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Re: [PATCH V2 1/7] brcmfmac: switch to C function (__brcmf_err) for printing errors

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On 2017-02-02 13:16, Rafał Miłecki wrote:
> From: Rafał Miłecki <rafal@xxxxxxxxxx>
> 
> This will allow extending code and using more detailed messages e.g.
> with the help of dev_err. Note that *two separated* brcmf_err macros
> were replaced thanks to using a simple CONFIG_BRCMDBG symbol check in
> the body.
> 
> Signed-off-by: Rafał Miłecki <rafal@xxxxxxxxxx>
> ---
>  .../net/wireless/broadcom/brcm80211/brcmfmac/common.c | 19 +++++++++++++++++++
>  .../net/wireless/broadcom/brcm80211/brcmfmac/debug.h  | 16 ----------------
>  2 files changed, 19 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
> index f7c8c2e80349..05fb778ddd0f 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
> @@ -218,6 +218,25 @@ int brcmf_c_preinit_dcmds(struct brcmf_if *ifp)
>  	return err;
>  }
>  
> +#ifndef CONFIG_BRCM_TRACING
> +void __brcmf_err(const char *func, const char *fmt, ...)
> +{
> +	struct va_format vaf;
> +	va_list args;
> +
> +	if (!net_ratelimit() && !IS_ENABLED(CONFIG_BRCMDBG))
> +		return;
The IS_ENABLED must not come after net_ratelimit, because net_ratelimit
has side effects.
Also, please keep the IS_ENABLED(CONFIG_BRCMDBG) check inline, since
it's a compile-time check, and that allows gcc to skip unnecessary calls
when disabled.

- Felix



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