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author | Wen He | 2019-05-08 12:58:18 +0200 |
---|---|---|
committer | Greg Kroah-Hartman | 2019-06-25 05:35:58 +0200 |
commit | 1fcb0e389538fc751ce092756f0564593b4dca20 (patch) | |
tree | beb3bdbd668dc1318004007b99679dbd5766a4b1 /drivers/gpu/drm/arm/malidp_drv.c | |
parent | net: ethernet: mediatek: Use NET_IP_ALIGN to judge if HW RX_2BYTE_OFFSET is e... (diff) | |
download | kernel-qcow2-linux-1fcb0e389538fc751ce092756f0564593b4dca20.tar.gz kernel-qcow2-linux-1fcb0e389538fc751ce092756f0564593b4dca20.tar.xz kernel-qcow2-linux-1fcb0e389538fc751ce092756f0564593b4dca20.zip |
drm/arm/mali-dp: Add a loop around the second set CVAL and try 5 times
[ Upstream commit 6a88e0c14813d00f8520d0e16cd4136c6cf8b4d4 ]
This patch trying to fix monitor freeze issue caused by drm error
'flip_done timed out' on LS1028A platform. this set try is make a loop
around the second setting CVAL and try like 5 times before giveing up.
Signed-off-by: Wen He <wen.he_1@nxp.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/arm/malidp_drv.c')
-rw-r--r-- | drivers/gpu/drm/arm/malidp_drv.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c index 94d6dabec2dc..1ab511e33243 100644 --- a/drivers/gpu/drm/arm/malidp_drv.c +++ b/drivers/gpu/drm/arm/malidp_drv.c @@ -190,6 +190,7 @@ static void malidp_atomic_commit_hw_done(struct drm_atomic_state *state) { struct drm_device *drm = state->dev; struct malidp_drm *malidp = drm->dev_private; + int loop = 5; malidp->event = malidp->crtc.state->event; malidp->crtc.state->event = NULL; @@ -204,8 +205,18 @@ static void malidp_atomic_commit_hw_done(struct drm_atomic_state *state) drm_crtc_vblank_get(&malidp->crtc); /* only set config_valid if the CRTC is enabled */ - if (malidp_set_and_wait_config_valid(drm) < 0) + if (malidp_set_and_wait_config_valid(drm) < 0) { + /* + * make a loop around the second CVAL setting and + * try 5 times before giving up. + */ + while (loop--) { + if (!malidp_set_and_wait_config_valid(drm)) + break; + } DRM_DEBUG_DRIVER("timed out waiting for updated configuration\n"); + } + } else if (malidp->event) { /* CRTC inactive means vblank IRQ is disabled, send event directly */ spin_lock_irq(&drm->event_lock); |