mirror of
https://git.planet-casio.com/Lephenixnoir/gint.git
synced 2024-12-28 04:23:36 +01:00
usb: prevent double opening
This could happen in gintctl's USB tracer and obviously cause all sorts of problems.
This commit is contained in:
parent
53c67af52d
commit
c0671649df
2 changed files with 5 additions and 0 deletions
|
@ -39,6 +39,8 @@ enum {
|
|||
USB_OPEN_MISSING_DATA,
|
||||
/* Invalid parameters: bad endpoint numbers, bad buffer sizes... */
|
||||
USB_OPEN_INVALID_PARAMS,
|
||||
/* USB interfaces are already opened */
|
||||
USB_OPEN_ALREADY_OPEN,
|
||||
|
||||
/* This pipe is busy (returned by usb_write_async()) */
|
||||
USB_WRITE_BUSY,
|
||||
|
|
|
@ -121,6 +121,9 @@ static void hpoweroff(void)
|
|||
|
||||
int usb_open(usb_interface_t const **interfaces, gint_call_t callback)
|
||||
{
|
||||
if(usb_open_status)
|
||||
return USB_OPEN_ALREADY_OPEN;
|
||||
|
||||
/* TODO: Check whether the calculator can host devices (probably no) */
|
||||
bool host = false;
|
||||
|
||||
|
|
Loading…
Reference in a new issue