[PATCH] extras/mini-os/tpmback.c : fix compilation error.

[Dushyant Behl <myselfdushyantbehl@gmail.com>]

This patch is with respect to the following discussion on xen-devel -
http://lists.xenproject.org/archives/html/xen-devel/2014-07/msg01991.html

The file extras/mini-os/tpmback.c was failing compilation on certain compilers
because of size mismatch between enum and int. Earlier the code used to read
value of enum using %d format, which failed compilation on some compilers.
Now the value is read into an actual int variable and then assigned to the enum.

Signed-off-by:- Dushyant Behl <myselfdushyantbehl@gmail.com>
---
 extras/mini-os/tpmback.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/extras/mini-os/tpmback.c b/extras/mini-os/tpmback.c
index 0601eb3..31da8d5 100644
--- a/extras/mini-os/tpmback.c
+++ b/extras/mini-os/tpmback.c
@@ -332,6 +332,7 @@ error_post_irq:
  * returns 0 on success and non-zero on error */
 int tpmif_change_state(tpmif_t* tpmif, enum xenbus_state state)
 {
+   int tempst;
    char path[512];
    char *value;
    char *err;
@@ -347,11 +348,12 @@ int tpmif_change_state(tpmif_t* tpmif, enum xenbus_state state)
       free(err);
       return -1;
    }
-   if(sscanf(value, "%d", &readst) != 1) {
+   if(sscanf(value, "%d", &tempst) != 1) {
       TPMBACK_ERR("Non integer value (%s) in %s ??\n", value, path);
       free(value);
       return -1;
    }
+   readst = (enum xenbus_state) tempst;
    free(value);
 
    /* It's possible that the backend state got updated by hotplug or something else behind our back */
-- 
1.9.1