linux-kernel - [PATCH 3.16 006/204] spi: uapi: spidev: add missing ioctl header

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Message-ID: <lsq.1514480744.53918259@decadent.org.uk>
Date:   Thu, 28 Dec 2017 17:05:44 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Mark Brown" <broonie@...nel.org>,
        "Baruch Siach" <baruch@...s.co.il>
Subject: [PATCH 3.16 006/204] spi: uapi: spidev: add missing ioctl header

3.16.52-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Baruch Siach <baruch@...s.co.il>

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@...s.co.il>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 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>