aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/usb/serial/cypress_m8.c
diff options
context:
space:
mode:
authorAlan Stern <stern@rowland.harvard.edu>2009-06-02 11:53:55 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2009-06-16 00:44:47 -0400
commitf9c99bb8b3a1ec81af68d484a551307326c2e933 (patch)
tree9031ebe390ecd558d54ad484dde5ba66dcf823b7 /drivers/usb/serial/cypress_m8.c
parentc706ebdfc8955b850e477255a8c0f93f9f14712d (diff)
USB: usb-serial: replace shutdown with disconnect, release
This patch (as1254) splits up the shutdown method of usb_serial_driver into a disconnect and a release method. The problem is that the usb-serial core was calling shutdown during disconnect handling, but drivers didn't expect it to be called until after all the open file references had been closed. The result was an oops when the close method tried to use memory that had been deallocated by shutdown. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial/cypress_m8.c')
-rw-r--r--drivers/usb/serial/cypress_m8.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index 669f93848539..9734085fd2fe 100644
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -171,7 +171,7 @@ struct cypress_buf {
171static int cypress_earthmate_startup(struct usb_serial *serial); 171static int cypress_earthmate_startup(struct usb_serial *serial);
172static int cypress_hidcom_startup(struct usb_serial *serial); 172static int cypress_hidcom_startup(struct usb_serial *serial);
173static int cypress_ca42v2_startup(struct usb_serial *serial); 173static int cypress_ca42v2_startup(struct usb_serial *serial);
174static void cypress_shutdown(struct usb_serial *serial); 174static void cypress_release(struct usb_serial *serial);
175static int cypress_open(struct tty_struct *tty, 175static int cypress_open(struct tty_struct *tty,
176 struct usb_serial_port *port, struct file *filp); 176 struct usb_serial_port *port, struct file *filp);
177static void cypress_close(struct usb_serial_port *port); 177static void cypress_close(struct usb_serial_port *port);
@@ -215,7 +215,7 @@ static struct usb_serial_driver cypress_earthmate_device = {
215 .id_table = id_table_earthmate, 215 .id_table = id_table_earthmate,
216 .num_ports = 1, 216 .num_ports = 1,
217 .attach = cypress_earthmate_startup, 217 .attach = cypress_earthmate_startup,
218 .shutdown = cypress_shutdown, 218 .release = cypress_release,
219 .open = cypress_open, 219 .open = cypress_open,
220 .close = cypress_close, 220 .close = cypress_close,
221 .dtr_rts = cypress_dtr_rts, 221 .dtr_rts = cypress_dtr_rts,
@@ -242,7 +242,7 @@ static struct usb_serial_driver cypress_hidcom_device = {
242 .id_table = id_table_cyphidcomrs232, 242 .id_table = id_table_cyphidcomrs232,
243 .num_ports = 1, 243 .num_ports = 1,
244 .attach = cypress_hidcom_startup, 244 .attach = cypress_hidcom_startup,
245 .shutdown = cypress_shutdown, 245 .release = cypress_release,
246 .open = cypress_open, 246 .open = cypress_open,
247 .close = cypress_close, 247 .close = cypress_close,
248 .dtr_rts = cypress_dtr_rts, 248 .dtr_rts = cypress_dtr_rts,
@@ -269,7 +269,7 @@ static struct usb_serial_driver cypress_ca42v2_device = {
269 .id_table = id_table_nokiaca42v2, 269 .id_table = id_table_nokiaca42v2,
270 .num_ports = 1, 270 .num_ports = 1,
271 .attach = cypress_ca42v2_startup, 271 .attach = cypress_ca42v2_startup,
272 .shutdown = cypress_shutdown, 272 .release = cypress_release,
273 .open = cypress_open, 273 .open = cypress_open,
274 .close = cypress_close, 274 .close = cypress_close,
275 .dtr_rts = cypress_dtr_rts, 275 .dtr_rts = cypress_dtr_rts,
@@ -616,7 +616,7 @@ static int cypress_ca42v2_startup(struct usb_serial *serial)
616} /* cypress_ca42v2_startup */ 616} /* cypress_ca42v2_startup */
617 617
618 618
619static void cypress_shutdown(struct usb_serial *serial) 619static void cypress_release(struct usb_serial *serial)
620{ 620{
621 struct cypress_private *priv; 621 struct cypress_private *priv;
622 622
@@ -629,7 +629,6 @@ static void cypress_shutdown(struct usb_serial *serial)
629 if (priv) { 629 if (priv) {
630 cypress_buf_free(priv->buf); 630 cypress_buf_free(priv->buf);
631 kfree(priv); 631 kfree(priv);
632 usb_set_serial_port_data(serial->port[0], NULL);
633 } 632 }
634} 633}
635 634