msm: ipa: Add spinlock to avoid deleting already deleted list
There is a chance of deleting, already deleted list
in ipa_cleanup_wlan_rx_common_cache API.
Protect the wlan_comm_desc_list variable,
with the spinlock to avoid this deletion.
Change-Id: Ia05d47d7b54540eff6ef20f86dee410152457caa
Acked-by: Mohammed Javid <mjavid@qti.qualcomm.com>
Signed-off-by: Utkarsh Saxena <usaxena@codeaurora.org>
diff --git a/drivers/platform/msm/ipa/ipa_v2/ipa_dp.c b/drivers/platform/msm/ipa/ipa_v2/ipa_dp.c
index b50596c..964d6c8 100644
--- a/drivers/platform/msm/ipa/ipa_v2/ipa_dp.c
+++ b/drivers/platform/msm/ipa/ipa_v2/ipa_dp.c
@@ -1970,6 +1970,8 @@
struct ipa_rx_pkt_wrapper *rx_pkt;
struct ipa_rx_pkt_wrapper *tmp;
+ spin_lock_bh(&ipa_ctx->wc_memb.wlan_spinlock);
+
list_for_each_entry_safe(rx_pkt, tmp,
&ipa_ctx->wc_memb.wlan_comm_desc_list, link) {
list_del(&rx_pkt->link);
@@ -1990,6 +1992,8 @@
IPAERR("wlan comm buff total cnt: %d\n",
ipa_ctx->wc_memb.wlan_comm_total_cnt);
+ spin_unlock_bh(&ipa_ctx->wc_memb.wlan_spinlock);
+
}
static void ipa_alloc_wlan_rx_common_cache(u32 size)