From c77b975e2bc4254d37d1a7caf167e72b101cfb37 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Tue, 4 Sep 2012 10:40:44 +0200 Subject: [PATCH] hwmon: (lm70) Allow 4wire SPI bus with LM70 Removing the 3wire limitation on LM70 as the component also allows operation on 4wire SPI bus Signed-off-by: Christophe Leroy Signed-off-by: Guenter Roeck --- Documentation/hwmon/lm70 | 5 ++--- drivers/hwmon/lm70.c | 4 ---- 2 files changed, 2 insertions(+), 7 deletions(-) diff --git a/Documentation/hwmon/lm70 b/Documentation/hwmon/lm70 index 0d240291e3cc..1bb1f20951ca 100644 --- a/Documentation/hwmon/lm70 +++ b/Documentation/hwmon/lm70 @@ -31,9 +31,8 @@ As a real (in-tree) example of this "SPI protocol driver" interfacing with a "SPI master controller driver", see drivers/spi/spi_lm70llp.c and its associated documentation. -The TMP121/TMP123 are very similar; main differences are 4 wire SPI inter- -face (read only) and 13-bit temperature data (0.0625 degrees celsius reso- -lution). +The TMP121/TMP123 are very similar; main difference is 13-bit temperature +data (0.0625 degrees celsius resolution). Thanks to --------- diff --git a/drivers/hwmon/lm70.c b/drivers/hwmon/lm70.c index dd7f0cafd197..1da62f616db5 100644 --- a/drivers/hwmon/lm70.c +++ b/drivers/hwmon/lm70.c @@ -143,10 +143,6 @@ static int __devinit lm70_probe(struct spi_device *spi) if (spi->mode & (SPI_CPOL | SPI_CPHA)) return -EINVAL; - /* 3-wire link (shared SI/SO) for LM70 */ - if (chip == LM70_CHIP_LM70 && !(spi->mode & SPI_3WIRE)) - return -EINVAL; - /* NOTE: we assume 8-bit words, and convert to 16 bits manually */ p_lm70 = devm_kzalloc(&spi->dev, sizeof(*p_lm70), GFP_KERNEL); -- 2.39.5