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 <janusz.dziedzic@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

diff --git a/drivers/net/wireless/ath/ath10k/ce.c b/drivers/net/wireless/ath/ath10k/ce.c
index 9c9f0814bfcd53ddc0b639b375cc5eb18cc4d120..8135d5837b36a9408c23e218801e447c18a787d4 100644 (file)
--- 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;
 
        /*