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usb: dwc3: core: fix memory leaks in event buffer cleanup

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In dwc3_free_one_event_buffer(), only the DMA buffer (evt->buf) was
being freed via dma_free_coherent(), but the evt structure itself was
never explicitly freed, causing a memory leak.

In dwc3_free_event_buffers(), the ev_buffs pointer array allocated
with memalign() was never freed after iterating and releasing all
individual event buffers, causing another memory leak.

Fix both leaks by freeing the evt struct in
dwc3_free_one_event_buffer() and freeing dwc->ev_buffs in
dwc3_free_event_buffers() after all entries have been released.

Signed-off-by: Gurumoorthy Santhakumar <gurumoorthy.santhakumar@oss.qualcomm.com>
Reviewed-by: Marek Vasut <marek.vasut+usb@mailbox.org>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@kernel.org>
This commit is contained in:
Gurumoorthy Santhakumar
2026-04-16 11:25:01 +05:30
committed by Marek Vasut
parent 70fd0c3bb7
commit 884b10e86a
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/dwc3/core.c
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@@ -206,6 +206,7 @@ static void dwc3_free_one_event_buffer(struct dwc3 *dwc,
struct dwc3_event_buffer *evt)
{
dma_free_coherent(evt->buf);
free(evt);
}
/**
@@ -252,6 +253,8 @@ static void dwc3_free_event_buffers(struct dwc3 *dwc)
if (evt)
dwc3_free_one_event_buffer(dwc, evt);
}
free(dwc->ev_buffs);
}
/**