Merge "msm: ipa3: Fix to add check for dma_map_single return values" (852a7cf6) · Commits · e / devices / android_kernel_xiaomi_markw

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

+28 −35

Original line number	Diff line number	Diff line
		@@ -400,7 +400,6 @@ int ipa3_send(struct ipa3_sys_context *sys,
		int i = 0;
		int j;
		int result;
		int fail_dma_wrap = 0;
		u32 mem_flag = GFP_ATOMIC;
		const struct ipa_gsi_ep_config *gsi_ep_cfg;

		@@ -431,7 +430,6 @@ int ipa3_send(struct ipa3_sys_context *sys,
		spin_lock_bh(&sys->spinlock);

		for (i = 0; i < num_desc; i++) {
		fail_dma_wrap = 0;
		tx_pkt = kmem_cache_zalloc(ipa3_ctx->tx_pkt_wrapper_cache,
		mem_flag);
		if (!tx_pkt) {
		@@ -454,7 +452,7 @@ int ipa3_send(struct ipa3_sys_context *sys,
		if (ipa_populate_tag_field(&desc[i], tx_pkt,
		&tag_pyld_ret)) {
		IPAERR("Failed to populate tag field\n");
		goto failure;
		goto failure_dma_map;
		}
		}

		@@ -470,11 +468,6 @@ int ipa3_send(struct ipa3_sys_context *sys,
		tx_pkt->mem.base,
		tx_pkt->mem.size,
		DMA_TO_DEVICE);
		if (!tx_pkt->mem.phys_base) {
		IPAERR("failed to do dma map.\n");
		fail_dma_wrap = 1;
		goto failure;
		}
		} else {
		tx_pkt->mem.phys_base =
		desc[i].dma_address;
		@@ -490,17 +483,17 @@ int ipa3_send(struct ipa3_sys_context *sys,
		desc[i].frag,
		0, tx_pkt->mem.size,
		DMA_TO_DEVICE);
		if (!tx_pkt->mem.phys_base) {
		IPAERR("dma map failed\n");
		fail_dma_wrap = 1;
		goto failure;
		}
		} else {
		tx_pkt->mem.phys_base =
		desc[i].dma_address;
		tx_pkt->no_unmap_dma = true;
		}
		}
		if (dma_mapping_error(ipa3_ctx->pdev, tx_pkt->mem.phys_base)) {
		IPAERR("failed to do dma map.\n");
		goto failure_dma_map;
		}

		tx_pkt->sys = sys;
		tx_pkt->callback = desc[i].callback;
		tx_pkt->user1 = desc[i].user1;
		@@ -561,28 +554,31 @@ int ipa3_send(struct ipa3_sys_context *sys,

		return 0;

		failure_dma_map:
		kmem_cache_free(ipa3_ctx->tx_pkt_wrapper_cache, tx_pkt);

		failure:
		ipahal_destroy_imm_cmd(tag_pyld_ret);
		tx_pkt = tx_pkt_first;
		for (j = 0; j < i; j++) {
		next_pkt = list_next_entry(tx_pkt, link);
		list_del(&tx_pkt->link);

		if (!tx_pkt->no_unmap_dma) {
		if (desc[j].type != IPA_DATA_DESC_SKB_PAGED) {
		dma_unmap_single(ipa3_ctx->pdev, tx_pkt->mem.phys_base,
		tx_pkt->mem.size,
		DMA_TO_DEVICE);
		dma_unmap_single(ipa3_ctx->pdev,
		tx_pkt->mem.phys_base,
		tx_pkt->mem.size, DMA_TO_DEVICE);
		} else {
		dma_unmap_page(ipa3_ctx->pdev, tx_pkt->mem.phys_base,
		dma_unmap_page(ipa3_ctx->pdev,
		tx_pkt->mem.phys_base,
		tx_pkt->mem.size,
		DMA_TO_DEVICE);
		}
		}
		kmem_cache_free(ipa3_ctx->tx_pkt_wrapper_cache, tx_pkt);
		tx_pkt = next_pkt;
		}
		if (j < num_desc)
		/* last desc failed */
		if (fail_dma_wrap)
		kmem_cache_free(ipa3_ctx->tx_pkt_wrapper_cache, tx_pkt);

