4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Arnd Bergmann <arnd@xxxxxxxx>
commit 67a3b63a54cbe18944191f43d644686731cf30c7 upstream.
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 <arnd@xxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20170905074741.435324-1-arnd@xxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/gma500/mdfld_intel_display.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- 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_d
/* 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;
}
}
