Commit 74098c4a authored by Oliver Neukum's avatar Oliver Neukum Committed by Felipe Balbi

usb: gadget: acm: fix endianness in notifications

The gadget code exports the bitfield for serial status changes
over the wire in its internal endianness. The fix is to convert
to little endian before sending it over the wire.
Signed-off-by: default avatarOliver Neukum <oneukum@suse.com>
Tested-by: default avatar家瑋 <momo1208@gmail.com>
CC: <stable@vger.kernel.org>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent de288e36
...@@ -535,13 +535,15 @@ static int acm_notify_serial_state(struct f_acm *acm) ...@@ -535,13 +535,15 @@ static int acm_notify_serial_state(struct f_acm *acm)
{ {
struct usb_composite_dev *cdev = acm->port.func.config->cdev; struct usb_composite_dev *cdev = acm->port.func.config->cdev;
int status; int status;
__le16 serial_state;
spin_lock(&acm->lock); spin_lock(&acm->lock);
if (acm->notify_req) { if (acm->notify_req) {
dev_dbg(&cdev->gadget->dev, "acm ttyGS%d serial state %04x\n", dev_dbg(&cdev->gadget->dev, "acm ttyGS%d serial state %04x\n",
acm->port_num, acm->serial_state); acm->port_num, acm->serial_state);
serial_state = cpu_to_le16(acm->serial_state);
status = acm_cdc_notify(acm, USB_CDC_NOTIFY_SERIAL_STATE, status = acm_cdc_notify(acm, USB_CDC_NOTIFY_SERIAL_STATE,
0, &acm->serial_state, sizeof(acm->serial_state)); 0, &serial_state, sizeof(acm->serial_state));
} else { } else {
acm->pending = true; acm->pending = true;
status = 0; status = 0;
......
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