On Sun, 7 Oct 2012, walter harms wrote:
Am 07.10.2012 17:38, schrieb Julia Lawall:From: Julia Lawall <Julia.Lawall@xxxxxxx> Introduce use of I2c_MSG_READ/WRITE/OP, for readability. In the second i2c_msg structure, a length expressed as an explicit constant is also re-expressed as the size of the buffer, reg. A simplified version of the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression a,b,c; identifier x; @@ struct i2c_msg x = - {.addr = a, .buf = b, .len = c, .flags = I2C_M_RD} + I2C_MSG_READ(a,b,c) ; @@ expression a,b,c; identifier x; @@ struct i2c_msg x = - {.addr = a, .buf = b, .len = c, .flags = 0} + I2C_MSG_WRITE(a,b,c) ; @@ expression a,b,c,d; identifier x; @@ struct i2c_msg x = - {.addr = a, .buf = b, .len = c, .flags = d} + I2C_MSG_OP(a,b,c,d) ; // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@xxxxxxx> --- drivers/media/tuners/e4000.c | 20 +++----------------- 1 file changed, 3 insertions(+), 17 deletions(-) diff --git a/drivers/media/tuners/e4000.c b/drivers/media/tuners/e4000.c index 1b33ed3..8f182fc 100644 --- a/drivers/media/tuners/e4000.c +++ b/drivers/media/tuners/e4000.c @@ -26,12 +26,7 @@ static int e4000_wr_regs(struct e4000_priv *priv, u8 reg, u8 *val, int len) int ret; u8 buf[1 + len]; struct i2c_msg msg[1] = { - { - .addr = priv->cfg->i2c_addr, - .flags = 0, - .len = sizeof(buf), - .buf = buf, - } + I2C_MSG_WRITE(priv->cfg->i2c_addr, buf, sizeof(buf)) };Any reason why struct i2c_msg is an array ?
I assumed that it looked more harmonious with the other uses of i2c_transfer, which takes as arguments an array and the number of elements.
But there are some files that instead use i2c_transfer(priv->i2c, &msg, 1).I can change them all to do that if that is preferred. But maybe I will wait a little bit to see if there are other issues to address at the same time.
thanks, julia
re, whbuf[0] = reg; @@ -54,17 +49,8 @@ static int e4000_rd_regs(struct e4000_priv *priv, u8 reg, u8 *val, int len) int ret; u8 buf[len]; struct i2c_msg msg[2] = { - { - .addr = priv->cfg->i2c_addr, - .flags = 0, - .len = 1, - .buf = ®, - }, { - .addr = priv->cfg->i2c_addr, - .flags = I2C_M_RD, - .len = sizeof(buf), - .buf = buf, - } + I2C_MSG_WRITE(priv->cfg->i2c_addr, ®, sizeof(reg)), + I2C_MSG_READ(priv->cfg->i2c_addr, buf, sizeof(buf)) }; ret = i2c_transfer(priv->i2c, msg, 2); -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html-- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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