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[v2,2/3] drm: adv7511: mark ADV7511_REG_EDID_READ_CTRL volatile

Message ID 1452290210-20629-3-git-send-email-wsa@the-dreams.de
State Under Review
Delegated to: Geert Uytterhoeven
Headers show

Commit Message

Wolfram Sang Jan. 8, 2016, 9:56 p.m. UTC
From: Wolfram Sang <wsa+renesas@sang-engineering.com>

This register includes a counter which is decremented by the chip on I2C
failures. Also, it is reset when powering down.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Archit Taneja <architt@codeaurora.org>
---
 drivers/gpu/drm/i2c/adv7511.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/drivers/gpu/drm/i2c/adv7511.c b/drivers/gpu/drm/i2c/adv7511.c
index db7435a4517fb4..e1756a452d6980 100644
--- a/drivers/gpu/drm/i2c/adv7511.c
+++ b/drivers/gpu/drm/i2c/adv7511.c
@@ -136,6 +136,7 @@  static bool adv7511_register_volatile(struct device *dev, unsigned int reg)
 	case ADV7511_REG_BKSV(3):
 	case ADV7511_REG_BKSV(4):
 	case ADV7511_REG_DDC_STATUS:
+	case ADV7511_REG_EDID_READ_CTRL:
 	case ADV7511_REG_BSTATUS(0):
 	case ADV7511_REG_BSTATUS(1):
 	case ADV7511_REG_CHIP_ID_HIGH: