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authorVardan Mikayelyan <mvardan@synopsys.com>2016-04-27 20:20:51 -0700
committerFelipe Balbi <felipe.balbi@linux.intel.com>2016-04-28 09:41:12 +0300
commitb0d659022e5c96ee5c4bd62d22d3da2d66de306b (patch)
tree78eab31ee45240d425a627de6b81293e6b8492d2 /drivers/usb/dwc2
parentee3de8d750134703c702534173cd8623d1b32c38 (diff)
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usb: dwc2: host: Setting qtd to NULL after freeing it
This is safety change added while doing slub debugging. Affected functions: dwc2_hcd_qtd_unlink_and_free() _dwc2_hcd_urb_enqueue() Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/dwc2')
-rw-r--r--drivers/usb/dwc2/hcd.c1
-rw-r--r--drivers/usb/dwc2/hcd.h1
2 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
index 1f6255131857..2df3d04d26f5 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -4703,6 +4703,7 @@ fail2:
spin_unlock_irqrestore(&hsotg->lock, flags);
urb->hcpriv = NULL;
kfree(qtd);
+ qtd = NULL;
fail1:
if (qh_allocated) {
struct dwc2_qtd *qtd2, *qtd2_tmp;
diff --git a/drivers/usb/dwc2/hcd.h b/drivers/usb/dwc2/hcd.h
index 89fa26cb25f4..7758bfb644ff 100644
--- a/drivers/usb/dwc2/hcd.h
+++ b/drivers/usb/dwc2/hcd.h
@@ -552,6 +552,7 @@ static inline void dwc2_hcd_qtd_unlink_and_free(struct dwc2_hsotg *hsotg,
{
list_del(&qtd->qtd_list_entry);
kfree(qtd);
+ qtd = NULL;
}
/* Descriptor DMA support functions */