case the command is never queued. This would be the case if there is no
change in exit latency values, or device is missing.

Reported-by: Mirsad Goran Todorovac <mirsad.todorovac@alu.unizg.hr>
Link: https://lore.kernel.org/linux-usb/24263902-c9b3-ce29-237b-1c3d6918f4fe@alu.unizg.hr
Tested-by: Mirsad Goran Todorovac <mirsad.todorovac@alu.unizg.hr>
Fixes: 5c2a380a5aa8 ("xhci: Allocate separate command structures for each LPM command")
Cc: <Stable@vger.kernel.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20230330143056.1390020-4-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/usb/host/xhci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index bdb6dd819a3b..6307bae9cddf 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -4442,6 +4442,7 @@ static int __maybe_unused xhci_change_max_exit_latency(struct xhci_hcd *xhci,
 
 	if (!virt_dev || max_exit_latency == virt_dev->current_mel) {
 		spin_unlock_irqrestore(&xhci->lock, flags);
+		xhci_free_command(xhci, command);
 		return 0;
 	}
 
-- 
2.35.3