netdev - Re: [PATCH] fec: remove unused #else branches

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Date:	Thu, 15 Jan 2009 13:43:24 +1000
From:	Greg Ungerer <gerg@...pgear.com>
To:	Sascha Hauer <s.hauer@...gutronix.de>
CC:	netdev@...r.kernel.org, Sebastian Siewior <bigeasy@...utronix.de>
Subject: Re: [PATCH] fec: remove unused #else branches

Hi Sascha,

Sascha Hauer wrote:
> The #else branches throughout this driver belong to a PowerPC 8xx for
> which this driver is not used.
> 
> Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de>
> ---
>  drivers/net/fec.c |   94 -----------------------------------------------------
>  1 files changed, 0 insertions(+), 94 deletions(-)
> 
> diff --git a/drivers/net/fec.c b/drivers/net/fec.c
> index 7e33c12..95785ef 100644
> --- a/drivers/net/fec.c
> +++ b/drivers/net/fec.c
> @@ -72,8 +72,6 @@ static unsigned int fec_hw[] = {
>  	(MCF_MBAR+0x30000),
>  #elif defined(CONFIG_M532x)
>  	(MCF_MBAR+0xfc030000),
> -#else
> -	&(((immap_t *)IMAP_ADDR)->im_cpm.cp_fec),
>  #endif
>  };
>  
> @@ -95,8 +93,6 @@ static unsigned char	fec_mac_default[] = {
>  #define	FEC_FLASHMAC	(0xffe04000 + 4)
>  #elif defined(CONFIG_MOD5272)
>  #define FEC_FLASHMAC 	0xffc0406b
> -#else
> -#define	FEC_FLASHMAC	0
>  #endif

The breaks building for a few of the ColdFire targets. They
expect FEC_FLASHMAC to be defined to something.

Those cases could be fixed with "#ifdef"s around them,
or by leaving this "#else" in place (simpler).


>  /* Forward declarations of some structures to support different PHYs
> @@ -1760,96 +1756,6 @@ static void __inline__ fec_uncache(unsigned long addr)
>  {
>  }
>  
> -/* ------------------------------------------------------------------------- */
> -
> -
> -#else
> -
> -/*
> - *	Code specific to the MPC860T setup.
> - */
> -static void __inline__ fec_request_intrs(struct net_device *dev)
> -{
> -	volatile immap_t *immap;
> -
> -	immap = (immap_t *)IMAP_ADDR;	/* pointer to internal registers */
> -
> -	if (request_8xxirq(FEC_INTERRUPT, fec_enet_interrupt, 0, "fec", dev) != 0)
> -		panic("Could not allocate FEC IRQ!");
> -}
> -
> -static void __inline__ fec_get_mac(struct net_device *dev)
> -{
> -	bd_t *bd;
> -
> -	bd = (bd_t *)__res;
> -	memcpy(dev->dev_addr, bd->bi_enetaddr, ETH_ALEN);
> -}
> -
> -static void __inline__ fec_set_mii(struct net_device *dev, struct fec_enet_private *fep)
> -{
> -	extern uint _get_IMMR(void);
> -	volatile immap_t *immap;
> -	volatile fec_t *fecp;
> -
> -	fecp = fep->hwp;
> -	immap = (immap_t *)IMAP_ADDR;	/* pointer to internal registers */
> -
> -	/* Configure all of port D for MII.
> -	*/
> -	immap->im_ioport.iop_pdpar = 0x1fff;
> -
> -	/* Bits moved from Rev. D onward.
> -	*/
> -	if ((_get_IMMR() & 0xffff) < 0x0501)
> -		immap->im_ioport.iop_pddir = 0x1c58;	/* Pre rev. D */
> -	else
> -		immap->im_ioport.iop_pddir = 0x1fff;	/* Rev. D and later */
> -
> -	/* Set MII speed to 2.5 MHz
> -	*/
> -	fecp->fec_mii_speed = fep->phy_speed =
> -		((bd->bi_busfreq * 1000000) / 2500000) & 0x7e;
> -}
> -
> -static void __inline__ fec_enable_phy_intr(void)
> -{
> -	volatile fec_t *fecp;
> -
> -	fecp = fep->hwp;
> -
> -	/* Enable MII command finished interrupt
> -	*/
> -	fecp->fec_ivec = (FEC_INTERRUPT/2) << 29;
> -}
> -
> -static void __inline__ fec_disable_phy_intr(void)
> -{
> -}
> -
> -static void __inline__ fec_phy_ack_intr(void)
> -{
> -}
> -
> -static void __inline__ fec_localhw_setup(void)
> -{
> -	volatile fec_t *fecp;
> -
> -	fecp = fep->hwp;
> -	fecp->fec_r_hash = PKT_MAXBUF_SIZE;
> -	/* Enable big endian and don't care about SDMA FC.
> -	*/
> -	fecp->fec_fun_code = 0x78000000;
> -}
> -
> -static void __inline__ fec_uncache(unsigned long addr)
> -{
> -	pte_t *pte;
> -	pte = va_to_pte(mem_addr);
> -	pte_val(*pte) |= _PAGE_NO_CACHE;
> -	flush_tlb_page(init_mm.mmap, mem_addr);
> -}
> -
>  #endif
>  
>  /* ------------------------------------------------------------------------- */

I don't see any problems with the rest of this patch.

Regards
Greg


------------------------------------------------------------------------
Greg Ungerer  --  Principal Engineer        EMAIL:     gerg@...pgear.com
SnapGear, a McAfee Company                  PHONE:       +61 7 3435 2888
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