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authorOliver Neukum <oliver@neukum.org>2008-01-16 17:18:52 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2008-02-01 14:35:03 -0800
commita1cd7e99b343543af2be4c8c5755e26f6bfd725a (patch)
tree41f8de097dd0889a9c6d02fa0a22b16d5146de46 /include/linux/usb
parent828d55c58cba6b652fd30e00c3d940cb7c523e3c (diff)
USB: stop io performed by mos7720 upon close()
This fixes a problem where the mos7720 driver will make io to a device from which it has been logically disconnected. It does so by introducing a flag by which the generic usb serial code can signal the subdrivers their disconnection and appropriate locking. Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/usb')
-rw-r--r--include/linux/usb/serial.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index ef1e430f7bfa..63b29b5332e6 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -129,6 +129,7 @@ struct usb_serial {
struct usb_device * dev;
struct usb_serial_driver * type;
struct usb_interface * interface;
+ unsigned char disconnected;
unsigned char minor;
unsigned char num_ports;
unsigned char num_port_pointers;
@@ -138,6 +139,7 @@ struct usb_serial {
char num_bulk_out;
struct usb_serial_port * port[MAX_NUM_PORTS];
struct kref kref;
+ struct mutex disc_mutex;
void * private;
};
#define to_usb_serial(d) container_of(d, struct usb_serial, kref)