By using the out-of-line intel_wait_for_register() not only do we can
efficiency from using the hybrid wait_for() contained within, but we
avoid code bloat from the numerous inlined loops, in total (all patches):

   text    data     bss     dec     hex filename
1078551    4557     416 1083524  108884 drivers/gpu/drm/i915/i915.ko
1070775    4557     416 1075748  106a24 drivers/gpu/drm/i915/i915.ko

Signed-off-by: Chris Wilson <[email protected]>
Reviewed-by: Tvrtko Ursulin <[email protected]>
---
 drivers/gpu/drm/i915/intel_dsi.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 146d8329369e..9bbc1f4276cd 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -160,8 +160,10 @@ static ssize_t intel_dsi_host_transfer(struct 
mipi_dsi_host *host,
 
        /* note: this is never true for reads */
        if (packet.payload_length) {
-
-               if (wait_for((I915_READ(MIPI_GEN_FIFO_STAT(port)) & data_mask) 
== 0, 50))
+               if (intel_wait_for_register(dev_priv,
+                                           MIPI_GEN_FIFO_STAT(port),
+                                           data_mask, 0,
+                                           50))
                        DRM_ERROR("Timeout waiting for HS/LP DATA FIFO 
!full\n");
 
                write_data(dev_priv, data_reg, packet.payload,
-- 
2.8.1

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