From mboxrd@z Thu Jan 1 00:00:00 1970 From: Felipe Balbi Subject: [PATCH 7/8] i2c: add 'transferred' field to struct i2c_msg Date: Mon, 22 Oct 2012 12:46:57 +0300 Message-ID: <1350899218-13624-8-git-send-email-balbi@ti.com> References: <1350899218-13624-1-git-send-email-balbi@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1350899218-13624-1-git-send-email-balbi-l0cyMroinI0@public.gmane.org> Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Linux OMAP Mailing List , Tony Lindgren , Benoit Cousson , Linux ARM Kernel Mailing List , w.sang-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org, ben-linux-elnMNo+KYs3YtjvyW6yDsg@public.gmane.org, Shubhrajyoti Datta , Santosh Shilimkar , Felipe Balbi List-Id: linux-i2c@vger.kernel.org From: Shubhrajyoti D 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 Signed-off-by: Felipe Balbi --- include/uapi/linux/i2c.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/i2c.h b/include/uapi/linux/i2c.h index 0e949cb..4b35c9b 100644 --- a/include/uapi/linux/i2c.h +++ b/include/uapi/linux/i2c.h @@ -77,6 +77,7 @@ 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 transferred; /* actual bytes transferred */ __u8 *buf; /* pointer to msg data */ }; -- 1.8.0.rc0