X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=drivers%2Fusb%2Fgadget%2Ff_mass_storage.c;h=21472b26b33a9144e373f46efc982bff80d88478;hp=1a6f415c0d022f34d94e6a609658e47c5a31ed06;hb=6cd0bb515052f9ede3846c0dc6162090a45bb6d6;hpb=b4949b84567f3ae1227d076fc95bbd8efea06506

diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c
index 1a6f415c0d02..21472b26b33a 100644
--- a/drivers/usb/gadget/f_mass_storage.c
+++ b/drivers/usb/gadget/f_mass_storage.c
@@ -512,6 +512,11 @@ static int fsg_set_halt(struct fsg_dev *fsg, struct usb_ep *ep)
 /* Caller must hold fsg->lock */
 static void wakeup_thread(struct fsg_common *common)
 {
+	/*
+	 * Ensure the reading of thread_wakeup_needed
+	 * and the writing of bh->state are completed
+	 */
+	smp_mb();
 	/* Tell the main thread that something has happened */
 	common->thread_wakeup_needed = 1;
 	if (common->thread_task)
@@ -731,6 +736,12 @@ static int sleep_thread(struct fsg_common *common)
 	}
 	__set_current_state(TASK_RUNNING);
 	common->thread_wakeup_needed = 0;
+
+	/*
+	 * Ensure the writing of thread_wakeup_needed
+	 * and the reading of bh->state are completed
+	 */
+	smp_mb();
 	return rc;
 }
 
@@ -2182,7 +2193,7 @@ unknown_cmnd:
 		common->data_size_from_cmnd = 0;
 		sprintf(unknown, "Unknown x%02x", common->cmnd[0]);
 		reply = check_command(common, common->cmnd_size,
-				      DATA_DIR_UNKNOWN, 0xff, 0, unknown);
+				      DATA_DIR_UNKNOWN, ~0, 0, unknown);
 		if (reply == 0) {
 			common->curlun->sense_data = SS_INVALID_COMMAND;
 			reply = -EINVAL;