diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0775-spidev-Completely-disable-the-DT-warning.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0775-spidev-Completely-disable-the-DT-warning.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0775-spidev-Completely-disable-the-DT-warning.patch b/target/linux/brcm2708/patches-4.19/950-0775-spidev-Completely-disable-the-DT-warning.patch new file mode 100644 index 0000000000..c320527625 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0775-spidev-Completely-disable-the-DT-warning.patch @@ -0,0 +1,32 @@ +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 +@@ -728,6 +728,7 @@ static int spidev_probe(struct spi_devic + * 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); |