scd: Let the CCID module auto detach the kernel driver.

* scd/ccid-driver.c (ccid_open_usb_reader): Call
libusb_set_auto_detach_kernel_driver.

* scd/scdaemon.c (oCompatibilityFlags): New.
(opts): Add option "compatibility-flags".
(compatibility_flags): New.
(main): Parse flags.
* scd/scdaemon.h (opt): Add field compat_flags.
(COMPAT_CCID_NO_AUTO_DETACH): New.

1 files changed, 19 insertions, 0 deletions

diff --git a/scd/scdaemon.c b/scd/scdaemon.c
index ed7fdc03a..1a8705b18 100644
--- a/scd/scdaemon.c
+++ b/scd/scdaemon.c
@@ -104,6 +104,7 @@ enum cmd_and_opt_values
   oDisableApplication,
   oApplicationPriority,
   oEnablePinpadVarlen,
+  oCompatibilityFlags,
   oListenBacklog
 };
 
@@ -172,6 +173,7 @@ static gpgrt_opt_t opts[] = {
   ARGPARSE_s_s (oDisableApplication, "disable-application", "@"),
   ARGPARSE_s_s (oApplicationPriority, "application-priority",
                 N_("|LIST|change the application priority to LIST")),
+  ARGPARSE_s_s (oCompatibilityFlags, "compatibility-flags", "@"),
   ARGPARSE_s_i (oListenBacklog, "listen-backlog", "@"),
 
 
@@ -204,6 +206,14 @@ static struct debug_flags_s debug_flags [] =
   };
 
 
+/* The list of compatibility flags.  */
+static struct compatibility_flags_s compatibility_flags [] =
+  {
+    { COMPAT_CCID_NO_AUTO_DETACH, "ccid-no-auto-detach" },
+    { 0, NULL }
+  };
+
+
 /* The card driver we use by default for PC/SC.  */
 #if defined(HAVE_W32_SYSTEM) || defined(__CYGWIN__)
 #define DEFAULT_PCSC_DRIVER "winscard.dll"
@@ -632,6 +642,15 @@ main (int argc, char **argv )
 
         case oEnablePinpadVarlen: opt.enable_pinpad_varlen = 1; break;
 
+        case oCompatibilityFlags:
+          if (parse_compatibility_flags (pargs.r.ret_str, &opt.compat_flags,
+                                         compatibility_flags))
+            {
+              pargs.r_opt = ARGPARSE_INVALID_ARG;
+              pargs.err = ARGPARSE_PRINT_WARNING;
+            }
+          break;
+
         case oListenBacklog:
           listen_backlog = pargs.r.ret_int;
           break;