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, 97 insertions, 0 deletions

diff --git a/scripts/ver_linux b/scripts/ver_linux
new file mode 100755
index 000000000..00bdaf30d
--- /dev/null
+++ b/scripts/ver_linux
@@ -0,0 +1,97 @@
+#!/usr/bin/awk -f
+# SPDX-License-Identifier: GPL-2.0
+# Before running this script please ensure that your PATH is
+# typical as you use for compilation/installation. I use
+# /bin /sbin /usr/bin /usr/sbin /usr/local/bin, but it may
+# differ on your system.
+
+BEGIN {
+	usage = "If some fields are empty or look unusual you may have an old version.\n"
+	usage = usage "Compare to the current minimal requirements in Documentation/process/changes.rst\n"
+	print usage
+
+	system("uname -a")
+	printf("\n")
+
+	vernum = "[0-9]+([.]?[0-9]+)+"
+	libc = "libc[.]so[.][0-9]+$"
+	libcpp = "(libg|stdc)[+]+[.]so([.][0-9]+)+$"
+
+	printversion("bash", version("bash --version"))
+	printversion("bc", version("bc --version"))
+	printversion("bindgen", version("bindgen --version"))
+	printversion("binutils", version("ld -v"))
+	printversion("bison", version("bison --version"))
+	printversion("btrfs-progs", version("btrfs --version"))
+	printversion("Clang", version("clang --version"))
+	printversion("Console-tools", version("loadkeys -V"))
+	printversion("Dynamic linker (ldd)", version("ldd --version"))
+	printversion("e2fsprogs", version("e2fsck -V"))
+	printversion("flex", version("flex --version"))
+	printversion("gdb", version("gdb -version"))
+	printversion("GNU awk", version("gawk --version"))
+	printversion("GNU C", version("gcc -dumpversion"))
+	printversion("GNU make", version("make --version"))
+	printversion("GNU tar", version("tar --version"))
+	printversion("GRUB2", version("grub2-install --version"))
+	printversion("GRUB", version("grub-install --version"))
+	printversion("gtags", version("gtags --version"))
+	printversion("iptables", version("iptables -V"))
+	printversion("Isdn4k-utils", version("isdnctrl"))
+	printversion("jfsutils", version("fsck.jfs -V"))
+	printversion("Kbd", version("loadkeys -V"))
+	printversion("kmod", version("kmod -V"))
+
+	while ("ldconfig -p 2>/dev/null" | getline > 0)
+		if ($NF ~ libc || $NF ~ libcpp)
+			if (!seen[ver = version("readlink " $NF)]++)
+				printversion("Linux C" ($NF ~ libcpp? "++" : "") " Library", ver)
+
+	printversion("mcelog", version("mcelog --version"))
+	printversion("mkimage", version("mkimage --version"))
+	printversion("Module-init-tools", version("depmod -V"))
+	printversion("Mount", version("mount --version"))
+	printversion("Net-tools", version("ifconfig --version"))
+	printversion("nfs-utils", version("showmount --version"))
+	printversion("openssl", version("openssl version"))
+	printversion("pahole", version("pahole --version"))
+	printversion("Pcmcia-cs", version("cardmgr -V"))
+	printversion("pcmciautils", version("pccardctl -V"))
+	printversion("PPP", version("pppd --version"))
+	printversion("procps", version("ps --version"))
+	printversion("Python", version("python3 -V"))
+	printversion("quota-tools", version("quota -V"))
+	printversion("Rust", version("rustc --version"))
+	printversion("Sh-utils", version("expr --v"))
+	printversion("Sphinx", version("sphinx-build --version"))
+	printversion("squashfs-tools", version("mksquashfs -version"))
+	printversion("udev", version("udevadm --version"))
+	printversion("util-linux", version("mount --version"))
+	printversion("Wireless-tools", version("iwconfig --version"))
+	printversion("xfsprogs", version("xfs_db -V"))
+
+	while ("sort /proc/modules" | getline > 0) {
+		mods = mods sep $1
+		sep = " "
+	}
+	printversion("Modules Loaded", mods)
+}
+
+function version(cmd,    ver) {
+	cmd = cmd " 2>&1"
+	while (cmd | getline > 0) {
+		if (match($0, vernum)) {
+			ver = substr($0, RSTART, RLENGTH)
+			break
+		}
+	}
+	close(cmd)
+	return ver
+}
+
+function printversion(name, value,  ofmt) {
+	if (value != "") {
+		ofmt = "%-20s\t%s\n"
+		printf(ofmt, name, value)
+	}
+}