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[v4,2/4] ath11k: fix invalid m3 buffer address

Message ID 20211116041522.23529-3-quic_wgong@quicinc.com (mailing list archive)
State Changes Requested
Delegated to: Kalle Valo
Headers show
Series ath11k: add feature for device recovery | expand

Commit Message

Wen Gong Nov. 16, 2021, 4:15 a.m. UTC 
From: Carl Huang <quic_cjhuang@quicinc.com>

This is to fix m3 buffer reuse issue as m3_mem->size isn't set to
ZERO in free function, which leads invalid m3 downloading to
firmware and firmware crashed.

Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1

Signed-off-by: Carl Huang <quic_cjhuang@quicinc.com>
Signed-off-by: Wen Gong <quic_wgong@quicinc.com>
---
 drivers/net/wireless/ath/ath11k/qmi.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/drivers/net/wireless/ath/ath11k/qmi.c b/drivers/net/wireless/ath/ath11k/qmi.c
index 1f474a10d1b0..2efc07f175c9 100644
--- a/drivers/net/wireless/ath/ath11k/qmi.c
+++ b/drivers/net/wireless/ath/ath11k/qmi.c
@@ -2184,6 +2184,7 @@  static void ath11k_qmi_m3_free(struct ath11k_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 ath11k_qmi_wlanfw_m3_info_send(struct ath11k_base *ab)