iio: proximity: isl29501: Fix return type of isl29501_register_writegrafted

isl29501_register_write() was returning a u32 instead of an int.
Since the function returns negative error codes (such as -ERANGE or
return values from i2c_smbus_write_byte_data()), returning an unsigned
integer type prevents callers from correctly checking for negative error
conditions.

Fix this by changing the function return type from u32 to int.

This was found through manual code review.

Fixes: 1c28799257bc ("iio: light: isl29501: Add support for the ISL29501 ToF sensor.")
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Reviewed-by: Joshua Crofts <joshua.crofts1@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/Documentation/process/development-process.rst b/Documentation/process/development-process.rst
new file mode 100644
index 000000000..e34d7da58
--- /dev/null
+++ b/Documentation/process/development-process.rst
@@ -0,0 +1,27 @@
+.. _development_process_main:
+
+A guide to the Kernel Development Process
+=========================================
+
+The purpose of this document is to help developers (and their managers)
+work with the development community with a minimum of frustration.  It is
+an attempt to document how this community works in a way which is
+accessible to those who are not intimately familiar with Linux kernel
+development (or, indeed, free software development in general).  While
+there is some technical material here, this is very much a process-oriented
+discussion which does not require a deep knowledge of kernel programming to
+understand.
+
+.. toctree::
+   :caption: Contents
+   :numbered:
+   :maxdepth: 2
+
+   1.Intro
+   2.Process
+   3.Early-stage
+   4.Coding
+   5.Posting
+   6.Followthrough
+   7.AdvancedTopics
+   8.Conclusion