From 9c5ae6915d6f8cf682006e4067de80d22431d92e Mon Sep 17 00:00:00 2001 From: Janusz Dziedzic Date: Fri, 9 Aug 2013 08:39:13 +0200 Subject: [PATCH] ath10k: check allocation errors in CE Handle pci_alloc_consistent(), kmalloc() errors in copy engine module. Found during code review. Signed-off-by: Janusz Dziedzic Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/ce.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/ce.c b/drivers/net/wireless/ath/ath10k/ce.c index 9c9f0814bfcd..8135d5837b36 100644 --- a/drivers/net/wireless/ath/ath10k/ce.c +++ b/drivers/net/wireless/ath/ath10k/ce.c @@ -941,6 +941,12 @@ static int ath10k_ce_init_src_ring(struct ath10k *ar, (nentries * sizeof(struct ce_desc) + CE_DESC_RING_ALIGN), &base_addr); + if (!src_ring->base_addr_owner_space_unaligned) { + kfree(ce_state->src_ring); + ce_state->src_ring = NULL; + return -ENOMEM; + } + src_ring->base_addr_ce_space_unaligned = base_addr; src_ring->base_addr_owner_space = PTR_ALIGN( @@ -957,6 +963,16 @@ static int ath10k_ce_init_src_ring(struct ath10k *ar, src_ring->shadow_base_unaligned = kmalloc((nentries * sizeof(struct ce_desc) + CE_DESC_RING_ALIGN), GFP_KERNEL); + if (!src_ring->shadow_base_unaligned) { + pci_free_consistent(ar_pci->pdev, + (nentries * sizeof(struct ce_desc) + + CE_DESC_RING_ALIGN), + src_ring->base_addr_owner_space, + src_ring->base_addr_ce_space); + kfree(ce_state->src_ring); + ce_state->src_ring = NULL; + return -ENOMEM; + } src_ring->shadow_base = PTR_ALIGN( src_ring->shadow_base_unaligned, @@ -1026,6 +1042,12 @@ static int ath10k_ce_init_dest_ring(struct ath10k *ar, (nentries * sizeof(struct ce_desc) + CE_DESC_RING_ALIGN), &base_addr); + if (!dest_ring->base_addr_owner_space_unaligned) { + kfree(ce_state->dest_ring); + ce_state->dest_ring = NULL; + return -ENOMEM; + } + dest_ring->base_addr_ce_space_unaligned = base_addr; /*