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7708065f5d
When reaching the end of stream, V4L2 m2m clients may expect the V4L2_EOS_EVENT. Although the V4L2_EOS_EVENT is deprecated behavior, drivers must signal that event before dequeuing the buffer that has the V4L2_BUF_FLAG_LAST flag set. If a driver queues the V4L2_EOS_EVENT event and returns the buffer after the check for events but before the check for buffers, vb2_m2m_poll() will signal that the buffer with V4L2_BUF_FLAG_LAST can be read but not that the V4L2_EOS_EVENT is available. Split the check for buffers into a separate function and check for available buffers before checking for events. This ensures that if vb2_m2m_poll() signals POLLIN | POLLRDNORM for the V4L2_BUF_FLAG_LAST buffer, it signals POLLPRI for the V4L2_EOS_EVENT, too. Signed-off-by: Michael Tretter <m.tretter@pengutronix.de> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> [hverkuil-cisco@xs4all.nl: fix checkpatch alignment warning] Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> |
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| .. | ||
| cec | ||
| common | ||
| dvb-core | ||
| dvb-frontends | ||
| firewire | ||
| i2c | ||
| mc | ||
| mmc | ||
| pci | ||
| platform | ||
| radio | ||
| rc | ||
| spi | ||
| tuners | ||
| usb | ||
| v4l2-core | ||
| Kconfig | ||
| Makefile | ||