Re: [PATCH stable 4.9 00/21] Unbreak 32-bit DVB applications on 64-bit kernels

On 6/5/2020 9:24 AM, Florian Fainelli wrote:

Hi all,

This long patch series was motivated by backporting Jaedon's changes
which add a proper ioctl compatibility layer for 32-bit applications
running on 64-bit kernels. We have a number of Android TV-based products
currently running on the 4.9 kernel and this was broken for them.

Thanks to Robert McConnell for identifying and providing the patches in
their initial format.

In order for Jaedon's patches to apply cleanly a number of changes were
applied to support those changes. If you deem the patch series too big
please let me know.

Mauro, can you review this? I would prefer not to maintain those patches
in our downstream 4.9 kernel as there are quite a few of them, and this
is likely beneficial to other people.

Thank you!

Thanks

Colin Ian King (2):
  media: dvb_frontend: ensure that inital front end status initialized
  media: dvb_frontend: initialize variable s with FE_NONE instead of 0

Jaedon Shin (3):
  media: dvb_frontend: Add unlocked_ioctl in dvb_frontend.c
  media: dvb_frontend: Add compat_ioctl callback
  media: dvb_frontend: Add commands implementation for compat ioct

Katsuhiro Suzuki (1):
  media: dvb_frontend: fix wrong cast in compat_ioctl

Mauro Carvalho Chehab (14):
  media: dvb/frontend.h: move out a private internal structure
  media: dvb/frontend.h: document the uAPI file
  media: dvb_frontend: get rid of get_property() callback
  media: stv0288: get rid of set_property boilerplate
  media: stv6110: get rid of a srate dead code
  media: friio-fe: get rid of set_property()
  media: dvb_frontend: get rid of set_property() callback
  media: dvb_frontend: cleanup dvb_frontend_ioctl_properties()
  media: dvb_frontend: cleanup ioctl handling logic
  media: dvb_frontend: get rid of property cache's state
  media: dvb_frontend: better document the -EPERM condition
  media: dvb_frontend: fix return values for FE_SET_PROPERTY
  media: dvb_frontend: be sure to init dvb_frontend_handle_ioctl()
    return code
  media: dvb_frontend: fix return error code

Satendra Singh Thakur (1):
  media: dvb_frontend: dtv_property_process_set() cleanups

 .../media/uapi/dvb/fe-get-property.rst        |   7 +-
 drivers/media/dvb-core/dvb_frontend.c         | 571 +++++++++++------
 drivers/media/dvb-core/dvb_frontend.h         |  13 -
 drivers/media/dvb-frontends/lg2160.c          |  14 -
 drivers/media/dvb-frontends/stv0288.c         |   7 -
 drivers/media/dvb-frontends/stv6110.c         |   9 -
 drivers/media/usb/dvb-usb/friio-fe.c          |  24 -
 fs/compat_ioctl.c                             |  17 -
 include/uapi/linux/dvb/frontend.h             | 592 +++++++++++++++---
 9 files changed, 881 insertions(+), 373 deletions(-)

-- 
Florian