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authorHarvey Harrison <harvey.harrison@gmail.com>2008-09-22 17:53:50 -0400
committerAnton Vorontsov <cbouatmailru@gmail.com>2008-09-25 19:46:12 -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 62d4948e8206..0c056fcc01ce 100644
--- a/drivers/power/bq27x00_battery.c
+++ b/drivers/power/bq27x00_battery.c
@@ -23,8 +23,8 @@
23#include <linux/platform_device.h> 23#include <linux/platform_device.h>
24#include <linux/power_supply.h> 24#include <linux/power_supply.h>
25#include <linux/idr.h> 25#include <linux/idr.h>
26
27#include <linux/i2c.h> 26#include <linux/i2c.h>
27#include <asm/unaligned.h>
28 28
29#define DRIVER_VERSION "1.0.0" 29#define DRIVER_VERSION "1.0.0"
30 30
@@ -33,7 +33,6 @@
33#define BQ27x00_REG_RSOC 0x0B /* Relative State-of-Charge */ 33#define BQ27x00_REG_RSOC 0x0B /* Relative State-of-Charge */
34#define BQ27x00_REG_AI 0x14 34#define BQ27x00_REG_AI 0x14
35#define BQ27x00_REG_FLAGS 0x0A 35#define BQ27x00_REG_FLAGS 0x0A
36#define HIGH_BYTE(A) ((A) << 8)
37 36
38/* If the system has several batteries we need a different name for each 37/* If the system has several batteries we need a different name for each
39 * of them... 38 * of them...
@@ -239,7 +238,7 @@ static int bq27200_read(u8 reg, int *rt_value, int b_single,
239 err = i2c_transfer(client->adapter, msg, 1); 238 err = i2c_transfer(client->adapter, msg, 1);
240 if (err >= 0) { 239 if (err >= 0) {
241 if (!b_single) 240 if (!b_single)
242 *rt_value = data[1] | HIGH_BYTE(data[0]); 241 *rt_value = get_unaligned_be16(data);
243 else 242 else
244 *rt_value = data[0]; 243 *rt_value = data[0];
245 244