diff options
| author | David Woodhouse <David.Woodhouse@intel.com> | 2012-11-27 23:49:24 +0000 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-12-02 00:04:51 +0000 |
| commit | 7ad3eadebcb1778c11bbf0fe059d0804173a8123 (patch) | |
| tree | 6dbd35f54b13fd2ccb3076b3fa4e8072712c0f07 | |
| parent | 397ff16dce53888ec693b3718640be2560204751 (diff) | |
| download | linux-7ad3eadebcb1778c11bbf0fe059d0804173a8123.tar.bz2 | |
solos-pci: wait for pending TX to complete when releasing vcc
We should no longer be calling the old pop routine for the vcc, after
vcc_release() has completed. Make sure we wait for any pending TX skbs
to complete, by waiting for our own PKT_PCLOSE control skb to be sent.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| -rw-r--r-- | drivers/atm/solos-pci.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c index 98510931c815..026bdc1dfcc6 100644 --- a/drivers/atm/solos-pci.c +++ b/drivers/atm/solos-pci.c @@ -866,6 +866,7 @@ static int popen(struct atm_vcc *vcc) static void pclose(struct atm_vcc *vcc) { struct solos_card *card = vcc->dev->dev_data; + unsigned char port = SOLOS_CHAN(vcc->dev); struct sk_buff *skb; struct pkt_hdr *header; @@ -881,11 +882,18 @@ static void pclose(struct atm_vcc *vcc) header->vci = cpu_to_le16(vcc->vci); header->type = cpu_to_le16(PKT_PCLOSE); - fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL); + skb_get(skb); + fpga_queue(card, port, skb, NULL); clear_bit(ATM_VF_ADDR, &vcc->flags); clear_bit(ATM_VF_READY, &vcc->flags); + if (!wait_event_timeout(card->param_wq, !skb_shared(skb), 5 * HZ)) + dev_warn(&card->dev->dev, + "Timeout waiting for VCC close on port %d\n", port); + + dev_kfree_skb(skb); + /* Hold up vcc_destroy_socket() (our caller) until solos_bh() in the tasklet has finished processing any incoming packets (and, more to the point, using the vcc pointer). */ @@ -1011,9 +1019,10 @@ static uint32_t fpga_tx(struct solos_card *card) if (vcc) { atomic_inc(&vcc->stats->tx); solos_pop(vcc, oldskb); - } else + } else { dev_kfree_skb_irq(oldskb); - + wake_up(&card->param_wq); + } } } /* For non-DMA TX, write the 'TX start' bit for all four ports simultaneously */ @@ -1345,6 +1354,8 @@ static struct pci_driver fpga_driver = { static int __init solos_pci_init(void) { + BUILD_BUG_ON(sizeof(struct solos_skb_cb) > sizeof(((struct sk_buff *)0)->cb)); + printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION); return pci_register_driver(&fpga_driver); } |