tpm: Store TPM vendor ID

Store the TPM vendor ID for later use.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Kent Yoder <key@linux.vnet.ibm.com>

drivers/char/tpm/tpm.h

@@ -105,6 +105,8 @@ struct tpm_vendor_specific {
 
 	wait_queue_head_t read_queue;
 	wait_queue_head_t int_queue;
+
+	u16 manufacturer_id;
 };
 
 #define TPM_VPRIV(c)	(c)->vendor.priv

drivers/char/tpm/tpm_tis.c

@@ -534,6 +534,7 @@ static int tpm_tis_init(struct device *dev, resource_size_t start,
 	}
 
 	vendor = ioread32(chip->vendor.iobase + TPM_DID_VID(0));
+	chip->vendor.manufacturer_id = vendor;
 
 	dev_info(dev,
 		 "1.2 TPM (device-id 0x%X, rev-id %d)\n",