[PATCH] tpm: return chip from tpm_register_hardware

Changes in the 1.2 TPM Specification make it necessary to update some fields
of the chip structure in the initialization function after it is registered
with tpm.c thus tpm_register_hardware was modified to return a pointer to the
structure.  This patch makes that change and the associated changes in
tpm_atmel and tpm_nsc.  The changes to tpm_infineon will be coming in a patch
from Marcel Selhorst.

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>

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index a203963efaab..4f005345bf37 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -48,9 +48,9 @@ extern ssize_t tpm_store_cancel(struct device *, struct device_attribute *attr,
 struct tpm_chip;
 
 struct tpm_vendor_specific {
-        u8 req_complete_mask;
-        u8 req_complete_val;
-        u8 req_canceled;
+        const u8 req_complete_mask;
+        const u8 req_complete_val;
+        const u8 req_canceled;
         void __iomem *iobase;           /* ioremapped address */
         unsigned long base;             /* TPM base address */
 
@@ -100,8 +100,8 @@ static inline void tpm_write_index(int base, int index, int value)
         outb(value & 0xFF, base+1);
 }
 
-extern int tpm_register_hardware(struct device *,
-                                 struct tpm_vendor_specific *);
+extern struct tpm_chip* tpm_register_hardware(struct device *,
+                                 const struct tpm_vendor_specific *);
 extern int tpm_open(struct inode *, struct file *);
 extern int tpm_release(struct inode *, struct file *);
 extern ssize_t tpm_write(struct file *, const char __user *, size_t,