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usb: gadget: rndis: remove the limit of available rndis connections

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RNDIS function has a limitation on the number of allowed instances.
So far it has been RNDIS_MAX_CONFIGS, which happens to be one.
In order to eliminate this kind of arbitrary limitation we should not
preallocate a predefined (RNDIS_MAX_CONFIGS) array of struct rndis_params
instances but instead allow allocating them on demand.

This patch allocates struct rndis_params on demand in rndis_register().
Coversly, the structure is free()'d in rndis_deregister().
If CONFIG_USB_GADGET_DEBUG_FILES is set, the proc files are created which
is the same behaviour as before, but the moment of creation is delayed
until struct rndis_params is actually allocated.

rnids_init() and rndis_exit() have nothing to do, so they are eliminated.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Andrzej Pietrasiewicz
2015-02-06 13:43:30 +01:00
committed by Felipe Balbi
parent 6122b151c7
commit d6d22922d9
4 changed files with 78 additions and 88 deletions
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2
drivers/usb/gadget/function/u_rndis.h
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@@ -39,8 +39,6 @@ struct f_rndis_opts {
int refcnt;
};
int rndis_init(void);
void rndis_exit(void);
void rndis_borrow_net(struct usb_function_instance *f, struct net_device *net);
#endif /* U_RNDIS_H */