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USB: fix potential qtd use-after-free case in interrupt handler

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wlf 2013-05-22 17:46:51 +08:00
commit 40149bca57
1 changed files with 2 additions and 1 deletions
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drivers/usb/dwc_otg/dwc_otg_hcd_intr.c
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@ -1948,7 +1948,8 @@ int32_t dwc_otg_hcd_handle_hc_n_intr (dwc_otg_hcd_t *_dwc_otg_hcd, uint32_t _num
retval |= handle_hc_nak_intr(_dwc_otg_hcd, hc, hc_regs, qtd);
}
if (hcint.b.ack) {
retval |= handle_hc_ack_intr(_dwc_otg_hcd, hc, hc_regs, qtd);
if(!hcint.b.chhltd)
retval |= handle_hc_ack_intr(_dwc_otg_hcd, hc, hc_regs, qtd);
}
if (hcint.b.nyet) {
retval |= handle_hc_nyet_intr(_dwc_otg_hcd, hc, hc_regs, qtd);