[PATCH] USB: g_file_storage: export "stall" parameter

This patch changes the g_file_storage driver to make the "stall" module
parameter generally available; currently it is available only if the
testing version of the module has been configured.  It also fixes a typo
in a comment -- thanks, Pat!

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 14 insertions, 13 deletions

diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index 507a24924177..f5ce45c4b2a3 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -81,6 +81,10 @@
  *      removable               Default false, boolean for removable media
  *      luns=N                  Default N = number of filenames, number of
  *                                      LUNs to support
+ *      stall                   Default determined according to the type of
+ *                                      USB device controller (usually true),
+ *                                      boolean to permit the driver to halt
+ *                                      bulk endpoints
  *      transport=XXX           Default BBB, transport name (CB, CBI, or BBB)
  *      protocol=YYY            Default SCSI, protocol name (RBC, 8020 or
  *                                      ATAPI, QIC, UFI, 8070, or SCSI;
@@ -91,14 +95,10 @@
  *      buflen=N                Default N=16384, buffer size used (will be
  *                                      rounded down to a multiple of
  *                                      PAGE_CACHE_SIZE)
- *      stall                   Default determined according to the type of
- *                                      USB device controller (usually true),
- *                                      boolean to permit the driver to halt
- *                                      bulk endpoints
  *
  * If CONFIG_USB_FILE_STORAGE_TEST is not set, only the "file", "ro",
- * "removable", and "luns" options are available; default values are used
- * for everything else.
+ * "removable", "luns", and "stall" options are available; default values
+ * are used for everything else.
  *
  * The pathnames of the backing files and the ro settings are available in
  * the attribute files "file" and "ro" in the lun<n> subdirectory of the
@@ -342,14 +342,15 @@ static struct {
         int             num_ros;
         unsigned int    nluns;
 
+        int             removable;
+        int             can_stall;
+
         char            *transport_parm;
         char            *protocol_parm;
-        int             removable;
         unsigned short  vendor;
         unsigned short  product;
         unsigned short  release;
         unsigned int    buflen;
-        int             can_stall;
 
         int             transport_type;
         char            *transport_name;
@@ -360,11 +361,11 @@ static struct {
         .transport_parm         = "BBB",
         .protocol_parm          = "SCSI",
         .removable              = 0,
+        .can_stall              = 1,
         .vendor                 = DRIVER_VENDOR_ID,
         .product                = DRIVER_PRODUCT_ID,
         .release                = 0xffff,       // Use controller chip type
         .buflen                 = 16384,
-        .can_stall              = 1,
         };
 
 
@@ -380,6 +381,9 @@ MODULE_PARM_DESC(luns, "number of LUNs");
 module_param_named(removable, mod_data.removable, bool, S_IRUGO);
 MODULE_PARM_DESC(removable, "true to simulate removable media");
 
+module_param_named(stall, mod_data.can_stall, bool, S_IRUGO);
+MODULE_PARM_DESC(stall, "false to prevent bulk stalls");
+
 
 /* In the non-TEST version, only the module parameters listed above
  * are available. */
@@ -404,9 +408,6 @@ MODULE_PARM_DESC(release, "USB release number");
 module_param_named(buflen, mod_data.buflen, uint, S_IRUGO);
 MODULE_PARM_DESC(buflen, "I/O buffer size");
 
-module_param_named(stall, mod_data.can_stall, bool, S_IRUGO);
-MODULE_PARM_DESC(stall, "false to prevent bulk stalls");
-
 #endif /* CONFIG_USB_FILE_STORAGE_TEST */
 
 
@@ -2657,7 +2658,7 @@ static int check_command(struct fsg_dev *fsg, int cmnd_size,
                 }
         }
 
-        /* Check that the LUN values are oonsistent */
+        /* Check that the LUN values are consistent */
         if (transport_is_bbb()) {
                 if (fsg->lun != lun)
                         DBG(fsg, "using LUN %d from CBW, "