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| author |   Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> | 2016-08-16 23:26:43 +0300 |
|---|---|---|
| committer |   Philipp Zabel <p.zabel@pengutronix.de> | 2016-09-19 08:06:41 +0200 |
| commit | 9f04a1f2b389a656486c1f9f918a3305569fba6a (patch) | |
| tree | 13f07bdac6e6cefc9c2f8bd8ad4961cb611b4d0a /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | Linux 4.8-rc2 (diff) | |
| download | wireguard-linux-9f04a1f2b389a656486c1f9f918a3305569fba6a.tar.xz wireguard-linux-9f04a1f2b389a656486c1f9f918a3305569fba6a.zip | |
drm: dw_hdmi: use of_get_i2c_adapter_by_node interface
This change is needed to properly lock I2C bus driver, which serves
DDC.
The change fixes an overflow over zero of I2C bus driver user counter:
root@imx6q:~# lsmod
Not tainted
dw_hdmi_ahb_audio 4082 0 - Live 0xbf02c000
dw_hdmi_imx 3498 0 - Live 0xbf00d000
dw_hdmi 16398 2 dw_hdmi_ahb_audio,dw_hdmi_imx, Live 0xbf004000
i2c_imx 16687 0 - Live 0xbf017000
root@imx6q:~# rmmod dw_hdmi_imx
root@imx6q:~# lsmod
Not tainted
dw_hdmi_ahb_audio 4082 0 - Live 0xbf02c000
dw_hdmi 16398 1 dw_hdmi_ahb_audio, Live 0xbf004000
i2c_imx 16687 -1 - Live 0xbf017000
^^
root@imx6q:~# rmmod i2c_imx
rmmod: ERROR: Module i2c_imx is in use
Note that prior to this change put_device() coupled with
of_find_i2c_adapter_by_node() was missing on error path of
dw_hdmi_bind(), added i2c_put_adapter() there along with the change.
Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions