Handle EBADF when KFD file handle is still open.

Signed-off-by: Sean Keely <Sean.Keely@amd.com>
Change-Id: I23d6c87d5729f57c261030c6baeff4c977eef934

src/libhsakmt.c

@@ -18,7 +18,7 @@ int kmtIoctl(int fd, unsigned long request, void *arg)
 		 * make any subsequent hsaKmt calls fail in CHECK_KFD_OPEN.
 		 */
 		pr_err("KFD file descriptor not valid in this process\n");
-		hsakmt_forked = true;
+		is_forked_child();
 	}
 
 	return ret;

src/libhsakmt.h

@@ -196,4 +196,6 @@ void clear_events_page(void);
 void fmm_clear_all_mem(void);
 void clear_process_doorbells(void);
 uint32_t get_num_sysfs_nodes(void);
+
+bool is_forked_child(void);
 #endif

src/openclose.c

@@ -48,7 +48,7 @@ int zfb_support;
  * because the process can fork without calling the fork function in
  * libc (using clone or calling the system call directly).
  */
-static bool is_forked_child(void)
+bool is_forked_child(void)
 {
 	pid_t cur_pid;