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authorHarvey Harrison <harvey.harrison@gmail.com>2008-09-22 14:53:50 -0700
committerAnton Vorontsov <cbouatmailru@gmail.com>2008-09-26 03:46:12 +0400
commit8aef7e8f8de2d900da892085edbf14ea35fe6881 (patch)
tree07d4d60b16cab0ee710e51b635139899db234db9 /drivers/power/bq27x00_battery.c
parent6a9037887ccea92152b034edeb15d453d1a98555 (diff)
bq27x00_battery: use unaligned access helper
Remove hand-rolled get_unaligned_be16, this points to a possible bug as bq27x00_read does another endian byteswap which sparse notices: drivers/power/bq27x00_battery.c:81:14: warning: cast to restricted __be16 Which should probably be checked. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Diffstat (limited to 'drivers/power/bq27x00_battery.c')
-rw-r--r--drivers/power/bq27x00_battery.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c
index 62d4948e820..0c056fcc01c 100644
--- a/drivers/power/bq27x00_battery.c
+++ b/drivers/power/bq27x00_battery.c
@@ -23,8 +23,8 @@
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/idr.h>
-
#include <linux/i2c.h>
+#include <asm/unaligned.h>
#define DRIVER_VERSION "1.0.0"
@@ -33,7 +33,6 @@
#define BQ27x00_REG_RSOC 0x0B /* Relative State-of-Charge */
#define BQ27x00_REG_AI 0x14
#define BQ27x00_REG_FLAGS 0x0A
-#define HIGH_BYTE(A) ((A) << 8)
/* If the system has several batteries we need a different name for each
* of them...
@@ -239,7 +238,7 @@ static int bq27200_read(u8 reg, int *rt_value, int b_single,
err = i2c_transfer(client->adapter, msg, 1);
if (err >= 0) {
if (!b_single)
- *rt_value = data[1] | HIGH_BYTE(data[0]);
+ *rt_value = get_unaligned_be16(data);
else
*rt_value = data[0];