[U-Boot] [PATCH 5/7] dfu:cmd: Support for DFU u-boot command

[Marek Vasut <marex@denx.de>]

Dear Lukasz Majewski,

> Hi Marek,
> 
> > Dear Lukasz Majewski,
> > 
> > > Support for u-boot's command line command "dfu <interface> <dev>
> > > [list]".
> > > 
> > > Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
> > > Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
> > > Cc: Marek Vasut <marex@denx.de>
> > > ---
> > 
> > [...]
> > 
> > > +int do_dfu(cmd_tbl_t *cmdtp, int flag, int argc, char * const
> > > argv[]) +{
> > > +	char *str_env = NULL, *env_bkp = NULL;
> > > +	static char *s = "dfu";
> > > +	int ret = 0;
> > > +
> > > +	if (argc < 3)
> > > +		return CMD_RET_USAGE;
> > > +
> > > +	str_env = getenv("dfu_alt_info");
> > > +	if (str_env == NULL) {
> > > +		printf("%s: \"dfu_alt_info\" env variable not
> > > defined!\n",
> > > +		       __func__);
> > 
> > I was always curious if it's not possible to do something like
> > 
> > puts(__func__ "rest of string");
> > 
> > Maybe it'd help the overhead a bit? Certainly, it's beyond the scope
> > of this patchset, I'm just curious :)
> 
> It is a good idea, since many error/info messages are supposed to
> produce following output:
> 
> "dfu_write: Not enough space!"
> 
> Putting there the __func__ name would improve structure and speed up
> finding right place.

And if you want to use even __LINE__, look up __stringify patch in the ML 
archives ;-)

> > > +		return CMD_RET_FAILURE;
> > > +	}
> > 
> > [...]
> > 
> > Best regards,
> > Marek Vasut

Best regards,
Marek Vasut