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authorIngo Molnar <mingo@elte.hu>2008-11-20 09:03:38 +0100
committerIngo Molnar <mingo@elte.hu>2008-11-20 09:03:38 +0100
commit90accd6fabf9b2fa2705945a4c601877a75d43bf (patch)
treed393cb54f0228b1313139e4e14adf4f5cf236b59 /drivers/block/ub.c
parentb43d196c4d3fe46d6dda7c987c47792612b80b1b (diff)
parentee2f6cc7f9ea2542ad46070ed62ba7aa04d08871 (diff)
Merge branch 'linus' into x86/memory-corruption-check
Diffstat (limited to 'drivers/block/ub.c')
-rw-r--r--drivers/block/ub.c20
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/block/ub.c b/drivers/block/ub.c
index fccac18d311..048d71d244d 100644
--- a/drivers/block/ub.c
+++ b/drivers/block/ub.c
@@ -1546,8 +1546,6 @@ static void ub_top_sense_done(struct ub_dev *sc, struct ub_scsi_cmd *scmd)
/*
* Reset management
- * XXX Move usb_reset_device to khubd. Hogging kevent is not a good thing.
- * XXX Make usb_sync_reset asynchronous.
*/
static void ub_reset_enter(struct ub_dev *sc, int try)
@@ -1633,6 +1631,22 @@ static void ub_reset_task(struct work_struct *work)
}
/*
+ * XXX Reset brackets are too much hassle to implement, so just stub them
+ * in order to prevent forced unbinding (which deadlocks solid when our
+ * ->disconnect method waits for the reset to complete and this kills keventd).
+ *
+ * XXX Tell Alan to move usb_unlock_device inside of usb_reset_device,
+ * or else the post_reset is invoked, and restats I/O on a locked device.
+ */
+static int ub_pre_reset(struct usb_interface *iface) {
+ return 0;
+}
+
+static int ub_post_reset(struct usb_interface *iface) {
+ return 0;
+}
+
+/*
* This is called from a process context.
*/
static void ub_revalidate(struct ub_dev *sc, struct ub_lun *lun)
@@ -2446,6 +2460,8 @@ static struct usb_driver ub_driver = {
.probe = ub_probe,
.disconnect = ub_disconnect,
.id_table = ub_usb_ids,
+ .pre_reset = ub_pre_reset,
+ .post_reset = ub_post_reset,
};
static int __init ub_init(void)