[PATCH] drm/mipi_dbi: Fix off-by-one bugs in mipi_dbi_blank()

[Noralf Trønnes]

Den 30.12.2019 14.06, skrev Geert Uytterhoeven:
> When configuring the frame memory window, the last column and row
> numbers are written to the column resp. page address registers.  These
> numbers are thus one less than the actual window width resp. height.
> 
> While this is handled correctly in mipi_dbi_fb_dirty() since commit
> 03ceb1c8dfd1e293 ("drm/tinydrm: Fix setting of the column/page end
> addresses."), it is not in mipi_dbi_blank().  The latter still forgets
> to subtract one when calculating the most significant bytes of the
> column and row numbers, thus programming wrong values when the display
> width or height is a multiple of 256.
> 
> Fixes: 02dd95fe31693626 ("drm/tinydrm: Add MIPI DBI support")
> Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
> ---

Thanks, applied to drm-misc-next.

Noralf.