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7efd8bc800
USB generic driver We always had to use double buffering when capturing, and when playback data for one URB crosses a buffer boundary. The latter would make hwptr updates less precise because the double-buffered data is read from the buffer much earlier than the other data is read by the host controller. Double-buffering all data allows to update hwptr immediately after the data was copied to the USB buffer(s), which has the additional benefit of avoiding the latency imposed by the host controller's delay of up to one frame when interrupting. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> |
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| .. | ||
| arm | ||
| core | ||
| drivers | ||
| i2c | ||
| isa | ||
| mips | ||
| oss | ||
| parisc | ||
| pci | ||
| pcmcia | ||
| ppc | ||
| sparc | ||
| synth | ||
| usb | ||
| Kconfig | ||
| last.c | ||
| Makefile | ||
| sound_core.c | ||
| sound_firmware.c | ||