From 7d48ec3698e7b747efa744fd340b0f2d1dbfd3e0 Mon Sep 17 00:00:00 2001 From: Bernhard Walle Date: Thu, 3 Feb 2011 09:37:18 +0100 Subject: spi/spidev: Add 32 bit compat ioctl() Add the compat_ioctl for operations on /dev/spi* so that 32 bit userspace applications can access SPI. As far as I can see all data structure are already prepared for that, so no additional conversion has to be done. My use case is MIPS with N32 userspace ABI and toolchain, and that was also the platform where I tested it successfully (Cavium Octeon). Signed-off-by: Bernhard Walle Reviewed-by: Arnd Bergmann Signed-off-by: Grant Likely --- drivers/spi/spidev.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers/spi/spidev.c') diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c index 603428213d21..d9fd86211365 100644 --- a/drivers/spi/spidev.c +++ b/drivers/spi/spidev.c @@ -30,6 +30,7 @@ #include #include #include +#include #include #include @@ -471,6 +472,16 @@ spidev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) return retval; } +#ifdef CONFIG_COMPAT +static long +spidev_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) +{ + return spidev_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); +} +#else +#define spidev_compat_ioctl NULL +#endif /* CONFIG_COMPAT */ + static int spidev_open(struct inode *inode, struct file *filp) { struct spidev_data *spidev; @@ -543,6 +554,7 @@ static const struct file_operations spidev_fops = { .write = spidev_write, .read = spidev_read, .unlocked_ioctl = spidev_ioctl, + .compat_ioctl = spidev_compat_ioctl, .open = spidev_open, .release = spidev_release, .llseek = no_llseek, -- cgit v1.2.3