One of Jean-Francois patches changed the EDID polling to once every
10ms for 10 interations, whereas the original code did 1ms for 100
interations. This appears to cause boot-time detection to take
slightly - but noticably - longer. Revert this change.
Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx>
---
Jean,
I'm not sure why you made the change along with adding IRQ support in
"drm/i2c: tda998x: use irq for connection status and EDID read" - you
didn't include any commentry as to why you made this change. However,
we shouldn't write code assuming HZ=100 - where this kind of thing
matters, we should come up with better solutions (eg, using jiffy-based
timeouts if we want to timeout after a set period of time.)
I'm not sure whether one or other really is faster, it's just a
perception I have. Anyway, let's just revert back to the original
code for the non-IRQ case, and maybe improve it later.
drivers/gpu/drm/i2c/tda998x_drv.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index 40c4f658abfb..956d857ee2c9 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -1041,8 +1041,8 @@ static int read_edid_block(struct tda998x_priv *priv, uint8_t *buf, int blk)
return i;
}
} else {
- for (i = 10; i > 0; i--) {
- msleep(10);
+ for (i = 100; i > 0; i--) {
+ msleep(1);
ret = reg_read(priv, REG_INT_FLAGS_2);
if (ret < 0)
return ret;
--
1.8.3.1
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