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Date: Sat, 14 Jul 2018 16:02:51 +0200
From: Lars-Peter Clausen <lars@...afoo.de>
To: Peter Rosin <peda@...ntia.se>,
Mircea Caprioru <mircea.caprioru@...log.com>
Cc: davem@...emloft.net, mchehab+samsung@...nel.org,
akpm@...ux-foundation.org, rdunlap@...radead.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] mux:adgs1408/1409: New driver for Analog Devices ADGS1408/1409 mux …
On 07/14/2018 02:04 PM, Peter Rosin wrote:
[...]
>> +static int adgs140x_spi_reg_write(struct spi_device *spi,
>> + u8 reg_addr, u8 reg_data)
>> +{
>> + u8 tx_buf[2];
>> +
>> + tx_buf[0] = reg_addr;
>> + tx_buf[1] = reg_data;
>> +
>> + return spi_write_then_read(spi, tx_buf, sizeof(tx_buf), NULL, 0);
>
> return spi_write(spi, tx_buf, sizeof(tx_buf));
Be aware spi_write_then_read() can handle on stack buffers, spi_write() can't.
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