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, 39 insertions, 0 deletions

diff --git a/drivers/interconnect/Kconfig b/drivers/interconnect/Kconfig
new file mode 100644
index 000000000..882dcb0b4
--- /dev/null
+++ b/drivers/interconnect/Kconfig
@@ -0,0 +1,39 @@
+# SPDX-License-Identifier: GPL-2.0-only
+menuconfig INTERCONNECT
+	bool "On-Chip Interconnect management support"
+	help
+	  Support for management of the on-chip interconnects.
+
+	  This framework is designed to provide a generic interface for
+	  managing the interconnects in a SoC.
+
+	  If unsure, say no.
+
+if INTERCONNECT
+
+source "drivers/interconnect/imx/Kconfig"
+source "drivers/interconnect/mediatek/Kconfig"
+source "drivers/interconnect/qcom/Kconfig"
+source "drivers/interconnect/samsung/Kconfig"
+
+config INTERCONNECT_CLK
+	tristate
+	depends on COMMON_CLK
+	help
+	  Support for wrapping clocks into the interconnect nodes.
+
+config INTERCONNECT_KUNIT_TEST
+	tristate "KUnit tests for Interconnect framework"
+	depends on KUNIT
+	default KUNIT_ALL_TESTS
+	help
+	  This builds the KUnit test suite for the generic system interconnect
+	  framework.
+
+	  The tests cover the core functionality of the interconnect subsystem,
+	  including provider/consumer APIs, topology management, and bandwidth
+	  aggregation logic.
+
+	  If unsure, say N.
+
+endif