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, 223 insertions, 0 deletions

diff --git a/include/trace/events/oom.h b/include/trace/events/oom.h
new file mode 100644
index 000000000..9f0a5d148
--- /dev/null
+++ b/include/trace/events/oom.h
@@ -0,0 +1,223 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM oom
+
+#if !defined(_TRACE_OOM_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_OOM_H
+#include <linux/tracepoint.h>
+#include <trace/events/mmflags.h>
+
+#define PG_COUNT_TO_KB(x) ((x) << (PAGE_SHIFT - 10))
+
+TRACE_EVENT(oom_score_adj_update,
+
+	TP_PROTO(struct task_struct *task),
+
+	TP_ARGS(task),
+
+	TP_STRUCT__entry(
+		__field(	pid_t,	pid)
+		__array(	char,	comm,	TASK_COMM_LEN )
+		__field(	short,	oom_score_adj)
+	),
+
+	TP_fast_assign(
+		__entry->pid = task->pid;
+		memcpy(__entry->comm, task->comm, TASK_COMM_LEN);
+		__entry->oom_score_adj = task->signal->oom_score_adj;
+	),
+
+	TP_printk("pid=%d comm=%s oom_score_adj=%hd",
+		__entry->pid, __entry->comm, __entry->oom_score_adj)
+);
+
+TRACE_EVENT(reclaim_retry_zone,
+
+	TP_PROTO(struct zoneref *zoneref,
+		int order,
+		unsigned long reclaimable,
+		unsigned long available,
+		unsigned long min_wmark,
+		int no_progress_loops,
+		bool wmark_check),
+
+	TP_ARGS(zoneref, order, reclaimable, available, min_wmark, no_progress_loops, wmark_check),
+
+	TP_STRUCT__entry(
+		__field(	int, node)
+		__field(	int, zone_idx)
+		__field(	int,	order)
+		__field(	unsigned long,	reclaimable)
+		__field(	unsigned long,	available)
+		__field(	unsigned long,	min_wmark)
+		__field(	int,	no_progress_loops)
+		__field(	bool,	wmark_check)
+	),
+
+	TP_fast_assign(
+		__entry->node = zonelist_node_idx(zoneref);
+		__entry->zone_idx = zonelist_zone_idx(zoneref);
+		__entry->order = order;
+		__entry->reclaimable = reclaimable;
+		__entry->available = available;
+		__entry->min_wmark = min_wmark;
+		__entry->no_progress_loops = no_progress_loops;
+		__entry->wmark_check = wmark_check;
+	),
+
+	TP_printk("node=%d zone=%-8s order=%d reclaimable=%lu available=%lu min_wmark=%lu no_progress_loops=%d wmark_check=%d",
+			__entry->node, __print_symbolic(__entry->zone_idx, ZONE_TYPE),
+			__entry->order,
+			__entry->reclaimable, __entry->available, __entry->min_wmark,
+			__entry->no_progress_loops,
+			__entry->wmark_check)
+);
+
+TRACE_EVENT(mark_victim,
+	TP_PROTO(struct task_struct *task, uid_t uid),
+
+	TP_ARGS(task, uid),
+
+	TP_STRUCT__entry(
+		__field(int, pid)
+		__string(comm, task->comm)
+		__field(unsigned long, total_vm)
+		__field(unsigned long, anon_rss)
+		__field(unsigned long, file_rss)
+		__field(unsigned long, shmem_rss)
+		__field(uid_t, uid)
+		__field(unsigned long, pgtables)
+		__field(short, oom_score_adj)
+	),
+
+	TP_fast_assign(
+		__entry->pid = task->pid;
+		__assign_str(comm);
+		__entry->total_vm = PG_COUNT_TO_KB(task->mm->total_vm);
+		__entry->anon_rss = PG_COUNT_TO_KB(get_mm_counter(task->mm, MM_ANONPAGES));
+		__entry->file_rss = PG_COUNT_TO_KB(get_mm_counter(task->mm, MM_FILEPAGES));
+		__entry->shmem_rss = PG_COUNT_TO_KB(get_mm_counter(task->mm, MM_SHMEMPAGES));
+		__entry->uid = uid;
+		__entry->pgtables = mm_pgtables_bytes(task->mm) >> 10;
+		__entry->oom_score_adj = task->signal->oom_score_adj;
+	),
+
+	TP_printk("pid=%d comm=%s total-vm=%lukB anon-rss=%lukB file-rss:%lukB shmem-rss:%lukB uid=%u pgtables=%lukB oom_score_adj=%hd",
+		__entry->pid,
+		__get_str(comm),
+		__entry->total_vm,
+		__entry->anon_rss,
+		__entry->file_rss,
+		__entry->shmem_rss,
+		__entry->uid,
+		__entry->pgtables,
+		__entry->oom_score_adj
+	)
+);
+
+TRACE_EVENT(wake_reaper,
+	TP_PROTO(int pid),
+
+	TP_ARGS(pid),
+
+	TP_STRUCT__entry(
+		__field(int, pid)
+	),
+
+	TP_fast_assign(
+		__entry->pid = pid;
+	),
+
+	TP_printk("pid=%d", __entry->pid)
+);
+
+TRACE_EVENT(start_task_reaping,
+	TP_PROTO(int pid),
+
+	TP_ARGS(pid),
+
+	TP_STRUCT__entry(
+		__field(int, pid)
+	),
+
+	TP_fast_assign(
+		__entry->pid = pid;
+	),
+
+	TP_printk("pid=%d", __entry->pid)
+);
+
+TRACE_EVENT(finish_task_reaping,
+	TP_PROTO(int pid),
+
+	TP_ARGS(pid),
+
+	TP_STRUCT__entry(
+		__field(int, pid)
+	),
+
+	TP_fast_assign(
+		__entry->pid = pid;
+	),
+
+	TP_printk("pid=%d", __entry->pid)
+);
+
+TRACE_EVENT(skip_task_reaping,
+	TP_PROTO(int pid),
+
+	TP_ARGS(pid),
+
+	TP_STRUCT__entry(
+		__field(int, pid)
+	),
+
+	TP_fast_assign(
+		__entry->pid = pid;
+	),
+
+	TP_printk("pid=%d", __entry->pid)
+);
+
+#ifdef CONFIG_COMPACTION
+TRACE_EVENT(compact_retry,
+
+	TP_PROTO(int order,
+		enum compact_priority priority,
+		enum compact_result result,
+		int retries,
+		int max_retries,
+		bool ret),
+
+	TP_ARGS(order, priority, result, retries, max_retries, ret),
+
+	TP_STRUCT__entry(
+		__field(	int, order)
+		__field(	int, priority)
+		__field(	int, result)
+		__field(	int, retries)
+		__field(	int, max_retries)
+		__field(	bool, ret)
+	),
+
+	TP_fast_assign(
+		__entry->order = order;
+		__entry->priority = priority;
+		__entry->result = compact_result_to_feedback(result);
+		__entry->retries = retries;
+		__entry->max_retries = max_retries;
+		__entry->ret = ret;
+	),
+
+	TP_printk("order=%d priority=%s compaction_result=%s retries=%d max_retries=%d should_retry=%d",
+			__entry->order,
+			__print_symbolic(__entry->priority, COMPACTION_PRIORITY),
+			__print_symbolic(__entry->result, COMPACTION_FEEDBACK),
+			__entry->retries, __entry->max_retries,
+			__entry->ret)
+);
+#endif /* CONFIG_COMPACTION */
+#endif
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>