linux-kernel - Re: [PATCH 02/31] usb: usbssp: Added some decoding functions.

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Date:   Mon, 10 Sep 2018 20:18:56 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Pawel Laszczak <pawell@...ence.com>
Cc:     linux-usb@...r.kernel.org, Felipe Balbi <balbi@...nel.org>,
        linux-kernel@...r.kernel.org, ltyrala@...ence.com,
        adouglas@...ence.com
Subject: Re: [PATCH 02/31] usb: usbssp: Added some decoding functions.

On Thu, Jul 19, 2018 at 06:57:35PM +0100, Pawel Laszczak wrote:
> This patch add additional functions that converts some fields to string.
> 
> For example function usbssp_trb_comp_code_string take completion
> code value and return string describing completion code.
> 
> Signed-off-by: Pawel Laszczak <pawell@...ence.com>
> ---
>  drivers/usb/usbssp/gadget.h | 580 ++++++++++++++++++++++++++++++++++++
>  1 file changed, 580 insertions(+)
> 
> diff --git a/drivers/usb/usbssp/gadget.h b/drivers/usb/usbssp/gadget.h
> index 49e7271187cc..b5c17603af78 100644
> --- a/drivers/usb/usbssp/gadget.h
> +++ b/drivers/usb/usbssp/gadget.h
> @@ -930,6 +930,73 @@ struct usbssp_transfer_event {
>  #define COMP_UNDEFINED_ERROR			33
>  #define COMP_INVALID_STREAM_ID_ERROR		34
>  
> +static inline const char *usbssp_trb_comp_code_string(u8 status)

<snip>


You have _giant_ inline functions here, why?

Please just put this all in a .c file and let the linker properly handle
things.  You do not want to duplicate all of these crazy strings all
over the place where ever you call these functions.

And I am guessing this is only for some sort of "debugging" mode?  If
so, shouldn't there be a way to not even build this in?  Some systems
are very space constrained...

thanks,

greg k-h