[PATCH] tpm: fix misc name memory problem
I was using invalid memory for the miscdevice.name. This patch fixes the
problem which was manifested by an ugly entry in /proc/misc.
Signed-off-by: Kylene Hall <kjhall@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index 1156d11..854475c 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -464,6 +464,7 @@
pci_set_drvdata(pci_dev, NULL);
misc_deregister(&chip->vendor->miscdev);
+ kfree(&chip->vendor->miscdev.name);
sysfs_remove_group(&pci_dev->dev.kobj, chip->vendor->attr_group);
@@ -526,7 +527,9 @@
int tpm_register_hardware(struct pci_dev *pci_dev,
struct tpm_vendor_specific *entry)
{
- char devname[7];
+#define DEVNAME_SIZE 7
+
+ char *devname;
struct tpm_chip *chip;
int i, j;
@@ -569,7 +572,8 @@
else
chip->vendor->miscdev.minor = MISC_DYNAMIC_MINOR;
- snprintf(devname, sizeof(devname), "%s%d", "tpm", chip->dev_num);
+ devname = kmalloc(DEVNAME_SIZE, GFP_KERNEL);
+ scnprintf(devname, DEVNAME_SIZE, "%s%d", "tpm", chip->dev_num);
chip->vendor->miscdev.name = devname;
chip->vendor->miscdev.dev = &(pci_dev->dev);