A few changes for the "poll" file operation to avoid poll-waiting on the same subdevice for both read and write (patch 1), avoid allocating write buffer space unnecessarily and possibly inappropriately (patch 4), consider whether any active commands belong to the current file object (patch 5), and avoid using the main mutex (for performance reasons) (patch 6). 1) staging: comedi: don't poll_wait on same subdevice twice 2) staging: comedi: rename comedi_buf_write_n_available 3) staging: comedi: add new comedi_buf_write_n_available() 4) staging: comedi: don't allocate buffer space when polling for write 5) staging: comedi: check command started by file being polled 6) staging: comedi: don't use mutex when polling file drivers/staging/comedi/comedi_buf.c | 19 +++++++++++++------ drivers/staging/comedi/comedi_fops.c | 17 +++++++++-------- drivers/staging/comedi/comedi_internal.h | 1 + 3 files changed, 23 insertions(+), 14 deletions(-) _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
