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authorJean Delvare <khali@linux-fr.org>2006-04-26 23:00:16 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2006-05-09 13:04:21 -0700
commitb33d0798e6cfae1fcee75afc808fe5690a48a814 (patch)
treefee80034c1633f195c1f32493063208abde7d5ca /drivers/i2c
parent6f9c2963888e60e46a9e0bd09a25740abce29262 (diff)
downloadop-kernel-dev-b33d0798e6cfae1fcee75afc808fe5690a48a814.zip
op-kernel-dev-b33d0798e6cfae1fcee75afc808fe5690a48a814.tar.gz
[PATCH] scx200_acb: Fix resource name use after free
We can't pass a string on the stack to request_region. As soon as we leave the function that stack is gone and the string is lost. Let's use the same string we identify the i2c_adapter with instead, it's more simple, more consistent, and just works. This is the second half of fix to bug #6445. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/scx200_acb.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c
index f2dae68..42e4e00 100644
--- a/drivers/i2c/busses/scx200_acb.c
+++ b/drivers/i2c/busses/scx200_acb.c
@@ -415,7 +415,6 @@ static int __init scx200_acb_create(const char *text, int base, int index)
struct scx200_acb_iface *iface;
struct i2c_adapter *adapter;
int rc;
- char description[64];
iface = kzalloc(sizeof(*iface), GFP_KERNEL);
if (!iface) {
@@ -434,10 +433,7 @@ static int __init scx200_acb_create(const char *text, int base, int index)
mutex_init(&iface->mutex);
- snprintf(description, sizeof(description), "%s ACCESS.bus [%s]",
- text, adapter->name);
-
- if (request_region(base, 8, description) == 0) {
+ if (!request_region(base, 8, adapter->name)) {
printk(KERN_ERR NAME ": can't allocate io 0x%x-0x%x\n",
base, base + 8-1);
rc = -EBUSY;
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