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, 116 insertions, 0 deletions

diff --git a/include/uapi/rdma/ionic-abi.h b/include/uapi/rdma/ionic-abi.h
new file mode 100644
index 000000000..2c70ac149
--- /dev/null
+++ b/include/uapi/rdma/ionic-abi.h
@@ -0,0 +1,116 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/* Copyright (C) 2018-2025, Advanced Micro Devices, Inc */
+
+#ifndef IONIC_ABI_H
+#define IONIC_ABI_H
+
+#include <linux/types.h>
+
+#define IONIC_ABI_VERSION	1
+
+#define IONIC_EXPDB_64		1
+#define IONIC_EXPDB_128		2
+#define IONIC_EXPDB_256		4
+#define IONIC_EXPDB_512		8
+
+#define IONIC_EXPDB_SQ		1
+#define IONIC_EXPDB_RQ		2
+
+#define IONIC_CMB_ENABLE	1
+#define IONIC_CMB_REQUIRE	2
+#define IONIC_CMB_EXPDB		4
+#define IONIC_CMB_WC		8
+#define IONIC_CMB_UC		16
+
+struct ionic_ctx_req {
+	__u32 rsvd[2];
+};
+
+struct ionic_ctx_resp {
+	__u32 rsvd;
+	__u32 page_shift;
+
+	__aligned_u64 dbell_offset;
+
+	__u16 version;
+	__u8 qp_opcodes;
+	__u8 admin_opcodes;
+
+	__u8 sq_qtype;
+	__u8 rq_qtype;
+	__u8 cq_qtype;
+	__u8 admin_qtype;
+
+	__u8 max_stride;
+	__u8 max_spec;
+	__u8 udma_count;
+	__u8 expdb_mask;
+	__u8 expdb_qtypes;
+
+	__u8 rsvd2[3];
+	__aligned_u64 phc_offset;
+};
+
+struct ionic_qdesc {
+	__aligned_u64 addr;
+	__u32 size;
+	__u16 mask;
+	__u8 depth_log2;
+	__u8 stride_log2;
+};
+
+struct ionic_ah_resp {
+	__u32 ahid;
+	__u32 pad;
+};
+
+struct ionic_cq_req {
+	struct ionic_qdesc cq[2];
+	__u8 udma_mask;
+	__u8 rsvd[7];
+};
+
+struct ionic_cq_resp {
+	__u32 cqid[2];
+	__u8 udma_mask;
+	__u8 rsvd[7];
+};
+
+struct ionic_qp_req {
+	struct ionic_qdesc sq;
+	struct ionic_qdesc rq;
+	__u8 sq_spec;
+	__u8 rq_spec;
+	__u8 sq_cmb;
+	__u8 rq_cmb;
+	__u8 udma_mask;
+	__u8 rsvd[3];
+};
+
+struct ionic_qp_resp {
+	__u32 qpid;
+	__u8 sq_cmb;
+	__u8 rq_cmb;
+	__u8 udma_idx;
+	__u8 rsvd[1];
+	__aligned_u64 sq_cmb_offset;
+	__aligned_u64 rq_cmb_offset;
+};
+
+struct ionic_srq_req {
+	struct ionic_qdesc rq;
+	__u8 rq_spec;
+	__u8 rq_cmb;
+	__u8 udma_mask;
+	__u8 rsvd[5];
+};
+
+struct ionic_srq_resp {
+	__u32 qpid;
+	__u8 rq_cmb;
+	__u8 udma_idx;
+	__u8 rsvd[2];
+	__aligned_u64 rq_cmb_offset;
+};
+
+#endif /* IONIC_ABI_H */