2019-12-23 16:25:19 +00:00
|
|
|
From ce0e4cf60033eb7e15266b329183f945f2a82c61 Mon Sep 17 00:00:00 2001
|
|
|
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
|
|
|
Date: Mon, 2 Dec 2019 10:28:44 +0000
|
|
|
|
|
Subject: [PATCH] spidev: Completely disable the DT warning
|
|
|
|
|
|
|
|
|
|
The upstream SPI and DT maintainers are completely opposed to declaring
|
|
|
|
|
in Device Tree that an SPI CS line is to be managed by the spidev
|
|
|
|
|
driver, even though the facility is useful on a hobbyist device like a
|
|
|
|
|
Raspberry Pi where arbitrary devices can be attached, and the
|
|
|
|
|
alternative to DT declaration (spi_board_info) has been almost entirely
|
|
|
|
|
rendered obsolete by DT.
|
|
|
|
|
|
|
|
|
|
Continue to override their objections by disabling the warning.
|
|
|
|
|
|
|
|
|
|
See: https://github.com/raspberrypi/linux/issues/3361
|
|
|
|
|
https://github.com/raspberrypi/linux/issues/1054
|
|
|
|
|
|
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
|
|
|
|
---
|
|
|
|
|
drivers/spi/spidev.c | 1 +
|
|
|
|
|
1 file changed, 1 insertion(+)
|
|
|
|
|
|
|
|
|
|
--- a/drivers/spi/spidev.c
|
|
|
|
|
+++ b/drivers/spi/spidev.c
|
2020-01-04 22:45:20 +00:00
|
|
|
@@ -728,6 +728,7 @@ static int spidev_probe(struct spi_devic
|
2019-12-23 16:25:19 +00:00
|
|
|
* compatible string, it is a Linux implementation thing
|
|
|
|
|
* rather than a description of the hardware.
|
|
|
|
|
*/
|
|
|
|
|
+ if (0) /* Disable the warning - this feature is too useful */
|
|
|
|
|
WARN(spi->dev.of_node &&
|
|
|
|
|
of_device_is_compatible(spi->dev.of_node, "spidev"),
|
|
|
|
|
"%pOF: buggy DT: spidev listed directly in DT\n", spi->dev.of_node);
|
