From: Christophe Lucas <clucas@rotomalug.org>
misc_register() can fail.
Signed-off-by: Christophe Lucas <clucas@rotomalug.org>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
drivers/char/applicom.c | 24 ++++++++++++++++++++----
1 files changed, 20 insertions(+), 4 deletions(-)
diff -puN drivers/char/applicom.c~applicom-fix-error-handling drivers/char/applicom.c
--- devel/drivers/char/applicom.c~applicom-fix-error-handling 2005-07-29 23:26:25.000000000 -0700
+++ devel-akpm/drivers/char/applicom.c 2005-07-29 23:26:25.000000000 -0700
@@ -172,7 +172,7 @@ static int ac_register_board(unsigned lo
void cleanup_module(void)
{
- int i;
+ unsigned int i;
misc_deregister(&ac_miscdev);
@@ -195,7 +195,7 @@ int __init applicom_init(void)
int i, numisa = 0;
struct pci_dev *dev = NULL;
void __iomem *RamIO;
- int boardno;
+ int boardno, ret;
printk(KERN_INFO "Applicom driver: $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $\n");
@@ -294,7 +294,8 @@ int __init applicom_init(void)
}
if (!numisa)
- printk(KERN_WARNING"ac.o: No valid ISA Applicom boards found at mem 0x%lx\n",mem);
+ printk(KERN_WARNING "ac.o: No valid ISA Applicom boards found "
+ "at mem 0x%lx\n", mem);
fin:
init_waitqueue_head(&FlagSleepRec);
@@ -304,7 +305,11 @@ int __init applicom_init(void)
DeviceErrorCount = 0;
if (numboards) {
- misc_register(&ac_miscdev);
+ ret = misc_register(&ac_miscdev);
+ if (ret) {
+ printk(KERN_WARNING "ac.o: Unable to register misc device\n");
+ goto out;
+ }
for (i = 0; i < MAX_BOARD; i++) {
int serial;
char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1];
@@ -337,6 +342,17 @@ int __init applicom_init(void)
else
return -ENXIO;
+
+out:
+ for (i = 0; i < MAX_BOARD; i++) {
+ if (!apbs[i].RamIO)
+ continue;
+ if (apbs[i].irq)
+ free_irq(apbs[i].irq, &dummy);
+ iounmap(apbs[i].RamIO);
+ }
+ pci_disable_device(dev);
+ return ret;
}
_