diff options
author | Andrew Morton <akpm@osdl.org> | 2005-04-24 19:14:36 -0700 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2005-04-24 19:14:36 -0700 |
commit | 758d11bf096ada9d38fc690c2efe5e4661685bfc (patch) | |
tree | 3e6659e01973d3ee028aae15d679aab218c830a9 /drivers | |
parent | d5ac99a648b8c61d0c7f1c32a8ab7f1dca0123d2 (diff) | |
download | linux-758d11bf096ada9d38fc690c2efe5e4661685bfc.tar.bz2 |
[ATM]: ENI155P error handling fix
From: Panagiotis Issaris <takis@lumumba.luc.ac.be>
In the ENI155P device driver in six possible failure cases the requested
irq is not being released.
In three of the above possible failure cases additionally there seems to
be a memory leak.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/atm/eni.c | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/drivers/atm/eni.c b/drivers/atm/eni.c index 78e34ee79df8..10da36934769 100644 --- a/drivers/atm/eni.c +++ b/drivers/atm/eni.c @@ -59,7 +59,6 @@ * - doesn't support OAM cells * - eni_put_free may hang if not putting memory fragments that _complete_ * 2^n block (never happens in real life, though) - * - keeps IRQ even if initialization fails */ @@ -1802,22 +1801,22 @@ static int __devinit eni_start(struct atm_dev *dev) if (request_irq(eni_dev->irq,&eni_int,SA_SHIRQ,DEV_LABEL,dev)) { printk(KERN_ERR DEV_LABEL "(itf %d): IRQ%d is already in use\n", dev->number,eni_dev->irq); - return -EAGAIN; + error = -EAGAIN; + goto out; } - /* @@@ should release IRQ on error */ pci_set_master(eni_dev->pci_dev); if ((error = pci_write_config_word(eni_dev->pci_dev,PCI_COMMAND, PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | (eni_dev->asic ? PCI_COMMAND_PARITY | PCI_COMMAND_SERR : 0)))) { printk(KERN_ERR DEV_LABEL "(itf %d): can't enable memory+" "master (0x%02x)\n",dev->number,error); - return error; + goto free_irq; } if ((error = pci_write_config_byte(eni_dev->pci_dev,PCI_TONGA_CTRL, END_SWAP_DMA))) { printk(KERN_ERR DEV_LABEL "(itf %d): can't set endian swap " "(0x%02x)\n",dev->number,error); - return error; + goto free_irq; } /* determine addresses of internal tables */ eni_dev->vci = eni_dev->ram; @@ -1839,7 +1838,8 @@ static int __devinit eni_start(struct atm_dev *dev) if (!eni_dev->free_list) { printk(KERN_ERR DEV_LABEL "(itf %d): couldn't get free page\n", dev->number); - return -ENOMEM; + error = -ENOMEM; + goto free_irq; } eni_dev->free_len = 0; eni_put_free(eni_dev,buf,buffer_mem); @@ -1855,17 +1855,26 @@ static int __devinit eni_start(struct atm_dev *dev) */ eni_out(0xffffffff,MID_IE); error = start_tx(dev); - if (error) return error; + if (error) goto free_list; error = start_rx(dev); - if (error) return error; + if (error) goto free_list; error = dev->phy->start(dev); - if (error) return error; + if (error) goto free_list; eni_out(eni_in(MID_MC_S) | (1 << MID_INT_SEL_SHIFT) | MID_TX_LOCK_MODE | MID_DMA_ENABLE | MID_TX_ENABLE | MID_RX_ENABLE, MID_MC_S); /* Tonga uses SBus INTReq1 */ (void) eni_in(MID_ISA); /* clear Midway interrupts */ return 0; + +free_list: + kfree(eni_dev->free_list); + +free_irq: + free_irq(eni_dev->irq, eni_dev); + +out: + return error; } |