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由 Ian Abbott 提交于
For write(), any data copied to the data buffer after the previously set up streaming acquisition command has finished won't be used, but a non-empty write() does not currently return 0 (or -EPIPE on error) after the command has finished until the data buffer has been filled up. Change this behavior to return 0 (or -EPIPE) any time after the command has finished, without bothering to fill up the buffer with more useless data. Signed-off-by: NIan Abbott <abbotti@mev.co.uk> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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