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[2/6] xhci: dbc: Fix memory leak in xhci_alloc_dbc()

Message ID 20220921123450.671459-3-mathias.nyman@linux.intel.com
State New
Headers show
Series xhci features and fixes for usb-next | expand

Commit Message

Mathias Nyman Sept. 21, 2022, 12:34 p.m. UTC 
From: Rafael Mendonca <rafaelmendsr@gmail.com>

If DbC is already in use, then the allocated memory for the xhci_dbc struct
doesn't get freed before returning NULL, which leads to a memleak.

Fixes: 534675942e90 ("xhci: dbc: refactor xhci_dbc_init()")
Cc: stable@vger.kernel.org
Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
---
 drivers/usb/host/xhci-dbgcap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/usb/host/xhci-dbgcap.c b/drivers/usb/host/xhci-dbgcap.c
index e61155fa6379..f1367b53b260 100644
--- a/drivers/usb/host/xhci-dbgcap.c
+++ b/drivers/usb/host/xhci-dbgcap.c
@@ -988,7 +988,7 @@  xhci_alloc_dbc(struct device *dev, void __iomem *base, const struct dbc_driver *
 	dbc->driver = driver;
 
 	if (readl(&dbc->regs->control) & DBC_CTRL_DBC_ENABLE)
-		return NULL;
+		goto err;
 
 	INIT_DELAYED_WORK(&dbc->event_work, xhci_dbc_handle_events);
 	spin_lock_init(&dbc->lock);