From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Liam Girdwood <lrg@ti.com>
Cc: linux-kernel@vger.kernel.org,
patches@opensource.wolfsonmicro.com,
Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: [PATCH v2] regulator: Don't create voltage sysfs entries if we can't read voltage
Date: Wed, 2 Nov 2011 13:06:59 +0000 [thread overview]
Message-ID: <1320239219-14835-1-git-send-email-broonie@opensource.wolfsonmicro.com> (raw)
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---
v1 had an uncommitted change on top, now committed.
drivers/regulator/core.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 669d021..679f92e 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -2503,7 +2503,8 @@ static int add_regulator_attributes(struct regulator_dev *rdev)
int status = 0;
/* some attributes need specific methods to be displayed */
- if (ops->get_voltage || ops->get_voltage_sel) {
+ if ((ops->get_voltage && ops->get_voltage(rdev) >= 0) ||
+ (ops->get_voltage_sel && ops->get_voltage_sel(rdev) >= 0)) {
status = device_create_file(dev, &dev_attr_microvolts);
if (status < 0)
return status;
--
1.7.7.1
reply other threads:[~2011-11-02 13:07 UTC|newest]
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