From f37b2bb6ac3e6ebf855d9d4f05cc6932a8e5b463 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Mon, 23 Jul 2018 22:26:08 +0200 Subject: i2c: omap: use core to detect 'no zero length' quirk And don't reimplement in the driver. Signed-off-by: Wolfram Sang Reviewed-by: Grygorii Strashko Acked-by: Tony Lindgren Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-omap.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers/i2c') diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index 65d06a819307..b1086bfb0465 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -661,9 +661,6 @@ static int omap_i2c_xfer_msg(struct i2c_adapter *adap, dev_dbg(omap->dev, "addr: 0x%04x, len: %d, flags: 0x%x, stop: %d\n", msg->addr, msg->len, msg->flags, stop); - if (msg->len == 0) - return -EINVAL; - omap->receiver = !!(msg->flags & I2C_M_RD); omap_i2c_resize_fifo(omap, msg->len, omap->receiver); @@ -1179,6 +1176,10 @@ static const struct i2c_algorithm omap_i2c_algo = { .functionality = omap_i2c_func, }; +static const struct i2c_adapter_quirks omap_i2c_quirks = { + .flags = I2C_AQ_NO_ZERO_LEN, +}; + #ifdef CONFIG_OF static struct omap_i2c_bus_platform_data omap2420_pdata = { .rev = OMAP_I2C_IP_VERSION_1, @@ -1453,6 +1454,7 @@ omap_i2c_probe(struct platform_device *pdev) adap->class = I2C_CLASS_DEPRECATED; strlcpy(adap->name, "OMAP I2C adapter", sizeof(adap->name)); adap->algo = &omap_i2c_algo; + adap->quirks = &omap_i2c_quirks; adap->dev.parent = &pdev->dev; adap->dev.of_node = pdev->dev.of_node; adap->bus_recovery_info = &omap_i2c_bus_recovery_info; -- cgit v1.2.3