tree 83b425282fb306a2b96520431867430233955385
parent 8835f6657316162a8937d3f26ccd8f5886ba3845
author Flavio Leitner <[EMAIL PROTECTED]> Tue, 19 Apr 2005 07:39:31 -0700
committer Greg K-H <[EMAIL PROTECTED]> Tue, 19 Apr 2005 07:39:31 -0700
[PATCH] pl2303 - unplug device.
It's possible to unplug usb device and do tiocmset() and tiocmget() without
valid interface in pl2303 module.
The patch below check this and return -ENODEV if interface was removed.
From: Flavio Leitner <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
diff -purN linux-05-04-11/drivers/usb/serial/pl2303.c
linux-05-04-11.usb/drivers/usb/serial/pl2303.c
usb/serial/pl2303.c | 6 ++++++
1 files changed, 6 insertions(+)
Index: drivers/usb/serial/pl2303.c
===================================================================
--- 7f6f1860d05a4d6afa4284c385ecb0a402b32f48/drivers/usb/serial/pl2303.c
(mode:100644 sha1:3368d2b0412d2ef74cdc4b9784b4f877f741522d)
+++ 83b425282fb306a2b96520431867430233955385/drivers/usb/serial/pl2303.c
(mode:100644 sha1:a52115407ea13f15724cceb0e4a4ddf4727bf5ae)
@@ -677,6 +677,9 @@
unsigned long flags;
u8 control;
+ if (!usb_get_intfdata(port->serial->interface))
+ return -ENODEV;
+
spin_lock_irqsave (&priv->lock, flags);
if (set & TIOCM_RTS)
priv->line_control |= CONTROL_RTS;
@@ -702,6 +705,9 @@
dbg("%s (%d)", __FUNCTION__, port->number);
+ if (!usb_get_intfdata(port->serial->interface))
+ return -ENODEV;
+
spin_lock_irqsave (&priv->lock, flags);
mcr = priv->line_control;
status = priv->line_status;
-
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