[sane-devel] 'scanimage -L' fails first time with modular SCSI drivers

[Henning Meier-Geinitz]

Hi,

On Fri, Feb 22, 2002 at 02:02:14PM +0000, Tim Waugh wrote:
> Could we add some hook to try to get the modules loaded if
> /proc/scsi/scsi doesn't exist?  Just opening a generic SCSI device is
> enough to load them.

Is anybody against the following patch?

Bye,
  Henning

Index: sanei/sanei_scsi.c
===================================================================
RCS file: /cvsroot/external/sane/sane-backends/sanei/sanei_scsi.c,v
retrieving revision 1.31
diff -u -u -r1.31 sanei_scsi.c
--- sanei_scsi.c	2002/02/09 16:37:21	1.31
+++ sanei_scsi.c	2002/02/24 13:35:40
@@ -2440,11 +2440,13 @@
   #define FOUND_LUN     128
   #define FOUND_ALL     255
 
+  #define FIND_DEVICES_TOUCH_FILE "/dev/sg0"
+
   size_t findvendor_len = 0, findmodel_len = 0, findtype_len = 0;
   char vendor[32], model[32], type[32], revision[32];
   int bus, channel, id, lun;
 
-  int number, i, j, definedd;
+  int number, i, j, definedd, fd;
   char line[256], dev_name[128], *c1, *c2, ctmp;
   const char *string;
   FILE *proc_fp;
@@ -2484,6 +2486,12 @@
   param[7].u.i = &lun;
 
   DBG_INIT ();
+
+  /* Make sure that the kernel SCSI drivers are loaded before reading 
+	 PROCFILE */
+  fd = open (FIND_DEVICES_TOUCH_FILE, O_RDONLY);
+  if (fd >= 0)
+	close (fd);
 
   proc_fp = fopen (PROCFILE, "r");
   if (!proc_fp)