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From: Dariusz Marcinkiewicz <>
Cc: Dariusz Marcinkiewicz <>
Subject: [PATCH v2 0/5] cec: convert remaining drivers to the new notifier API
Date: Mon,  1 Jul 2019 16:59:39 +0200	[thread overview]
Message-ID: <> (raw)

This series updates remaining drivers in DRM to use new CEC notifier API.

Those complement the "cec: improve notifier support, add
connector info" patch series and also replace 2 following patches from
- [PATCHv8 09/13] dw-hdmi: use cec_notifier_conn_(un)register
- [PATCHv9 12/13] tda998x: use cec_notifier_conn_(un)register

None of those changes were not tested on a real hardware.

Changes since v1:
	Those patches delay creation of notifiers until respective
	connectors are constructed. It seems that those patches, for a
	couple of drivers, by adding the delay, introduce a race between
	notifiers' creation and the IRQs handling threads - at least I
	don't see anything obvious in there that would explicitly forbid
	such races to occur. v2 adds a write barrier to make sure IRQ
	threads see the notifier once it is created (replacing the
	WRITE_ONCE I put in v1). The best thing to do here, I believe,
	would be not to have any synchronization and make sure that an IRQ
	only gets enabled after the notifier is created.

Dariusz Marcinkiewicz (5):
  drm: tda998x: use cec_notifier_conn_(un)register
  drm: sti: use cec_notifier_conn_(un)register
  drm: tegra: use cec_notifier_conn_(un)register
  drm: dw-hdmi: use cec_notifier_conn_(un)register
  drm: exynos: exynos_hdmi: use cec_notifier_conn_(un)register

 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 37 +++++++++++++++--------
 drivers/gpu/drm/exynos/exynos_hdmi.c      | 33 ++++++++++++--------
 drivers/gpu/drm/i2c/tda998x_drv.c         | 32 ++++++++++++++------
 drivers/gpu/drm/sti/sti_hdmi.c            | 20 +++++++-----
 drivers/gpu/drm/tegra/output.c            | 18 ++++++-----
 5 files changed, 91 insertions(+), 49 deletions(-)


             reply	other threads:[~2019-07-01 14:59 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-01 14:59 Dariusz Marcinkiewicz [this message]
2019-07-01 14:59 ` [PATCH v2 1/5] drm: tda998x: use cec_notifier_conn_(un)register Dariusz Marcinkiewicz
2019-07-15 10:47   ` Hans Verkuil
2019-07-01 14:59 ` [PATCH v2 2/5] drm: sti: " Dariusz Marcinkiewicz
2019-07-15 10:49   ` Hans Verkuil
2019-07-01 14:59 ` [PATCH v2 3/5] drm: tegra: " Dariusz Marcinkiewicz
2019-07-15 10:51   ` Hans Verkuil
2019-07-01 14:59 ` [PATCH v2 4/5] drm: dw-hdmi: " Dariusz Marcinkiewicz
2019-07-15 10:52   ` Hans Verkuil
2019-07-01 14:59 ` [PATCH v2 5/5] drm: exynos: exynos_hdmi: " Dariusz Marcinkiewicz
2019-07-15 10:53   ` Hans Verkuil
2019-07-15 11:18 ` [PATCH v2 0/5] cec: convert remaining drivers to the new notifier API Hans Verkuil

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