Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> writes:
> I'm not going to swear here. The Android gadget includes composite.c
> from the main tree and overwrites functions. This would still work if I
> rename it and remove the const attribute but the problem rises again
> once we stop including composite.c and use it as a library function.
>
> Cc: devel@xxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
> ---
> v1..v2: different overwrite hack
>
> Guys, it is getting difficult to keep up fixing Android code while
> hacking on composite. Is anyone against a copy of composite.c and
> friends in drivers/staging/ccg/ like it has been with transport.c or
> scsiglue.c for drivers/staging/keucr?
>
> drivers/staging/ccg/ccg.c | 9 +++++----
> drivers/usb/gadget/composite.c | 11 ++++++++++-
> 2 files changed, 15 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/staging/ccg/ccg.c b/drivers/staging/ccg/ccg.c
> index 8fb8663..78ccfe9 100644
> --- a/drivers/staging/ccg/ccg.c
> +++ b/drivers/staging/ccg/ccg.c
> @@ -47,6 +47,11 @@
> #include "../../usb/gadget/usbstring.c"
> #include "../../usb/gadget/config.c"
> #include "../../usb/gadget/epautoconf.c"
> +
> +#define USB_COMPOSITE_INCLUDED_BY_CCG 1
> +static int ccg_setup(struct usb_gadget *gadget,
> + const struct usb_ctrlrequest *c);
> +static void ccg_disconnect(struct usb_gadget *gadget);
> #include "../../usb/gadget/composite.c"
>
> #include "../../usb/gadget/f_mass_storage.c"
> @@ -1272,10 +1277,6 @@ static int __init init(void)
>
> _ccg_dev = dev;
>
> - /* Override composite driver functions */
> - composite_driver.setup = ccg_setup;
> - composite_driver.disconnect = ccg_disconnect;
> -
> err = usb_composite_probe(&ccg_usb_driver);
> if (err) {
> class_destroy(ccg_class);
> diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
> index 598df69..790fc4d 100644
> --- a/drivers/usb/gadget/composite.c
> +++ b/drivers/usb/gadget/composite.c
> @@ -1598,9 +1598,18 @@ static const struct usb_gadget_driver composite_driver_template = {
>
> .bind = composite_bind,
> .unbind = composite_unbind,
> -
> +#ifdef USB_COMPOSITE_INCLUDED_BY_CCG
> + /*
> + * This is to keep the Android code in staging working. The current
> + * Kconfig dependencies don't allow any other gadgets besides the
> + * Android one so it is not even a limitation.
> + */
> + .setup = ccg_setup,
> + .disconnect = ccg_disconnect,
> +#else
> .setup = composite_setup,
> .disconnect = composite_disconnect,
> +#endif
Would it make sense to instead of doing that, wrap composite_setup() and
composite_disconnect() inside ifdef and make ccg.c define those two
functions?
> .suspend = composite_suspend,
> .resume = composite_resume,
--
Best regards, _ _
.o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o
..o | Computer Science, Michał “mina86” Nazarewicz (o o)
ooo +----<email/xmpp: mpn@xxxxxxxxxx>--------------ooO--(_)--Ooo--Attachment:
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