linux-kernel - Re: [PATCH] ath10k: remove unused ath10k_get_ring

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Message-ID: <ZBtnbgeW9T75ZXfv@corigine.com>
Date:   Wed, 22 Mar 2023 21:40:43 +0100
From:   Simon Horman <simon.horman@...igine.com>
To:     Tom Rix <trix@...hat.com>
Cc:     kvalo@...nel.org, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, nathan@...nel.org,
        ndesaulniers@...gle.com, ath10k@...ts.infradead.org,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH] ath10k: remove unused ath10k_get_ring_byte function

On Wed, Mar 22, 2023 at 08:28:55AM -0400, Tom Rix wrote:
> clang with W=1 reports
> drivers/net/wireless/ath/ath10k/ce.c:88:1: error:
>   unused function 'ath10k_get_ring_byte' [-Werror,-Wunused-function]
> ath10k_get_ring_byte(unsigned int offset,
> ^
> This function is not used so remove it.
> 
> Signed-off-by: Tom Rix <trix@...hat.com>

Hi Tom,

this looks good. But this patch applied, and with clang 11.0.2,
make CC=clang W=1 tells me:

drivers/net/wireless/ath/ath10k/ce.c:80:19: error: unused function 'shadow_dst_wr_ind_addr' [-Werror,-Wunused-function]
static inline u32 shadow_dst_wr_ind_addr(struct ath10k *ar,
                  ^
drivers/net/wireless/ath/ath10k/ce.c:434:20: error: unused function 'ath10k_ce_error_intr_enable' [-Werror,-Wunused-function]
static inline void ath10k_ce_error_intr_enable(struct ath10k *ar,
                   ^
Perhaps those functions should be removed too?

> ---
>  drivers/net/wireless/ath/ath10k/ce.c | 7 -------
>  1 file changed, 7 deletions(-)
> 
> diff --git a/drivers/net/wireless/ath/ath10k/ce.c b/drivers/net/wireless/ath/ath10k/ce.c
> index b656cfc03648..c27b8204718a 100644
> --- a/drivers/net/wireless/ath/ath10k/ce.c
> +++ b/drivers/net/wireless/ath/ath10k/ce.c
> @@ -84,13 +84,6 @@ ath10k_set_ring_byte(unsigned int offset,
>  	return ((offset << addr_map->lsb) & addr_map->mask);
>  }
>  
> -static inline unsigned int
> -ath10k_get_ring_byte(unsigned int offset,
> -		     struct ath10k_hw_ce_regs_addr_map *addr_map)
> -{
> -	return ((offset & addr_map->mask) >> (addr_map->lsb));
> -}
> -
>  static inline u32 ath10k_ce_read32(struct ath10k *ar, u32 offset)
>  {
>  	struct ath10k_ce *ce = ath10k_ce_priv(ar);
> -- 
> 2.27.0
>