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i2c: designware: suppress unneeded SDA hold time warnings

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The hardware may not support SDA hold time configuration, but if it is
not set in the Device Tree either, there is no need to print a warning.

Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Alexander Monakov <amonakov@ispras.ru>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Alexander Monakov 2018-03-08 16:23:53 +03:00 committed by Wolfram Sang
parent 03e73e6349
commit 7a20e707aa
1 changed files with 1 additions and 1 deletions
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2
drivers/i2c/busses/i2c-designware-master.c
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@ -163,7 +163,7 @@ static int i2c_dw_init_master(struct dw_i2c_dev *dev)
if (!(dev->sda_hold_time & DW_IC_SDA_HOLD_RX_MASK))
dev->sda_hold_time |= 1 << DW_IC_SDA_HOLD_RX_SHIFT;
dw_writel(dev, dev->sda_hold_time, DW_IC_SDA_HOLD);
} else {
} else if (dev->sda_hold_time) {
dev_warn(dev->dev,
"Hardware too old to adjust SDA hold time.\n");
}