Re: [PATCH] usb: dwc3: gadget: avoid memory leak when failing to allocate all eps

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Hi Mr. Balbi, :)

On 09/11/2013 05:38 PM, David Cohen wrote:
If dwc3_gadget_init_endpoint() fails after allocate some of the eps, we
need to free their memory to avoid leak.

Signed-off-by: David Cohen <david.a.cohen@xxxxxxxxxxxxxxx>
---
  drivers/usb/dwc3/gadget.c | 13 ++++++++-----
  1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index f168eae..611bdba 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1707,8 +1707,13 @@ static void dwc3_gadget_free_endpoints(struct dwc3 *dwc)
for (epnum = 0; epnum < DWC3_ENDPOINTS_NUM; epnum++) {
  		dep = dwc->eps[epnum];
+		/*
+		 * Because dwc was allocated by kzalloc() and eps are set
+		 * in ascending order, we can assume no extra one was
+		 * allocated after first dep == NULL.
+		 */

Wrong assumption here. Please consider patch v2 instead.

BR, David Cohen

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