[U-Boot] [PATCH] mmc:dcache: Cache line size aligned internal MMC buffers

[Wolfgang Denk]

Dear Anton Staaf,

In message <CAF6FioWBsjFa+QdFNHEQGO50eLoqZMc--Yt3-iYX6DWr=hcOrg at mail.gmail.com> you wrote:
>
> >> 4. get_dcache_line_size() can be simply defined as
> >> #define get_dcache_line_size() CONFIG_SYS_CACHE_LINE_SIZE if we
> >> _really_ want to save a few bytes.
> >
> > Actually I fail to understand why we would ever need
> > get_dcache_line_size() in a boot loader.
> 
> It is required so that we can correctly allocate buffers that will be
> used by DMA engines to read or write data.  The reason that these

No, it is definitely NOT needed for this purpose - we have been using
CONFIG_SYS_CACHE_LINE_SIZE for more than a decade without problems, so
I don't really understand why we now would need a new function for
this?


Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Brain: an apparatus with which we think we think.    - Ambrose Bierce