brcm2708: update to latest patches from RPi foundation

[openwrt/staging/chunkeey.git] / target / linux / brcm2708 / patches-4.19 / 950-0775-spidev-Completely-disable-the-DT-warning.patch

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 (file)
index 0000000..c320527
--- /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);