[RFC PATCH 1/3] i2c: add 'actual' field to struct i2c_msg
From: Jean Delvare <hidden>
Date: 2012-07-02 13:27:10
Also in:
linux-i2c, linux-omap
On Fri, 29 Jun 2012 16:35:25 +0530, Shubhrajyoti D wrote:
quoted hunk ↗ jump to hunk
In case of a NACK, it's wise to tell our clients drivers about how many bytes were actually transferred. Support this by adding an extra field to the struct i2c_msg which gets incremented the amount of bytes actually transferred. Signed-off-by: Shubhrajyoti D <redacted> Signed-off-by: Felipe Balbi <redacted> --- include/linux/i2c.h | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)diff --git a/include/linux/i2c.h b/include/linux/i2c.h index ddfa041..0cb6b83 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h@@ -547,6 +547,7 @@ struct i2c_msg { #define I2C_M_NO_RD_ACK 0x0800 /* if I2C_FUNC_PROTOCOL_MANGLING */ #define I2C_M_RECV_LEN 0x0400 /* length will be first received byte */ __u16 len; /* msg length */ + __u16 actual; /* actual bytes transferred */ __u8 *buf; /* pointer to msg data */ };
Oh, as a side note: I don't much like the name "actual". It's not really clear what it means. I don't have a perfect name to propose as a replacement, but maybe "transferred" or even just "done" would do. -- Jean Delvare