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Date: Fri, 9 Oct 2015 12:26:46 +0100 From: Ian Abbott <abbotti@....co.uk> To: driverdev-devel@...uxdriverproject.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Ian Abbott <abbotti@....co.uk>, H Hartley Sweeten <hsweeten@...ionengravers.com>, linux-kernel@...r.kernel.org Subject: [PATCH 0/6] staging: comedi: fix some minor issues with file poll op 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(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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