On Wed, Jan 15, 2020 at 4:53 PM Filip Bozuta <filip.boz...@rt-rk.com> wrote: > > This patch implements functionality of following ioctl: > > SNDRV_TIMER_IOCTL_TREAD - Setting enhanced time read > > Sets enhanced time read which is used for reading time with timestamps > and events. The third ioctl's argument is a pointer to an 'int'. Enhanced > reading is set if the third argument is different than 0, otherwise normal > time reading is set. > > Implementation notes: > > Because the implemented ioctl has 'int' as its third argument, the > implementation was straightforward. > > Signed-off-by: Filip Bozuta <filip.boz...@rt-rk.com>
I think this one is wrong when you go between 32-bit and 64-bit targets, and it gets worse with the kernel patches that just got merged for linux-5.5, which extends the behavior to deal with 64-bit time_t on 32-bit architectures. Please have a look at https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/log/?h=80fe7430c70859 Arnd
