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Documentation: i2c: rename variable "register" to "reg" 

The example code provided with the i2c device interface documentation
won't compile since it uses the reserved word "register" to name a
variable.

The compiler fails with this error message:

 error: expected identifier or '(' before '=' token
   __u8 register = 0x20; /* Device register to access */
                 ^

Rename the variable "register" to simply "reg" in the example code.

Another couple of typos has been fixed as well.
[Change "! =" to "!=".]

Signed-off-by: Jose Alarcon Roldan <jose.alarcon.roldan@gmail.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jose Manuel Alarcon Roldan 2014-09-07 11:25:00 -07:00 committed by Linus Torvalds
parent 77be4daf4e
commit 257d6ef4aa
1 changed files with 5 additions and 5 deletions
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10
Documentation/i2c/dev-interface
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@ -57,12 +57,12 @@ Well, you are all set up now. You can now use SMBus commands or plain
I2C to communicate with your device. SMBus commands are preferred if I2C to communicate with your device. SMBus commands are preferred if
the device supports them. Both are illustrated below. the device supports them. Both are illustrated below.
__u8 register = 0x10; /* Device register to access */ __u8 reg = 0x10; /* Device register to access */
__s32 res; __s32 res;
char buf[10]; char buf[10];
/* Using SMBus commands */ /* Using SMBus commands */
res = i2c_smbus_read_word_data(file, register); res = i2c_smbus_read_word_data(file, reg);
if (res < 0) { if (res < 0) {
/* ERROR HANDLING: i2c transaction failed */ /* ERROR HANDLING: i2c transaction failed */
} else { } else {
@ -70,11 +70,11 @@ the device supports them. Both are illustrated below.
} }
/* Using I2C Write, equivalent of /* Using I2C Write, equivalent of
i2c_smbus_write_word_data(file, register, 0x6543) */ i2c_smbus_write_word_data(file, reg, 0x6543) */
buf[0] = register; buf[0] = reg;
buf[1] = 0x43; buf[1] = 0x43;
buf[2] = 0x65; buf[2] = 0x65;
if (write(file, buf, 3) ! =3) { if (write(file, buf, 3) != 3) {
/* ERROR HANDLING: i2c transaction failed */ /* ERROR HANDLING: i2c transaction failed */
} }