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Commit c5aa6928 authored by Jean Delvare's avatar Jean Delvare
Browse files

i2c-stub: Expose the default functionality flags 



It is easier to adjust the flags when you know their default value.

Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
Cc: Mark M. Hoffman <mhoffman@lightlink.com>
parent e624dbd3

drivers/i2c/busses/i2c-stub.c

+5 −4
Original line number Diff line number Diff line
@@ -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 = {