[U-Boot] [PATCH 4/6] sf: Update read/write command macros

Marek Vasut marex at denx.de
Mon Jan 20 14:06:09 CET 2014


On Monday, January 20, 2014 at 12:46:07 PM, Jagan Teki wrote:
> On Mon, Jan 20, 2014 at 4:43 PM, Detlev Zundel <dzu at denx.de> wrote:
> > Hi Jagan,
> > 
> >> On Sun, Jan 19, 2014 at 2:06 AM, Marek Vasut <marex at denx.de> wrote:
> >>> On Saturday, January 18, 2014 at 09:06:31 PM, Jagannadha
> >>> Sutradharudu Teki
> >>> 
> >>> wrote:
> >>>> - Used readable names for read/write command macros
> >>>> - Added comments for the same
> >>>> 
> >>>> Signed-off-by: Jagannadha Sutradharudu Teki <jaganna at xilinx.com>
> >>>> Cc: Marek Vasut <marex at denx.de>
> >>>> Cc: Simon Glass <sjg at chromium.org>
> >>> 
> >>> Does this patch have any impact other than making the code harder to
> >>> understand
> >>> ? :-(
> >>> 
> >>> What's the rationale for making the code more cryptic ?
> >> 
> >> No issues I guess with the readability as each macro we can easily
> >> understand.
> >> like CMD_RD_QUAD --> command_read_quad
> >> 
> >>       CMD_WR_PAGE --> command_write_page_program
> >> 
> >> And this will minimize the macro length - good for in coding and more
> >> over description is added in drivers/mtd/spi/sf_internal.h anyway.
> > 
> > Again I agree with Marek that readability of code is more important than
> > saving a few characters while coding.  This is especially true as
> > editors can support you in coding (Emacs has lots of packages to help
> > here for example).
> 
> I don't think nothing much gone the readability with these updated:
> CMD_READ_ARRAY_FAST has updated CMD_RD_FAST and it seems like
> easy to understand. and anyway I have added comments for full name as well.

CMD_READ_ARRAY_FAST contains all the necessary bits for me to understand what 
the macro means. CMD_RD_FAST does not. I fail to see the rationale behind 
changing the names.

> Few of the flashes can be call this as array fast read and fewer call
> this as fast read
> and few more call this as high frequency read. CMD_RD_FAST will suits
> all these names.
> 
> Comments please!

If you want to align the names with anything, align then with linux's m25p80.c 
driver . But I see this change as moot and confusing, sorry.

Best regards,
Marek Vasut


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