tpm: Create a tpm_class_ops structure and use it in the drivers

This replaces the static initialization of a tpm_vendor_specific
structure in the drivers with the standard Linux idiom of providing
a const structure of function pointers.

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Joel Schopp <jschopp@linux.vnet.ibm.com>
Reviewed-by: Ashley Lai <adlai@linux.vnet.ibm.com>
[phuewe: did apply manually due to commit
191ffc6bde3 tpm/tpm_i2c_atmel: fix coccinelle warnings]
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>

1 files changed, 8 insertions, 2 deletions

diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 389d483a887c..1b012463da7c 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -1060,7 +1060,7 @@ static void tpm_dev_release(struct device *dev)
  * pci_disable_device
  */
 struct tpm_chip *tpm_register_hardware(struct device *dev,
-					const struct tpm_vendor_specific *entry)
+				       const struct tpm_class_ops *ops)
 {
 	struct tpm_chip *chip;
 
@@ -1073,7 +1073,13 @@ struct tpm_chip *tpm_register_hardware(struct device *dev,
 	mutex_init(&chip->tpm_mutex);
 	INIT_LIST_HEAD(&chip->list);
 
-	memcpy(&chip->vendor, entry, sizeof(struct tpm_vendor_specific));
+	chip->vendor.req_complete_mask = ops->req_complete_mask;
+	chip->vendor.req_complete_val = ops->req_complete_val;
+	chip->vendor.req_canceled = ops->req_canceled;
+	chip->vendor.recv = ops->recv;
+	chip->vendor.send = ops->send;
+	chip->vendor.cancel = ops->cancel;
+	chip->vendor.status = ops->status;
 
 	chip->dev_num = find_first_zero_bit(dev_mask, TPM_NUM_DEVICES);