linux-kernel - [PATCH 7/7] bq27x00: Fix reporting error messages

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Date:	Tue, 20 Sep 2011 17:18:53 +0200
From:	Pali Rohár <pali.rohar@...il.com>
To:	linux-kernel@...r.kernel.org, Anton Vorontsov <cbou@...l.ru>,
	syed rafiuddin <rafiuddin.sayed@...il.com>,
	Rodolfo Giometti <giometti@...ux.it>
Cc:	Pali Rohár <pali.rohar@...il.com>
Subject: [PATCH 7/7] bq27x00: Fix reporting error messages

---
 drivers/power/bq27x00_battery.c |   13 +++++++++----
 1 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c
index c4c403e..46db966 100644
--- a/drivers/power/bq27x00_battery.c
+++ b/drivers/power/bq27x00_battery.c
@@ -170,7 +170,7 @@ static int bq27x00_battery_read_charge(struct bq27x00_device_info *di, u8 reg)
 
 	charge = bq27x00_read(di, reg, false);
 	if (charge < 0) {
-		dev_err(di->dev, "error reading nominal available capacity\n");
+		dev_err(di->dev, "error reading charge register %02x: %d\n", reg, charge);
 		return charge;
 	}
 
@@ -295,7 +295,7 @@ static int bq27x00_battery_read_time(struct bq27x00_device_info *di, u8 reg)
 
 	tval = bq27x00_read(di, reg, false);
 	if (tval < 0) {
-		dev_err(di->dev, "error reading register %02x: %d\n", reg, tval);
+		dev_err(di->dev, "error reading time register %02x: %d\n", reg, tval);
 		return tval;
 	}
 
@@ -313,6 +313,7 @@ static void bq27x00_update(struct bq27x00_device_info *di)
 	cache.flags = bq27x00_read(di, BQ27x00_REG_FLAGS, is_bq27500);
 	if (cache.flags >= 0) {
 		if (!is_bq27500 && (cache.flags & BQ27000_FLAG_CI)) {
+			dev_err(di->dev, "battery is not calibrated! ignoring capacity values\n");
 			cache.capacity = -ENODATA;
 			cache.energy = -ENODATA;
 			cache.time_to_empty = -ENODATA;
@@ -369,8 +370,10 @@ static int bq27x00_battery_current(struct bq27x00_device_info *di,
 	int flags;
 
 	curr = bq27x00_read(di, BQ27x00_REG_AI, false);
-	if (curr < 0)
+	if (curr < 0) {
+		dev_err(di->dev, "error reading current");
 		return curr;
+	}
 
 	if (di->chip == BQ27500) {
 		/* bq27500 returns signed value */
@@ -460,8 +463,10 @@ static int bq27x00_battery_voltage(struct bq27x00_device_info *di,
 	int volt;
 
 	volt = bq27x00_read(di, BQ27x00_REG_VOLT, false);
-	if (volt < 0)
+	if (volt < 0) {
+		dev_err(di->dev, "error reading voltage\n");
 		return volt;
+	}
 
 	val->intval = volt * 1000;
 
-- 
1.7.4.1

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