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drm/i915: Tighten mmio arrays for MIPI_PORT

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drivers/gpu/drm/i915/intel_dsi.c: In function ‘intel_dsi_prepare’:
drivers/gpu/drm/i915/intel_dsi.c:1308:1: error: the frame size of 2488 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]

which is caused by the compiling expanding every _MIPI_PORT into an
on-stack array of u32[3] at every callsite. Not sure why only one
machine/compiler appears susceptible, but with a minor tweak to _MIPI_PORT
we can defer the error until later.

This is a partial revert of commit ce64645d86 ("drm/i915: use variadic
macros and arrays to choose port/pipe based registers") for a particular
bad offender.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170228145519.18012-1-chris@chris-wilson.co.uk
Acked-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Chris Wilson 2017-02-28 14:55:19 +00:00
parent 0c33518db7
commit f4c3a88e5f
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/i915_reg.h
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@ -8248,7 +8248,7 @@ enum {
/* MIPI DSI registers */
#define _MIPI_PORT(port, a, c) _PORT3(port, a, 0, c) /* ports A and C only */
#define _MIPI_PORT(port, a, c) ((port) ? c : a) /* ports A and C only */
#define _MMIO_MIPI(port, a, c) _MMIO(_MIPI_PORT(port, a, c))
#define MIPIO_TXESC_CLK_DIV1 _MMIO(0x160004)