linux-kernel - [RFC] [PATCH] BMP085 update

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Date:	Tue, 22 Jun 2010 14:46:25 +0530
From:	"Datta, Shubhrajyoti" <shubhrajyoti@...com>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:	Christoph Mair <christoph.mair@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jonathan Cameron <kernel@...23.retrosnub.co.uk>
Subject: [RFC] [PATCH] BMP085 update

Updates for the BMP085 pressure sensor
- Optimizing the wait time for the pressure sensor
- Definition of long is arch dependent so making it u32.

Signed-off-by: Shubhrajyoti D <shubhrajyoti@...com>
---
 drivers/misc/bmp085.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/misc/bmp085.c b/drivers/misc/bmp085.c
index 16a2b2c..8af6f1b 100644
--- a/drivers/misc/bmp085.c
+++ b/drivers/misc/bmp085.c
@@ -60,7 +60,7 @@ struct bmp085_data {
 	u32 raw_temperature;
 	u32 raw_pressure;
 	unsigned char oversampling_setting;
-	unsigned long last_temp_measurement;
+	u32 last_temp_measurement;
 	s32 b6; /* calculated temperature correction coefficient */
 };
 
@@ -144,7 +144,7 @@ static s32 bmp085_update_raw_pressure(struct bmp085_data *data)
 	}
 
 	/* wait for the end of conversion */
-	msleep(2+(3 << data->oversampling_setting<<1));
+	msleep(2+(3 << data->oversampling_setting ));
 
 	/* copy data into a u32 (4 bytes), but skip the first byte. */
 	status = i2c_smbus_read_i2c_block_data(data->client,
-- 
1.5.4.7

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