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* [PATCH] regulator: wm831x-ldo: Check return value of wm831x_reg_read()
@ 2012-07-31 13:28 Axel Lin
  2012-08-01 20:02 ` Mark Brown
  0 siblings, 1 reply; 2+ messages in thread
From: Axel Lin @ 2012-07-31 13:28 UTC (permalink / raw)
  To: Mark Brown; +Cc: Liam Girdwood, linux-kernel

wm831x_reg_read() returns negative error code on failure.
This prevents using the error code as the value read.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
---
 drivers/regulator/wm831x-ldo.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/regulator/wm831x-ldo.c b/drivers/regulator/wm831x-ldo.c
index 5cb70ca..56a6de3 100644
--- a/drivers/regulator/wm831x-ldo.c
+++ b/drivers/regulator/wm831x-ldo.c
@@ -205,6 +205,8 @@ static int wm831x_gp_ldo_get_status(struct regulator_dev *rdev)
 
 	/* Is it reporting under voltage? */
 	ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS);
+	if (ret < 0)
+		return ret;
 	if (ret & mask)
 		return REGULATOR_STATUS_ERROR;
 
@@ -469,6 +471,8 @@ static int wm831x_aldo_get_status(struct regulator_dev *rdev)
 
 	/* Is it reporting under voltage? */
 	ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS);
+	if (ret < 0)
+		return ret;
 	if (ret & mask)
 		return REGULATOR_STATUS_ERROR;
 
-- 
1.7.9.5




^ permalink raw reply related	[flat|nested] 2+ messages in thread

* Re: [PATCH] regulator: wm831x-ldo: Check return value of wm831x_reg_read()
  2012-07-31 13:28 [PATCH] regulator: wm831x-ldo: Check return value of wm831x_reg_read() Axel Lin
@ 2012-08-01 20:02 ` Mark Brown
  0 siblings, 0 replies; 2+ messages in thread
From: Mark Brown @ 2012-08-01 20:02 UTC (permalink / raw)
  To: Axel Lin; +Cc: Liam Girdwood, linux-kernel

On Tue, Jul 31, 2012 at 09:28:26PM +0800, Axel Lin wrote:
> wm831x_reg_read() returns negative error code on failure.
> This prevents using the error code as the value read.

Applied, thanks.

^ permalink raw reply	[flat|nested] 2+ messages in thread

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2012-07-31 13:28 [PATCH] regulator: wm831x-ldo: Check return value of wm831x_reg_read() Axel Lin
2012-08-01 20:02 ` Mark Brown

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