BackPup/Linux
1
0 Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-10-07 05:31:08 -04:00
Code Issues Packages Projects Releases Wiki Activity

ACM gadget: fix endianness in notifications

Browse Source 
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: Oliver Neukum <[email protected]>
Tested-by: 家瑋 <[email protected]>
CC: [email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Oliver Neukum authored and Greg Kroah-Hartman committed 2017-03-17 13:22:58 +09:00
1 parent 2e47c53503
commit cdd7928df0
1 file changed
+3 -1
Download Patch File Download Diff File Expand all files Collapse all files
drivers/usb/gadget/function/f_acm.c
+3 -1
View File
@@ -535,13 +535,15 @@ static int acm_notify_serial_state(struct f_acm *acm)
{
struct usb_composite_dev *cdev = acm->port.func.config->cdev;
int status;
__le16 serial_state;
spin_lock(&acm->lock);
if (acm->notify_req) {
dev_dbg(&cdev->gadget->dev, "acm ttyGS%d serial state %04x\n",
acm->port_num, acm->serial_state);
serial_state = cpu_to_le16(acm->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 {
acm->pending = true;
status = 0;