[TPM] Remove some stale code from the TPM backend driver. The code

used to be used for sending of vTPM control commands, but now this is
all done with the hotplug scripts.

Signed-off-by: Stefan Berger <stefanb@us.ibm.com>

diff --git a/linux-2.6-xen-sparse/drivers/xen/Kconfig b/linux-2.6-xen-sparse/drivers/xen/Kconfig
index 39d316205a1f3b255fa0581afefab54e25f83fcd..b8a94799274894b59b4f188321e78decf57624f9 100644 (file)
--- a/linux-2.6-xen-sparse/drivers/xen/Kconfig
+++ b/linux-2.6-xen-sparse/drivers/xen/Kconfig
@@ -143,15 +143,6 @@ config XEN_TPMDEV_BACKEND
        help
          The TPM-device backend driver
 
-config XEN_TPMDEV_CLOSE_IF_VTPM_FAILS
-       bool "TPM backend closes upon vTPM failure"
-       depends on XEN_TPMDEV_BACKEND
-       default n
-       help
-         The TPM backend closes the channel if the vTPM in userspace indicates
-         a failure. The corresponding domain's channel will be closed.
-         Say Y if you want this feature.
-
 config XEN_BLKDEV_FRONTEND
        tristate "Block-device frontend driver"
        depends on XEN

diff --git a/linux-2.6-xen-sparse/drivers/xen/tpmback/tpmback.c b/linux-2.6-xen-sparse/drivers/xen/tpmback/tpmback.c
index f792a4cf35bd6848e1bc8aeb623998ad4927c2d8..466c3ee581b8d74c002aa7af5f03702a9970c5f2 100644 (file)
--- a/linux-2.6-xen-sparse/drivers/xen/tpmback/tpmback.c
+++ b/linux-2.6-xen-sparse/drivers/xen/tpmback/tpmback.c
@@ -55,7 +55,6 @@ struct packet {
 
 enum {
        PACKET_FLAG_DISCARD_RESPONSE = 1,
-       PACKET_FLAG_CHECK_RESPONSESTATUS = 2,
 };
 
 /* local variables */
@@ -201,21 +200,6 @@ static void packet_free(struct packet *pak)
        kfree(pak);
 }
 
-static int packet_set(struct packet *pak,
-                     const unsigned char *buffer, u32 size)
-{
-       int rc = 0;
-       unsigned char *buf = kmalloc(size, GFP_KERNEL);
-
-       if (buf) {
-               pak->data_buffer = buf;
-               memcpy(buf, buffer, size);
-               pak->data_len = size;
-       } else {
-               rc = -ENOMEM;
-       }
-       return rc;
-}
 
 /*
  * Write data to the shared memory and send it to the FE.
@@ -225,29 +209,6 @@ static int packet_write(struct packet *pak,
 {
        int rc = 0;
 
-       if ((pak->flags & PACKET_FLAG_CHECK_RESPONSESTATUS)) {
-#ifdef CONFIG_XEN_TPMDEV_CLOSE_IF_VTPM_FAILS
-               u32 res;
-
-               if (copy_from_buffer(&res,
-                                    &data[2 + 4], sizeof (res),
-                                    isuserbuffer)) {
-                       return -EFAULT;
-               }
-
-               if (res != 0) {
-                       /*
-                        * Close down this device. Should have the
-                        * FE notified about closure.
-                        */
-                       if (!pak->tpmif) {
-                               return -EFAULT;
-                       }
-                       pak->tpmif->status = DISCONNECTING;
-               }
-#endif
-       }
-
        if (0 != (pak->flags & PACKET_FLAG_DISCARD_RESPONSE)) {
                /* Don't send a respone to this packet. Just acknowledge it. */
                rc = size;