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authorAlan Stern <stern@rowland.harvard.edu>2010-02-17 10:05:47 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2010-03-02 14:55:12 -0800
commit1f87158e44e79e62c8250f278c225ce4ab695f4b (patch)
treeeff328f63a75993a3e1ffbba9c9f0ba1fecf0edb /drivers/usb/serial/pl2303.c
parenta108bfcb372d8c4452701039308fb95747911c59 (diff)
USB: remove references to port->port.count from the serial drivers
This patch (as1344) removes references to port->port.count from the USB serial drivers. Now that serial ports are properly reference counted, port.count checking is unnecessary and incorrect. Drivers should assume that the port is in use from the time the open method runs until the close method is called. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial/pl2303.c')
-rw-r--r--drivers/usb/serial/pl2303.c18
1 files changed, 5 insertions, 13 deletions
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index a3e5a56dc06..571dcf18286 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -1071,10 +1071,6 @@ static void pl2303_read_bulk_callback(struct urb *urb)
if (status) {
dbg("%s - urb status = %d", __func__, status);
- if (!port->port.count) {
- dbg("%s - port is closed, exiting.", __func__);
- return;
- }
if (status == -EPROTO) {
/* PL2303 mysteriously fails with -EPROTO reschedule
* the read */
@@ -1107,15 +1103,11 @@ static void pl2303_read_bulk_callback(struct urb *urb)
}
tty_kref_put(tty);
/* Schedule the next read _if_ we are still open */
- if (port->port.count) {
- urb->dev = port->serial->dev;
- result = usb_submit_urb(urb, GFP_ATOMIC);
- if (result)
- dev_err(&urb->dev->dev, "%s - failed resubmitting"
- " read urb, error %d\n", __func__, result);
- }
-
- return;
+ urb->dev = port->serial->dev;
+ result = usb_submit_urb(urb, GFP_ATOMIC);
+ if (result && result != -EPERM)
+ dev_err(&urb->dev->dev, "%s - failed resubmitting"
+ " read urb, error %d\n", __func__, result);
}
static void pl2303_write_bulk_callback(struct urb *urb)