linux-kernel - Re: [PATCH] brcmfmac: use const char * for interface name in brcmf_add

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Date:	Fri, 17 Jun 2016 04:23:14 -0700
From:	Joe Perches <joe@...ches.com>
To:	Rafał Miłecki <zajec5@...il.com>,
	Kalle Valo <kvalo@...eaurora.org>
Cc:	Arend van Spriel <arend.vanspriel@...adcom.com>,
	Franky Lin <franky.lin@...adcom.com>,
	Hante Meuleman <hante.meuleman@...adcom.com>,
	Pieter-Paul Giesberts <pieter-paul.giesberts@...adcom.com>,
	"Franky (Zhenhui) Lin" <frankyl@...adcom.com>,
	"open list:BROADCOM BRCM80211 IEEE802.11n WIRELESS DRIVER" 
	<linux-wireless@...r.kernel.org>,
	"open list:BROADCOM BRCM80211 IEEE802.11n WIRELESS DRIVER" 
	<brcm80211-dev-list.pdl@...adcom.com>,
	"open list:NETWORKING DRIVERS" <netdev@...r.kernel.org>,
	open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] brcmfmac: use const char * for interface name in
 brcmf_add_if

On Fri, 2016-06-17 at 12:48 +0200, Rafał Miłecki wrote:
> This function can work just fine with const pointer, it only calls
> alloc_netdev which take const as well. Moreover it makes this function
> more flexible as some cfg80211 callback may provide const char * as
> well, e.g. add_virtual_intf. This will be needed for more advanced
> interface management.
[]
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
[]
> @@ -638,7 +638,7 @@ fail:
>  }
>  
>  struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx,
> -			      bool is_p2pdev, char *name, u8 *mac_addr)
> +			      bool is_p2pdev, const char *name, u8 *mac_addr)

Looks like mac_addr should be const too

>  {
>  	struct brcmf_if *ifp;
>  	struct net_device *ndev;
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
[]
> @@ -215,7 +215,7 @@ char *brcmf_ifname(struct brcmf_if *ifp);
>  struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx);
>  int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked);
>  struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx,
> -			      bool is_p2pdev, char *name, u8 *mac_addr);
> +			      bool is_p2pdev, const char *name, u8 *mac_addr);
>  void brcmf_remove_interface(struct brcmf_if *ifp, bool rtnl_locked);
>  void brcmf_txflowblock_if(struct brcmf_if *ifp,
>  			  enum brcmf_netif_stop_reason reason, bool state);