[PATCH] tpm: add status function to allow non-lpc bus chips

This patch is in preparation of supporting chips that are not necessarily on
the lpc bus and thus are not accessed with inb's and outb's.  The patch
replaces the call to get the chip's status in the tpm.c file with a vendor
specific status function.  The patch also defines the function for each of the
current supported devices.

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, 6 insertions, 0 deletions

diff --git a/drivers/char/tpm/tpm_nsc.c b/drivers/char/tpm/tpm_nsc.c
index b4127348c063..bf3e774c4dce 100644
--- a/drivers/char/tpm/tpm_nsc.c
+++ b/drivers/char/tpm/tpm_nsc.c
@@ -220,6 +220,11 @@ static void tpm_nsc_cancel(struct tpm_chip *chip)
         outb(NSC_COMMAND_CANCEL, chip->vendor->base + NSC_COMMAND);
 }
 
+static u8 tpm_nsc_status(struct tpm_chip *chip)
+{
+        return inb(chip->vendor->base + NSC_STATUS);
+}
+
 static struct file_operations nsc_ops = {
         .owner = THIS_MODULE,
         .llseek = no_llseek,
@@ -248,6 +253,7 @@ static struct tpm_vendor_specific tpm_nsc = {
         .recv = tpm_nsc_recv,
         .send = tpm_nsc_send,
         .cancel = tpm_nsc_cancel,
+        .status = tpm_nsc_status,
         .req_complete_mask = NSC_STATUS_OBF,
         .req_complete_val = NSC_STATUS_OBF,
         .req_canceled = NSC_STATUS_RDY,