Merge "msm: ipa: fix resource leak during modem SSR" (d9f768c9) · Commits · e / devices / android_kernel_sony_msm8994

drivers/platform/msm/ipa/ipa_dp.c

+18 −0

Original line number	Diff line number	Diff line
		@@ -1237,6 +1237,8 @@ int ipa_teardown_sys_pipe(u32 clnt_hdl)
		ep->connect.desc.base,
		ep->connect.desc.phys_base);
		sps_free_endpoint(ep->ep_hdl);
		if (ep->sys->repl_wq)
		flush_workqueue(ep->sys->repl_wq);
		if (IPA_CLIENT_IS_CONS(ep->client))
		ipa_cleanup_rx(ep->sys);

		@@ -1793,6 +1795,8 @@ static void ipa_cleanup_rx(struct ipa_sys_context *sys)
		{
		struct ipa_rx_pkt_wrapper *rx_pkt;
		struct ipa_rx_pkt_wrapper *r;
		u32 head;
		u32 tail;

		list_for_each_entry_safe(rx_pkt, r,
		&sys->head_desc_list, link) {
		@@ -1802,6 +1806,20 @@ static void ipa_cleanup_rx(struct ipa_sys_context *sys)
		sys->free_skb(rx_pkt->data.skb);
		kmem_cache_free(ipa_ctx->rx_pkt_wrapper_cache, rx_pkt);
		}

		if (sys->repl.cache) {
		head = atomic_read(&sys->repl.head_idx);
		tail = atomic_read(&sys->repl.tail_idx);
		while (head != tail) {
		rx_pkt = sys->repl.cache[head];
		dma_unmap_single(ipa_ctx->pdev, rx_pkt->data.dma_addr,
		sys->rx_buff_sz, DMA_FROM_DEVICE);
		sys->free_skb(rx_pkt->data.skb);
		kmem_cache_free(ipa_ctx->rx_pkt_wrapper_cache, rx_pkt);
		head = (head + 1) % sys->repl.capacity;
		}
		kfree(sys->repl.cache);
		}
		}