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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-01-20 14:01:31 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-01-20 14:01:31 -0300
commitb4b7ff4b08e691656c9d77c758fc355833128ac0 (patch)
tree82fcb00e6b918026dc9f2d1f05ed8eee83874cc0 /drivers/scsi/fnic/fnic_fcs.c
parent35acfa0fc609f2a2cd95cef4a6a9c3a5c38f1778 (diff)
Linux-libre 4.4-gnupck-4.4-gnu
Diffstat (limited to 'drivers/scsi/fnic/fnic_fcs.c')
-rw-r--r--drivers/scsi/fnic/fnic_fcs.c46
1 files changed, 38 insertions, 8 deletions
diff --git a/drivers/scsi/fnic/fnic_fcs.c b/drivers/scsi/fnic/fnic_fcs.c
index bf0bbd42e..67669a9e7 100644
--- a/drivers/scsi/fnic/fnic_fcs.c
+++ b/drivers/scsi/fnic/fnic_fcs.c
@@ -939,6 +939,7 @@ int fnic_alloc_rq_frame(struct vnic_rq *rq)
struct sk_buff *skb;
u16 len;
dma_addr_t pa;
+ int r;
len = FC_FRAME_HEADROOM + FC_MAX_FRAME + FC_FRAME_TAILROOM;
skb = dev_alloc_skb(len);
@@ -952,8 +953,19 @@ int fnic_alloc_rq_frame(struct vnic_rq *rq)
skb_reset_network_header(skb);
skb_put(skb, len);
pa = pci_map_single(fnic->pdev, skb->data, len, PCI_DMA_FROMDEVICE);
+
+ r = pci_dma_mapping_error(fnic->pdev, pa);
+ if (r) {
+ printk(KERN_ERR "PCI mapping failed with error %d\n", r);
+ goto free_skb;
+ }
+
fnic_queue_rq_desc(rq, skb, pa, len);
return 0;
+
+free_skb:
+ kfree_skb(skb);
+ return r;
}
void fnic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf)
@@ -981,6 +993,7 @@ void fnic_eth_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
struct ethhdr *eth_hdr;
struct vlan_ethhdr *vlan_hdr;
unsigned long flags;
+ int r;
if (!fnic->vlan_hw_insert) {
eth_hdr = (struct ethhdr *)skb_mac_header(skb);
@@ -1003,18 +1016,27 @@ void fnic_eth_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
pa = pci_map_single(fnic->pdev, skb->data, skb->len, PCI_DMA_TODEVICE);
- spin_lock_irqsave(&fnic->wq_lock[0], flags);
- if (!vnic_wq_desc_avail(wq)) {
- pci_unmap_single(fnic->pdev, pa, skb->len, PCI_DMA_TODEVICE);
- spin_unlock_irqrestore(&fnic->wq_lock[0], flags);
- kfree_skb(skb);
- return;
+ r = pci_dma_mapping_error(fnic->pdev, pa);
+ if (r) {
+ printk(KERN_ERR "PCI mapping failed with error %d\n", r);
+ goto free_skb;
}
+ spin_lock_irqsave(&fnic->wq_lock[0], flags);
+ if (!vnic_wq_desc_avail(wq))
+ goto irq_restore;
+
fnic_queue_wq_eth_desc(wq, skb, pa, skb->len,
0 /* hw inserts cos value */,
fnic->vlan_id, 1);
spin_unlock_irqrestore(&fnic->wq_lock[0], flags);
+ return;
+
+irq_restore:
+ spin_unlock_irqrestore(&fnic->wq_lock[0], flags);
+ pci_unmap_single(fnic->pdev, pa, skb->len, PCI_DMA_TODEVICE);
+free_skb:
+ kfree_skb(skb);
}
/*
@@ -1071,6 +1093,12 @@ static int fnic_send_frame(struct fnic *fnic, struct fc_frame *fp)
pa = pci_map_single(fnic->pdev, eth_hdr, tot_len, PCI_DMA_TODEVICE);
+ ret = pci_dma_mapping_error(fnic->pdev, pa);
+ if (ret) {
+ printk(KERN_ERR "DMA map failed with error %d\n", ret);
+ goto free_skb_on_err;
+ }
+
if ((fnic_fc_trace_set_data(fnic->lport->host->host_no, FNIC_FC_SEND,
(char *)eth_hdr, tot_len)) != 0) {
printk(KERN_ERR "fnic ctlr frame trace error!!!");
@@ -1082,15 +1110,17 @@ static int fnic_send_frame(struct fnic *fnic, struct fc_frame *fp)
pci_unmap_single(fnic->pdev, pa,
tot_len, PCI_DMA_TODEVICE);
ret = -1;
- goto fnic_send_frame_end;
+ goto irq_restore;
}
fnic_queue_wq_desc(wq, skb, pa, tot_len, fr_eof(fp),
0 /* hw inserts cos value */,
fnic->vlan_id, 1, 1, 1);
-fnic_send_frame_end:
+
+irq_restore:
spin_unlock_irqrestore(&fnic->wq_lock[0], flags);
+free_skb_on_err:
if (ret)
dev_kfree_skb_any(fp_skb(fp));