		kfree(gsi_xfer_elem_array);
		spin_unlock_bh(&sys->spinlock);
		@@ -1825,8 +1821,7 @@ begin:
		rx_pkt->data.dma_addr = dma_map_single(ipa3_ctx->pdev, ptr,
		sys->rx_buff_sz,
		DMA_FROM_DEVICE);
		if (rx_pkt->data.dma_addr == 0 \|\|
		rx_pkt->data.dma_addr == ~0) {
		if (dma_mapping_error(ipa3_ctx->pdev, rx_pkt->data.dma_addr)) {
		pr_err_ratelimited("%s dma map fail %p for %p sys=%p\n",
		__func__, (void *)rx_pkt->data.dma_addr,
		ptr, sys);
		@@ -1993,8 +1988,7 @@ static void ipa3_alloc_wlan_rx_common_cache(u32 size)
		ptr = skb_put(rx_pkt->data.skb, IPA_WLAN_RX_BUFF_SZ);
		rx_pkt->data.dma_addr = dma_map_single(ipa3_ctx->pdev, ptr,
		IPA_WLAN_RX_BUFF_SZ, DMA_FROM_DEVICE);
		if (rx_pkt->data.dma_addr == 0 \|\|
		rx_pkt->data.dma_addr == ~0) {
		if (dma_mapping_error(ipa3_ctx->pdev, rx_pkt->data.dma_addr)) {
		IPAERR("dma_map_single failure %p for %p\n",
		(void *)rx_pkt->data.dma_addr, ptr);
		goto fail_dma_mapping;
		@@ -2065,8 +2059,7 @@ static void ipa3_replenish_rx_cache(struct ipa3_sys_context *sys)
		rx_pkt->data.dma_addr = dma_map_single(ipa3_ctx->pdev, ptr,
		sys->rx_buff_sz,
		DMA_FROM_DEVICE);
		if (rx_pkt->data.dma_addr == 0 \|\|
		rx_pkt->data.dma_addr == ~0) {
		if (dma_mapping_error(ipa3_ctx->pdev, rx_pkt->data.dma_addr)) {
		IPAERR("dma_map_single failure %p for %p\n",
		(void *)rx_pkt->data.dma_addr, ptr);
		goto fail_dma_mapping;
		@@ -2165,8 +2158,8 @@ static void ipa3_replenish_rx_cache_recycle(struct ipa3_sys_context *sys)
		ptr = skb_put(rx_pkt->data.skb, sys->rx_buff_sz);
		rx_pkt->data.dma_addr = dma_map_single(ipa3_ctx->pdev,
		ptr, sys->rx_buff_sz, DMA_FROM_DEVICE);
		if (rx_pkt->data.dma_addr == 0 \|\|
		rx_pkt->data.dma_addr == ~0) {
		if (dma_mapping_error(ipa3_ctx->pdev,
		rx_pkt->data.dma_addr)) {
		IPAERR("dma_map_single failure %p for %p\n",
		(void *)rx_pkt->data.dma_addr, ptr);
		goto fail_dma_mapping;
		@@ -2181,8 +2174,8 @@ static void ipa3_replenish_rx_cache_recycle(struct ipa3_sys_context *sys)
		ptr = skb_put(rx_pkt->data.skb, sys->rx_buff_sz);
		rx_pkt->data.dma_addr = dma_map_single(ipa3_ctx->pdev,
		ptr, sys->rx_buff_sz, DMA_FROM_DEVICE);
		if (rx_pkt->data.dma_addr == 0 \|\|
		rx_pkt->data.dma_addr == ~0) {
		if (dma_mapping_error(ipa3_ctx->pdev,
		rx_pkt->data.dma_addr)) {
		IPAERR("dma_map_single failure %p for %p\n",
		(void *)rx_pkt->data.dma_addr, ptr);
		goto fail_dma_mapping;

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

+7 −0

Original line number	Diff line number	Diff line
		@@ -491,6 +491,10 @@ static int __ipa_add_hdr(struct ipa_hdr_add *hdr)
		entry->hdr,
		entry->hdr_len,
		DMA_TO_DEVICE);
		if (dma_mapping_error(ipa3_ctx->pdev, entry->phys_base)) {
		IPAERR("dma_map_single failure for entry\n");
		goto fail_dma_mapping;
		}
		} else {
		entry->is_hdr_proc_ctx = false;
		if (list_empty(&htbl->head_free_offset_list[bin])) {
		@@ -566,6 +570,9 @@ fail_add_proc_ctx:
		list_del(&entry->link);
		dma_unmap_single(ipa3_ctx->pdev, entry->phys_base,
		entry->hdr_len, DMA_TO_DEVICE);
		fail_dma_mapping:
		entry->is_hdr_proc_ctx = false;

		bad_hdr_len:
		entry->cookie = 0;
		kmem_cache_free(ipa3_ctx->hdr_cache, entry);