Merge "msm: ipa: fix race condition around sys->len" (35aa78d2) · Commits · e / devices / android_kernel_xiaomi_markw

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

+2 −0

Original line number	Diff line number	Diff line
		@@ -2966,6 +2966,7 @@ static void ipa3_wq_rx_common(struct ipa3_sys_context *sys, u32 size)
		WARN_ON(1);
		return;
		}
		spin_lock_bh(&sys->spinlock);
		rx_pkt_expected = list_first_entry(&sys->head_desc_list,
		struct ipa3_rx_pkt_wrapper,
		link);
		@@ -2973,6 +2974,7 @@ static void ipa3_wq_rx_common(struct ipa3_sys_context *sys, u32 size)
		sys->len--;
		if (size)
		rx_pkt_expected->len = size;
		spin_unlock_bh(&sys->spinlock);
		rx_skb = rx_pkt_expected->data.skb;
		dma_unmap_single(ipa3_ctx->pdev, rx_pkt_expected->data.dma_addr,
		sys->rx_buff_sz, DMA_FROM_DEVICE);