From: Peter Meerwald <pmeerw@pmeerw.net>
To: linux-iio@vger.kernel.org
Cc: jic23@kernel.org, Peter Meerwald <pmeerw@pmeerw.net>
Subject: [PATCH 10/12] staging:iio: Fix error handling in generic_buffer example
Date: Sat, 7 Jun 2014 17:42:50 +0200 [thread overview]
Message-ID: <1402155772-1373-11-git-send-email-pmeerw@pmeerw.net> (raw)
In-Reply-To: <1402155772-1373-1-git-send-email-pmeerw@pmeerw.net>
read() does not return -EAGAIN
read() returns -1 and the errno value needs to be checked for -EAGAIN
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
---
drivers/staging/iio/Documentation/generic_buffer.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/iio/Documentation/generic_buffer.c b/drivers/staging/iio/Documentation/generic_buffer.c
index 40d0eca..044ea19 100644
--- a/drivers/staging/iio/Documentation/generic_buffer.c
+++ b/drivers/staging/iio/Documentation/generic_buffer.c
@@ -305,9 +305,12 @@ int main(int argc, char **argv)
read_size = read(fp,
data,
toread*scan_size);
- if (read_size == -EAGAIN) {
- printf("nothing available\n");
- continue;
+ if (read_size < 0) {
+ if (errno == -EAGAIN) {
+ printf("nothing available\n");
+ continue;
+ } else
+ break;
}
for (i = 0; i < read_size/scan_size; i++)
process_scan(data + scan_size*i,
--
1.9.1
next prev parent reply other threads:[~2014-06-07 15:43 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-07 15:42 [PATCH 00/12] misc IIO cleanup Peter Meerwald
2014-06-07 15:42 ` [PATCH 01/12] iio:adc:ad5791: Use BIT() and GENMASK() macros Peter Meerwald
2014-06-09 11:58 ` Lars-Peter Clausen
2014-06-07 15:42 ` [PATCH 02/12] iio:adc:ad5504: " Peter Meerwald
2014-06-07 15:42 ` [PATCH 03/12] iio:adc:ad7887: " Peter Meerwald
2014-06-09 11:59 ` Lars-Peter Clausen
2014-06-07 15:42 ` [PATCH 04/12] iio:adc:ad7476: Use GENMASK() macro Peter Meerwald
2014-06-09 12:00 ` Lars-Peter Clausen
2014-06-07 15:42 ` [PATCH 05/12] iio:adc:ad7298: Use BIT() and GENMASK() macros Peter Meerwald
2014-06-09 12:00 ` Lars-Peter Clausen
2014-06-07 15:42 ` [PATCH 06/12] iio: Move documentation of iio-trig-sysfs to ABI Peter Meerwald
2014-06-09 19:58 ` Jonathan Cameron
2014-06-07 15:42 ` [PATCH 07/12] staging:iio: Update iio_event_monitor program Peter Meerwald
2014-06-07 15:42 ` [PATCH 08/12] staging:iio: Fix iio_utils.h function prototypes Peter Meerwald
2014-06-07 15:42 ` [PATCH 09/12] staging:iio: Fix mention of INDIO_RING_TRIGGERED to INDIO_BUFFER_TRIGGERED Peter Meerwald
2014-06-07 15:42 ` Peter Meerwald [this message]
2014-06-07 15:42 ` [PATCH 11/12] staging:iio-trig-periodic-rtc: Cleanup Peter Meerwald
2014-06-09 20:02 ` Jonathan Cameron
2014-06-09 20:04 ` Peter Meerwald
2014-06-09 20:14 ` Jonathan Cameron
2014-06-07 15:42 ` [PATCH 12/12] staging:iio-trig-periodic-rtc: Allow to reset frequency to 0 Peter Meerwald
2014-06-09 20:05 ` [PATCH 00/12] misc IIO cleanup Jonathan Cameron
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