linux-kernel - [PATCH] mfd: wm5102: Mark DSP memory regions as volatile

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Message-Id: <1354129456-27129-1-git-send-email-broonie@opensource.wolfsonmicro.com>
Date:	Wed, 28 Nov 2012 19:04:16 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Samuel Ortiz <sameo@...ux.intel.com>
Cc:	linux-kernel@...r.kernel.org, patches@...nsource.wolfsonmicro.com,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [PATCH] mfd: wm5102: Mark DSP memory regions as volatile

We can cache some of them but this is simpler for now.

Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
---
 drivers/mfd/wm5102-tables.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mfd/wm5102-tables.c b/drivers/mfd/wm5102-tables.c
index 065ffd3..965e60f 100644
--- a/drivers/mfd/wm5102-tables.c
+++ b/drivers/mfd/wm5102-tables.c
@@ -1832,6 +1832,9 @@ static bool wm5102_readable_register(struct device *dev, unsigned int reg)
 
 static bool wm5102_volatile_register(struct device *dev, unsigned int reg)
 {
+	if (reg > 0xffff)
+		return true;
+
 	switch (reg) {
 	case ARIZONA_SOFTWARE_RESET:
 	case ARIZONA_DEVICE_REVISION:
-- 
1.7.10.4

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