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Diffstat (limited to 'drivers/char/tpm/xen-tpmfront.c')
-rw-r--r--drivers/char/tpm/xen-tpmfront.c49
1 files changed, 5 insertions, 44 deletions
diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen-tpmfront.c
index c8ff4df8177..2064b452704 100644
--- a/drivers/char/tpm/xen-tpmfront.c
+++ b/drivers/char/tpm/xen-tpmfront.c
@@ -17,6 +17,7 @@
#include <xen/xenbus.h>
#include <xen/page.h>
#include "tpm.h"
+#include <xen/platform_pci.h>
struct tpm_private {
struct tpm_chip *chip;
@@ -143,46 +144,7 @@ static int vtpm_recv(struct tpm_chip *chip, u8 *buf, size_t count)
return length;
}
-static const struct file_operations vtpm_ops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .open = tpm_open,
- .read = tpm_read,
- .write = tpm_write,
- .release = tpm_release,
-};
-
-static DEVICE_ATTR(pubek, S_IRUGO, tpm_show_pubek, NULL);
-static DEVICE_ATTR(pcrs, S_IRUGO, tpm_show_pcrs, NULL);
-static DEVICE_ATTR(enabled, S_IRUGO, tpm_show_enabled, NULL);
-static DEVICE_ATTR(active, S_IRUGO, tpm_show_active, NULL);
-static DEVICE_ATTR(owned, S_IRUGO, tpm_show_owned, NULL);
-static DEVICE_ATTR(temp_deactivated, S_IRUGO, tpm_show_temp_deactivated,
- NULL);
-static DEVICE_ATTR(caps, S_IRUGO, tpm_show_caps, NULL);
-static DEVICE_ATTR(cancel, S_IWUSR | S_IWGRP, NULL, tpm_store_cancel);
-static DEVICE_ATTR(durations, S_IRUGO, tpm_show_durations, NULL);
-static DEVICE_ATTR(timeouts, S_IRUGO, tpm_show_timeouts, NULL);
-
-static struct attribute *vtpm_attrs[] = {
- &dev_attr_pubek.attr,
- &dev_attr_pcrs.attr,
- &dev_attr_enabled.attr,
- &dev_attr_active.attr,
- &dev_attr_owned.attr,
- &dev_attr_temp_deactivated.attr,
- &dev_attr_caps.attr,
- &dev_attr_cancel.attr,
- &dev_attr_durations.attr,
- &dev_attr_timeouts.attr,
- NULL,
-};
-
-static struct attribute_group vtpm_attr_grp = {
- .attrs = vtpm_attrs,
-};
-
-static const struct tpm_vendor_specific tpm_vtpm = {
+static const struct tpm_class_ops tpm_vtpm = {
.status = vtpm_status,
.recv = vtpm_recv,
.send = vtpm_send,
@@ -190,10 +152,6 @@ static const struct tpm_vendor_specific tpm_vtpm = {
.req_complete_mask = VTPM_STATUS_IDLE | VTPM_STATUS_RESULT,
.req_complete_val = VTPM_STATUS_IDLE | VTPM_STATUS_RESULT,
.req_canceled = vtpm_req_canceled,
- .attr_group = &vtpm_attr_grp,
- .miscdev = {
- .fops = &vtpm_ops,
- },
};
static irqreturn_t tpmif_interrupt(int dummy, void *dev_id)
@@ -421,6 +379,9 @@ static int __init xen_tpmfront_init(void)
if (!xen_domain())
return -ENODEV;
+ if (!xen_has_pv_devices())
+ return -ENODEV;
+
return xenbus_register_frontend(&tpmfront_driver);
}
module_init(xen_tpmfront_init);