linux/drivers/media
Ezequiel Garcia 2b4116290c media: coda: Clear the interrupt reason
This commit clears the interrupt reason (INT_REASON) register
on the interrupt handler. Without this clearing, the CODA hardware
has been observed to get completely stalled on CODA980 variants,
requiring a pretty deep hardware reset.

The datasheet specifies that the INT_REASON register is set
by the CODA hardware, and should be cleared by the host.

While the CODA versions that are currently supported by this driver
don't seem to need this change, it's a really small change,
so it seems a wise thing to do to avoid hitting some
rare race-condition in the hardware.

Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-05-28 12:23:15 -04:00
..
cec Linux 5.2-rc2 2019-05-28 11:21:51 -04:00
common Linux 5.2-rc2 2019-05-28 11:21:51 -04:00
dvb-core Linux 5.2-rc2 2019-05-28 11:21:51 -04:00
dvb-frontends Linux 5.2-rc2 2019-05-28 11:21:51 -04:00
firewire treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
i2c Linux 5.2-rc2 2019-05-28 11:21:51 -04:00
mc media: move drivers/media/media-* to drivers/media/mc/mc-* 2019-05-28 12:15:46 -04:00
mmc treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
pci Linux 5.2-rc2 2019-05-28 11:21:51 -04:00
platform media: coda: Clear the interrupt reason 2019-05-28 12:23:15 -04:00
radio Linux 5.2-rc2 2019-05-28 11:21:51 -04:00
rc Linux 5.2-rc2 2019-05-28 11:21:51 -04:00
spi Linux 5.2-rc2 2019-05-28 11:21:51 -04:00
tuners Linux 5.2-rc2 2019-05-28 11:21:51 -04:00
usb media: pvrusb2: use a different format for warnings 2019-05-28 12:19:30 -04:00
v4l2-core Linux 5.2-rc2 2019-05-28 11:21:51 -04:00
Kconfig media: move drivers/media/media-* to drivers/media/mc/mc-* 2019-05-28 12:15:46 -04:00
Makefile media: move drivers/media/media-* to drivers/media/mc/mc-* 2019-05-28 12:15:46 -04:00