From: Jonathan Cameron <jic23@kernel.org>
To: linux-iio@vger.kernel.org
Cc: lars@metafoo.de, Michael.Hennerich@analog.com,
manuel.stahl@iis.fraunhofer.de,
Jonathan Cameron <jic23@kernel.org>
Subject: [PATCH 13/16] staging:iio:adc:ad799x stop reading from buffer for sysfs accesses
Date: Sun, 27 Nov 2011 13:33:42 +0000 [thread overview]
Message-ID: <1322400825-29400-14-git-send-email-jic23@kernel.org> (raw)
In-Reply-To: <1322400825-29400-1-git-send-email-jic23@kernel.org>
No known use case and makes in kernel interface work more complex.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
---
drivers/staging/iio/adc/ad799x.h | 6 ------
drivers/staging/iio/adc/ad799x_core.c | 3 +--
drivers/staging/iio/adc/ad799x_ring.c | 30 ------------------------------
3 files changed, 1 insertions(+), 38 deletions(-)
diff --git a/drivers/staging/iio/adc/ad799x.h b/drivers/staging/iio/adc/ad799x.h
index eda01d5..356f690 100644
--- a/drivers/staging/iio/adc/ad799x.h
+++ b/drivers/staging/iio/adc/ad799x.h
@@ -124,15 +124,9 @@ struct ad799x_platform_data {
int ad7997_8_set_scan_mode(struct ad799x_state *st, unsigned mask);
#ifdef CONFIG_AD799X_RING_BUFFER
-int ad799x_single_channel_from_ring(struct iio_dev *indio_dev, int channum);
int ad799x_register_ring_funcs_and_init(struct iio_dev *indio_dev);
void ad799x_ring_cleanup(struct iio_dev *indio_dev);
#else /* CONFIG_AD799X_RING_BUFFER */
-int ad799x_single_channel_from_ring(struct iio_dev *indio_dev, int channum)
-{
- return -EINVAL;
-}
-
static inline int
ad799x_register_ring_funcs_and_init(struct iio_dev *indio_dev)
diff --git a/drivers/staging/iio/adc/ad799x_core.c b/drivers/staging/iio/adc/ad799x_core.c
index 5bedb19..815e6b9 100644
--- a/drivers/staging/iio/adc/ad799x_core.c
+++ b/drivers/staging/iio/adc/ad799x_core.c
@@ -151,8 +151,7 @@ static int ad799x_read_raw(struct iio_dev *indio_dev,
case 0:
mutex_lock(&indio_dev->mlock);
if (iio_buffer_enabled(indio_dev))
- ret = ad799x_single_channel_from_ring(indio_dev,
- chan->scan_index);
+ ret = -EBUSY;
else
ret = ad799x_scan_direct(st, chan->scan_index);
mutex_unlock(&indio_dev->mlock);
diff --git a/drivers/staging/iio/adc/ad799x_ring.c b/drivers/staging/iio/adc/ad799x_ring.c
index 5841c3c..5dded9e 100644
--- a/drivers/staging/iio/adc/ad799x_ring.c
+++ b/drivers/staging/iio/adc/ad799x_ring.c
@@ -23,36 +23,6 @@
#include "ad799x.h"
-int ad799x_single_channel_from_ring(struct iio_dev *indio_dev, int channum)
-{
- struct iio_buffer *ring = indio_dev->buffer;
- int count = 0, ret;
- u16 *ring_data;
-
- if (!(test_bit(channum, ring->scan_mask))) {
- ret = -EBUSY;
- goto error_ret;
- }
-
- ring_data = kmalloc(ring->access->get_bytes_per_datum(ring),
- GFP_KERNEL);
- if (ring_data == NULL) {
- ret = -ENOMEM;
- goto error_ret;
- }
- ret = ring->access->read_last(ring, (u8 *) ring_data);
- if (ret)
- goto error_free_ring_data;
- /* Need a count of channels prior to this one */
- count = bitmap_weight(ring->scan_mask, channum);
- ret = be16_to_cpu(ring_data[count]);
-
-error_free_ring_data:
- kfree(ring_data);
-error_ret:
- return ret;
-}
-
/**
* ad799x_ring_preenable() setup the parameters of the ring before enabling
*
--
1.7.7.3
next prev parent reply other threads:[~2011-11-27 13:33 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-27 13:33 [PATCH 00/16] staging:iio: buffer cleanup series Jonathan Cameron
2011-11-27 13:33 ` [PATCH 01/16] staging:iio:buffer drop bpe field Jonathan Cameron
2011-11-27 13:33 ` [PATCH 02/16] staging:iio: remove userspace access to bytes per datum Jonathan Cameron
2011-11-27 13:33 ` [PATCH 03/16] staging:iio:buffer move setup ops from buffer instance to iio_dev Jonathan Cameron
2011-11-27 13:33 ` [PATCH 04/16] staging:iio: scrap scan_count and ensure all drivers use active_scan_mask Jonathan Cameron
2011-11-28 9:45 ` Lars-Peter Clausen
2011-11-28 16:15 ` Lars-Peter Clausen
2011-11-28 21:02 ` Jonathan Cameron
2011-11-28 21:19 ` Lars-Peter Clausen
2011-11-28 21:31 ` Jonathan Cameron
2011-11-27 13:33 ` [PATCH 05/16] staging:iio:buffer remove unused owner field from struct iio_buffer Jonathan Cameron
2011-11-27 13:33 ` [PATCH 06/16] staging:iio:accel:lis3l02dq scrap reading from buffer for sysfs access Jonathan Cameron
2011-11-27 13:33 ` [PATCH 10/16] staging:iio:adc:ad7606 remove buffer access to data from sysfs read Jonathan Cameron
2011-11-27 13:33 ` [PATCH 11/16] staging:iio:adc:ad7993 stop reading from buffer for sysfs raw read Jonathan Cameron
2011-11-27 13:33 ` [PATCH 12/16] staging:iio:adc:ad7887 stop reading from buffer for sysfs access Jonathan Cameron
2011-11-27 13:33 ` Jonathan Cameron [this message]
2011-11-27 13:33 ` [PATCH 14/16] staging:iio:adc:max1363 " Jonathan Cameron
2011-11-27 13:33 ` [PATCH 15/16] staging:iio:ring_sw don't provide read last function Jonathan Cameron
2011-11-27 13:33 ` [PATCH 16/16] staging:iio:buffer stop allowing for read_last callback Jonathan Cameron
2011-12-04 21:44 ` [PATCH 00/16] staging:iio: buffer cleanup series Lars-Peter Clausen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1322400825-29400-14-git-send-email-jic23@kernel.org \
--to=jic23@kernel.org \
--cc=Michael.Hennerich@analog.com \
--cc=lars@metafoo.de \
--cc=linux-iio@vger.kernel.org \
--cc=manuel.stahl@iis.fraunhofer.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).