diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2018-09-11 21:59:08 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2019-10-23 17:23:44 +0200 |
| commit | 1832f2d8ff69138aa70d3cb3b4ea3c2058e73aea (patch) | |
| tree | 30b09f4bffa551b8d387395e13e563972e904257 /drivers/staging/android | |
| parent | 407e9ef72476e64937ebec44cc835e03a25fb408 (diff) | |
compat_ioctl: move more drivers to compat_ptr_ioctl
The .ioctl and .compat_ioctl file operations have the same prototype so
they can both point to the same function, which works great almost all
the time when all the commands are compatible.
One exception is the s390 architecture, where a compat pointer is only
31 bit wide, and converting it into a 64-bit pointer requires calling
compat_ptr(). Most drivers here will never run in s390, but since we now
have a generic helper for it, it's easy enough to use it consistently.
I double-checked all these drivers to ensure that all ioctl arguments
are used as pointers or are ignored, but are not interpreted as integer
values.
Acked-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: David Sterba <dsterba@suse.com>
Acked-by: Darren Hart (VMware) <dvhart@infradead.org>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/staging/android')
| -rw-r--r-- | drivers/staging/android/ion/ion.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c index e6b1ca141b93..c394686a8e7d 100644 --- a/drivers/staging/android/ion/ion.c +++ b/drivers/staging/android/ion/ion.c @@ -533,9 +533,7 @@ static long ion_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) static const struct file_operations ion_fops = { .owner = THIS_MODULE, .unlocked_ioctl = ion_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = ion_ioctl, -#endif + .compat_ioctl = compat_ptr_ioctl, }; static int debug_shrink_set(void *data, u64 val) |