This is a note to let you know that I've just added the patch titled spi: uapi: spidev: add missing ioctl header to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: spi-uapi-spidev-add-missing-ioctl-header.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From a2b4a79b88b24c49d98d45a06a014ffd22ada1a4 Mon Sep 17 00:00:00 2001 From: Baruch Siach <baruch@xxxxxxxxxx> Date: Sun, 10 Sep 2017 20:29:45 +0300 Subject: spi: uapi: spidev: add missing ioctl header From: Baruch Siach <baruch@xxxxxxxxxx> commit a2b4a79b88b24c49d98d45a06a014ffd22ada1a4 upstream. The SPI_IOC_MESSAGE() macro references _IOC_SIZEBITS. Add linux/ioctl.h to make sure this macro is defined. This fixes the following build failure of lcdproc with the musl libc: In file included from .../sysroot/usr/include/sys/ioctl.h:7:0, from hd44780-spi.c:31: hd44780-spi.c: In function 'spi_transfer': hd44780-spi.c:89:24: error: '_IOC_SIZEBITS' undeclared (first use in this function) status = ioctl(p->fd, SPI_IOC_MESSAGE(1), &xfer); ^ Signed-off-by: Baruch Siach <baruch@xxxxxxxxxx> Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- include/uapi/linux/spi/spidev.h | 1 + 1 file changed, 1 insertion(+) --- a/include/uapi/linux/spi/spidev.h +++ b/include/uapi/linux/spi/spidev.h @@ -23,6 +23,7 @@ #define SPIDEV_H #include <linux/types.h> +#include <linux/ioctl.h> /* User space versions of kernel symbols for SPI clocking modes, * matching <linux/spi/spi.h> Patches currently in stable-queue which might be from baruch@xxxxxxxxxx are queue-4.9/spi-uapi-spidev-add-missing-ioctl-header.patch