+ iio-iio_get_new_idr_val-return-negative-value-on-failure.patch added to -mm tree

[akpm@linux-foundation.org]

The patch titled
     iio: iio_get_new_idr_val() return negative value on failure
has been added to the -mm tree.  Its filename is
     iio-iio_get_new_idr_val-return-negative-value-on-failure.patch

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------------------------------------------------------
Subject: iio: iio_get_new_idr_val() return negative value on failure
From: sonic zhang <sonic.adi@gmail.com>

Function iio_get_new_idr_val() returns a negative value if it fails.  So,
only error when ret < 0 in iio_device_register_eventset().

Signed-off-by: Sonic Zhang <sonic.adi@gmail.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/staging/iio/industrialio-core.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff -puN drivers/staging/iio/industrialio-core.c~iio-iio_get_new_idr_val-return-negative-value-on-failure drivers/staging/iio/industrialio-core.c
--- a/drivers/staging/iio/industrialio-core.c~iio-iio_get_new_idr_val-return-negative-value-on-failure
+++ a/drivers/staging/iio/industrialio-core.c
@@ -536,6 +536,7 @@ static void iio_device_unregister_sysfs(
 	sysfs_remove_group(&dev_info->dev.kobj, dev_info->attrs);
 }
 
+/* This function return negative value if fails. */
 int iio_get_new_idr_val(struct idr *this_idr)
 {
 	int ret;
@@ -659,7 +660,7 @@ static int iio_device_register_eventset(
 	for (i = 0; i < dev_info->num_interrupt_lines; i++) {
 		dev_info->event_interfaces[i].owner = dev_info->driver_module;
 		ret = iio_get_new_idr_val(&iio_event_idr);
-		if (ret)
+		if (ret < 0)
 			goto error_free_setup_ev_ints;
 		else
 			dev_info->event_interfaces[i].id = ret;
_

Patches currently in -mm which might be from sonic.adi@gmail.com are

iio-iio_get_new_idr_val-return-negative-value-on-failure.patch
iio-iio_get_new_idr_val-return-negative-value-on-failure-fix.patch