We cannot unconditionally access any usb-serial port specific
data from the USB driver. The usb-serial port may already
be gone when the USB device is resumed. This will happen
when the driver is unloaded.
Treat ports with no portdata as closed ports to avoid a NULL
pointer dereference on resume.
Signed-off-by: Bjørn Mork <bjorn@xxxxxxx>
---
drivers/usb/serial/usb_wwan.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
index 7d08113..25d73f4 100644
--- a/drivers/usb/serial/usb_wwan.c
+++ b/drivers/usb/serial/usb_wwan.c
@@ -700,7 +700,7 @@ int usb_wwan_resume(struct usb_serial *serial)
/* skip closed ports */
spin_lock_irq(&intfdata->susp_lock);
- if (!portdata->opened) {
+ if (!portdata || !portdata->opened) {
spin_unlock_irq(&intfdata->susp_lock);
continue;
}
--
1.7.2.5
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