gcc-8 points out a condition that almost certainly doesn't
do what the author had in mind:

drivers/gpu/drm/gma500/mdfld_intel_display.c: In function 
'mdfldWaitForPipeEnable':
drivers/gpu/drm/gma500/mdfld_intel_display.c:102:37: error: bitwise comparison 
always evaluates to false [-Werror=tautological-compare]

This changes it to a simple bit mask operation to check
whether the bit is set.

Fixes: 026abc333205 ("gma500: initial medfield merge")
Signed-off-by: Arnd Bergmann <a...@arndb.de>
---
 drivers/gpu/drm/gma500/mdfld_intel_display.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/gma500/mdfld_intel_display.c 
b/drivers/gpu/drm/gma500/mdfld_intel_display.c
index 531e4450c000..5c066448be5b 100644
--- a/drivers/gpu/drm/gma500/mdfld_intel_display.c
+++ b/drivers/gpu/drm/gma500/mdfld_intel_display.c
@@ -99,7 +99,7 @@ void mdfldWaitForPipeEnable(struct drm_device *dev, int pipe)
        /* Wait for for the pipe enable to take effect. */
        for (count = 0; count < COUNT_MAX; count++) {
                temp = REG_READ(map->conf);
-               if ((temp & PIPEACONF_PIPE_STATE) == 1)
+               if (temp & PIPEACONF_PIPE_STATE)
                        break;
        }
 }
-- 
2.9.0

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