From c0179dbae96d5823b4ade39cdfa44812d6875b41 Mon Sep 17 00:00:00 2001

From: Anitha Chrisanthus <anitha.chrisanthus@intel.com>

Date: Mon, 19 Jul 2021 16:28:51 -0700

Subject: [PATCH] drm/kmb: Corrected typo in handle_lcd_irq

Git-commit: 004d2719806fb8e355c1bccd538e82c04319d391

Patch-mainline: v5.15-rc7

References: stable-5.14.15

[ Upstream commit 004d2719806fb8e355c1bccd538e82c04319d391 ]

Check for Overflow bits for layer3 in the irq handler.

Fixes: 7f7b96a8a0a1 ("drm/kmb: Add support for KeemBay Display")

Signed-off-by: Anitha Chrisanthus <anitha.chrisanthus@intel.com>

Acked-by: Sam Ravnborg <sam@ravnborg.org>

Link: https://patchwork.freedesktop.org/patch/msgid/20211013233632.471892-5-anitha.chrisanthus@intel.com

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

Signed-off-by: Sasha Levin <sashal@kernel.org>

Acked-by: Takashi Iwai <tiwai@suse.de>

---

 drivers/gpu/drm/kmb/kmb_drv.c | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/kmb/kmb_drv.c b/drivers/gpu/drm/kmb/kmb_drv.c

index f54392ec4fab..bb7eca9e13ae 100644

--- a/drivers/gpu/drm/kmb/kmb_drv.c

+++ b/drivers/gpu/drm/kmb/kmb_drv.c

@@ -381,7 +381,7 @@ static irqreturn_t handle_lcd_irq(struct drm_device *dev)

 		if (val & LAYER3_DMA_FIFO_UNDERFLOW)

 			drm_dbg(&kmb->drm,

 				"LAYER3:GL1 DMA UNDERFLOW val = 0x%lx", val);

-		if (val & LAYER3_DMA_FIFO_UNDERFLOW)

+		if (val & LAYER3_DMA_FIFO_OVERFLOW)

 			drm_dbg(&kmb->drm,

 				"LAYER3:GL1 DMA OVERFLOW val = 0x%lx", val);

 	}

-- 

2.26.2