path: root/drivers/parport/parport_pc.c
diff options
authorJiri Kosina <jkosina@suse.cz>2011-10-06 14:29:48 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2011-10-18 14:17:40 -0700
commit9fdbdd062bfc187e2aa32f7880fa7e8ae717efdf (patch)
tree473ad879cfb805c26f6f09a7ea5d02c49e15d411 /drivers/parport/parport_pc.c
parent8193c4290620d9b2a6ac116719f11aa99053a90d (diff)
parport_pc: release IO region properly if unsupported ITE887x card is found
sio_ite_8872_probe() bails out if it detects no-parallel (1S, 2S) or unknown card. It doesn't call release_region() on the previously allocated resource though. This causes (a) leak of the resource (b) kernel oops when parport module is removed and /proc/ioports is read. This is because the string that has been associated to the IO port region is a static char array inside the already removed module. Let's call release_region() properly before baling out. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Acked-by: Niels de Vos <ndevos@redhat.com> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Joe Krahn <krahn@niehs.nih.gov> Signed-off-by: Andrew Morton <akpm@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/parport/parport_pc.c')
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/parport/parport_pc.c b/drivers/parport/parport_pc.c
index d1cdb9449f8..d0b597b5039 100644
--- a/drivers/parport/parport_pc.c
+++ b/drivers/parport/parport_pc.c
@@ -2595,14 +2595,17 @@ static int __devinit sio_ite_8872_probe(struct pci_dev *pdev, int autoirq,
case 0x6:
printk(KERN_INFO "parport_pc: ITE8873 found (1S)\n");
+ release_region(inta_addr[i], 32);
return 0;
case 0x8:
printk(KERN_INFO "parport_pc: ITE8874 found (2S)\n");
+ release_region(inta_addr[i], 32);
return 0;
printk(KERN_INFO "parport_pc: unknown ITE887x\n");
printk(KERN_INFO "parport_pc: please mail 'lspci -nvv' "
"output to Rich.Liu@ite.com.tw\n");
+ release_region(inta_addr[i], 32);
return 0;