Hi,
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.
The patch applies to 2.6.11-rc5-bk2.
diff -uprN linux-2.6.11-rc5-bk2/drivers/atm/eni.c
linux-2.6.11-rc5-bk2-pi/drivers/atm/eni.c
--- linux-2.6.11-rc5-bk2/drivers/atm/eni.c 2005-02-28 13:31:21.000000000
+0100
+++ linux-2.6.11-rc5-bk2-pi/drivers/atm/eni.c 2005-02-28 14:16:13.000000000
+0100
@@ -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 at
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 at
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 at
*/
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;
}
With friendly regards,
Takis
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