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Commit 7afcfe46 authored by Chaitanya Pratapa's avatar Chaitanya Pratapa Committed by Gerrit - the friendly Code Review server
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msm: ipa3: Fix to recycle buffers 



Make a change to protect cleaning up of recycle buffers
as there can be a race between clean up and recycling.

Change-Id: I7cc4f40ea87fb0a2b9ce76ff24b47c5d8a02d94f
Signed-off-by: default avatarChaitanya Pratapa <cpratapa@codeaurora.org>
parent 8ca6d749

drivers/platform/msm/ipa/ipa_v3/ipa_dp.c

+2 −0
Original line number Diff line number Diff line
@@ -2399,6 +2399,7 @@ static void ipa3_cleanup_rx(struct ipa3_sys_context *sys) 
	 * provided to gsi

	 */



	spin_lock_bh(&sys->spinlock);

	list_for_each_entry_safe(rx_pkt, r,

				 &sys->rcycl_list, link) {

		list_del(&rx_pkt->link);
@@ -2407,6 +2408,7 @@ static void ipa3_cleanup_rx(struct ipa3_sys_context *sys) 
		sys->free_skb(rx_pkt->data.skb);

		kmem_cache_free(ipa3_ctx->rx_pkt_wrapper_cache, rx_pkt);

	}

	spin_unlock_bh(&sys->spinlock);



	if (sys->repl) {

		head = atomic_read(&sys->repl->head_idx);