diff options
Diffstat (limited to 'net/smc/smc_ism.c')
| -rw-r--r-- | net/smc/smc_ism.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/net/smc/smc_ism.c b/net/smc/smc_ism.c index 18946e95a3be..903da947b20d 100644 --- a/net/smc/smc_ism.c +++ b/net/smc/smc_ism.c @@ -146,6 +146,10 @@ out: int smc_ism_unregister_dmb(struct smcd_dev *smcd, struct smc_buf_desc *dmb_desc) { struct smcd_dmb dmb; + int rc = 0; + + if (!dmb_desc->dma_addr) + return rc; memset(&dmb, 0, sizeof(dmb)); dmb.dmb_tok = dmb_desc->token; @@ -153,7 +157,13 @@ int smc_ism_unregister_dmb(struct smcd_dev *smcd, struct smc_buf_desc *dmb_desc) dmb.cpu_addr = dmb_desc->cpu_addr; dmb.dma_addr = dmb_desc->dma_addr; dmb.dmb_len = dmb_desc->len; - return smcd->ops->unregister_dmb(smcd, &dmb); + rc = smcd->ops->unregister_dmb(smcd, &dmb); + if (!rc || rc == ISM_ERROR) { + dmb_desc->cpu_addr = NULL; + dmb_desc->dma_addr = 0; + } + + return rc; } int smc_ism_register_dmb(struct smc_link_group *lgr, int dmb_len, @@ -375,7 +385,7 @@ void smcd_handle_irq(struct smcd_dev *smcd, unsigned int dmbno) spin_lock_irqsave(&smcd->lock, flags); conn = smcd->conn[dmbno]; - if (conn) + if (conn && !conn->killed) tasklet_schedule(&conn->rx_tsklet); spin_unlock_irqrestore(&smcd->lock, flags); } |