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authorJean Delvare <khali@linux-fr.org>2010-05-21 16:40:56 (GMT)
committerJean Delvare <khali@linux-fr.org>2010-05-21 16:40:56 (GMT)
commitc5aa69285c573e42042530be86b7af6f5fe9e240 (patch)
tree9cf9d795b9471d78bba341632d45d2da82540948 /drivers/i2c
parente624dbd32446f40caad05284bf6cb8a5337d2048 (diff)
downloadlinux-c5aa69285c573e42042530be86b7af6f5fe9e240.tar.xz
i2c-stub: Expose the default functionality flags
It is easier to adjust the flags when you know their default value. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Mark M. Hoffman <mhoffman@lightlink.com>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/i2c-stub.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/i2c/busses/i2c-stub.c b/drivers/i2c/busses/i2c-stub.c
index 0c770ea..b1b34479 100644
--- a/drivers/i2c/busses/i2c-stub.c
+++ b/drivers/i2c/busses/i2c-stub.c
@@ -29,13 +29,16 @@
#include <linux/i2c.h>
#define MAX_CHIPS 10
+#define STUB_FUNC (I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | \
+ I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | \
+ I2C_FUNC_SMBUS_I2C_BLOCK)
static unsigned short chip_addr[MAX_CHIPS];
module_param_array(chip_addr, ushort, NULL, S_IRUGO);
MODULE_PARM_DESC(chip_addr,
"Chip addresses (up to 10, between 0x03 and 0x77)");
-static unsigned long functionality = ~0UL;
+static unsigned long functionality = STUB_FUNC;
module_param(functionality, ulong, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(functionality, "Override functionality bitfield");
@@ -156,9 +159,7 @@ static s32 stub_xfer(struct i2c_adapter * adap, u16 addr, unsigned short flags,
static u32 stub_func(struct i2c_adapter *adapter)
{
- return (I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
- I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
- I2C_FUNC_SMBUS_I2C_BLOCK) & functionality;
+ return STUB_FUNC & functionality;
}
static const struct i2c_algorithm smbus_algorithm = {