[PATCH 12/15] mini-os: eliminate tpmfront union member in struct file

[Juergen Gross <jgross@xxxxxxxx>]

Replace the tpmfront specific union member in struct file with the
common dev pointer.

Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
 include/lib.h | 5 -----
 lib/sys.c     | 2 +-
 tpmfront.c    | 8 ++++----
 3 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/include/lib.h b/include/lib.h
index d740065..2ddc076 100644
--- a/include/lib.h
+++ b/include/lib.h
@@ -193,11 +193,6 @@ struct file {
            struct evtchn_port_list ports;
        } evtchn;
        struct gntmap gntmap;
-#ifdef CONFIG_TPMFRONT
-       struct {
-          struct tpmfront_dev *dev;
-       } tpmfront;
-#endif
 #ifdef CONFIG_TPM_TIS
        struct {
           struct tpm_chip *dev;
diff --git a/lib/sys.c b/lib/sys.c
index b35e433..b042bf5 100644
--- a/lib/sys.c
+++ b/lib/sys.c
@@ -462,7 +462,7 @@ int close(int fd)
 #endif
 #ifdef CONFIG_TPMFRONT
        case FTYPE_TPMFRONT:
-            shutdown_tpmfront(files[fd].tpmfront.dev);
+            shutdown_tpmfront(files[fd].dev);
            files[fd].type = FTYPE_NONE;
            return 0;
 #endif
diff --git a/tpmfront.c b/tpmfront.c
index be671c2..0a2fefc 100644
--- a/tpmfront.c
+++ b/tpmfront.c
@@ -538,7 +538,7 @@ int tpmfront_open(struct tpmfront_dev* dev)
 
    dev->fd = alloc_fd(FTYPE_TPMFRONT);
    printk("tpmfront_open(%s) -> %d\n", dev->nodename, dev->fd);
-   files[dev->fd].tpmfront.dev = dev;
+   files[dev->fd].dev = dev;
    dev->respgot = false;
    return dev->fd;
 }
@@ -547,7 +547,7 @@ int tpmfront_posix_write(int fd, const uint8_t* buf, size_t 
count)
 {
    int rc;
    struct tpmfront_dev* dev;
-   dev = files[fd].tpmfront.dev;
+   dev = files[fd].dev;
 
    if(count == 0) {
       return 0;
@@ -573,7 +573,7 @@ int tpmfront_posix_read(int fd, uint8_t* buf, size_t count)
    size_t dummysz;
    struct tpmfront_dev* dev;
 
-   dev = files[fd].tpmfront.dev;
+   dev = files[fd].dev;
 
    if(count == 0) {
       return 0;
@@ -606,7 +606,7 @@ int tpmfront_posix_fstat(int fd, struct stat* buf)
    uint8_t* dummybuf;
    size_t dummysz;
    int rc;
-   struct tpmfront_dev* dev = files[fd].tpmfront.dev;
+   struct tpmfront_dev* dev = files[fd].dev;
 
    /* If we have a response waiting, then read it now from the backend
     * so we can get its length*/
-- 
2.26.2