From 2a07616cd9d5482c8388b8c4762b51f7ec02ba42 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Wed, 22 Oct 2014 15:37:11 -0700 Subject: [PATCH] staging: comedi: amplc_dio200_common: use comedi_buf_write_samples() The dev->read_subdev used in this driver for async commands returns the full scan with each sample so it should have the SDF_PACKED subdev_flag set. Add the missing subdev_flags and use comedi_buf_write_samples() to add the sample to the async buffer. The async events will set properly by the core. A dev_warn() message will also be output by the core if the buffer overflows. Remove the unnecessary events and dev_err() message in the driver. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/amplc_dio200_common.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/drivers/staging/comedi/drivers/amplc_dio200_common.c b/drivers/staging/comedi/drivers/amplc_dio200_common.c index 944d454b7a37..c306226790bf 100644 --- a/drivers/staging/comedi/drivers/amplc_dio200_common.c +++ b/drivers/staging/comedi/drivers/amplc_dio200_common.c @@ -267,14 +267,8 @@ static void dio200_read_scan_intr(struct comedi_device *dev, if (triggered & (1U << ch)) val |= (1U << n); } - /* Write the scan to the buffer. */ - if (comedi_buf_put(s, val)) { - s->async->events |= (COMEDI_CB_BLOCK | COMEDI_CB_EOS); - } else { - /* Error! Stop acquisition. */ - s->async->events |= COMEDI_CB_ERROR | COMEDI_CB_OVERFLOW; - dev_err(dev->class_dev, "buffer overflow\n"); - } + + comedi_buf_write_samples(s, &val, 1); /* Check for end of acquisition. */ if (cmd->stop_src == TRIG_COUNT) { @@ -463,7 +457,7 @@ static int dio200_subdev_intr_init(struct comedi_device *dev, dio200_write8(dev, subpriv->ofs, 0); s->type = COMEDI_SUBD_DI; - s->subdev_flags = SDF_READABLE | SDF_CMD_READ; + s->subdev_flags = SDF_READABLE | SDF_CMD_READ | SDF_PACKED; if (board->has_int_sce) { s->n_chan = DIO200_MAX_ISNS; s->len_chanlist = DIO200_MAX_ISNS; -- 2.34.1