From c42c2b8224c40f91f5f4984cc721d33ab10c7d43 Mon Sep 17 00:00:00 2001 From: Wen Gong Date: Tue, 10 Oct 2023 10:27:21 +0300 Subject: [PATCH] wifi: ath12k: fix invalid m3 buffer address This is to fix m3 buffer reuse issue as m3_mem->size isn't set to zero in the free function, which leads invalid m3 downloading to firmware and firmware crashing. Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4 Signed-off-by: Wen Gong Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20230721055305.20420-4-quic_wgong@quicinc.com --- drivers/net/wireless/ath/ath12k/qmi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/ath/ath12k/qmi.c b/drivers/net/wireless/ath/ath12k/qmi.c index b00d74724aa94..f6e949c618d0a 100644 --- a/drivers/net/wireless/ath/ath12k/qmi.c +++ b/drivers/net/wireless/ath/ath12k/qmi.c @@ -2540,6 +2540,7 @@ static void ath12k_qmi_m3_free(struct ath12k_base *ab) dma_free_coherent(ab->dev, m3_mem->size, m3_mem->vaddr, m3_mem->paddr); m3_mem->vaddr = NULL; + m3_mem->size = 0; } static int ath12k_qmi_wlanfw_m3_info_send(struct ath12k_base *ab) -- 2.30.2