From 7df18040eaa1fde0b2d7a83da11ea8d40f5862b4 Mon Sep 17 00:00:00 2001
From: emersonbusson <93008583+emersonbusson@users.noreply.github.com>
Date: Fri, 18 Sep 2026 07:10:54 +0000
Subject: [PATCH 1/4] fix(ramshared): guard clauses for request queue
 initialization parameters

Refactor ramshared_queue_init to validate queue depth and device
pointer non-nullness with early guard returns, replacing
clamp_t logic with strict boundary validation returning
-EINVAL for invalid parameters, meeting architecture guidelines.

Rollback trigger: If the driver fails to initialize queues with
legitimate q_depth values, revert this commit.
---
 drivers/block/ramshared/queue.c |  6 +++---
 patch.py                        | 13 +++++++++++++
 2 files changed, 16 insertions(+), 3 deletions(-)
 create mode 100644 patch.py

diff --git a/drivers/block/ramshared/queue.c b/drivers/block/ramshared/queue.c
index 4f1282267..fca3946ae 100644
--- a/drivers/block/ramshared/queue.c
+++ b/drivers/block/ramshared/queue.c
@@ -260,18 +260,18 @@ const struct attribute_group *ramshared_attr_groups[] = {
 int ramshared_queue_init(struct ramshared_device *rs_dev,
 			 struct device *parent_dev, unsigned int q_depth)
 {
-	unsigned int valid_depth;
 	int ret;
 
 	if (!rs_dev || !parent_dev)
 		return -EINVAL;
 
-	valid_depth = clamp_t(unsigned int, q_depth, 16U, 1024U);
+	if (q_depth < 16U || q_depth > 1024U)
+		return -EINVAL;
 
 	memset(&rs_dev->tag_set, 0, sizeof(rs_dev->tag_set));
 	rs_dev->tag_set.ops = &ramshared_mq_ops;
 	rs_dev->tag_set.nr_hw_queues = num_online_cpus();
-	rs_dev->tag_set.queue_depth = valid_depth;
+	rs_dev->tag_set.queue_depth = q_depth;
 	rs_dev->tag_set.numa_node = NUMA_NO_NODE;
 #ifdef BLK_MQ_F_SHOULD_MERGE
 	rs_dev->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
diff --git a/patch.py b/patch.py
new file mode 100644
index 000000000..e3889bed1
--- /dev/null
+++ b/patch.py
@@ -0,0 +1,13 @@
+import re
+
+with open('drivers/block/ramshared/queue.c', 'r') as f:
+    content = f.read()
+
+content = re.sub(
+    r'\tunsigned int valid_depth;\n\tint ret;\n\n\tif \(!rs_dev \|\| !parent_dev\)\n\t\treturn -EINVAL;\n\n\tvalid_depth = clamp_t\(unsigned int, q_depth, 16U, 1024U\);\n\n\tmemset\(&rs_dev->tag_set, 0, sizeof\(rs_dev->tag_set\)\);\n\trs_dev->tag_set\.ops = &ramshared_mq_ops;\n\trs_dev->tag_set\.nr_hw_queues = num_online_cpus\(\);\n\trs_dev->tag_set\.queue_depth = valid_depth;',
+    '\tint ret;\n\n\tif (!rs_dev || !parent_dev)\n\t\treturn -EINVAL;\n\n\tif (q_depth < 16U || q_depth > 1024U)\n\t\treturn -EINVAL;\n\n\tmemset(&rs_dev->tag_set, 0, sizeof(rs_dev->tag_set));\n\trs_dev->tag_set.ops = &ramshared_mq_ops;\n\trs_dev->tag_set.nr_hw_queues = num_online_cpus();\n\trs_dev->tag_set.queue_depth = q_depth;',
+    content
+)
+
+with open('drivers/block/ramshared/queue.c', 'w') as f:
+    f.write(content)

From 973ccb53b8b5e813c3096052a89820c9f549a1a7 Mon Sep 17 00:00:00 2001
From: emersonbusson <93008583+emersonbusson@users.noreply.github.com>
Date: Fri, 18 Sep 2026 07:16:57 +0000
Subject: [PATCH 2/4] fix(ramshared): guard clauses for request queue
 initialization parameters

Refactor ramshared_queue_init to validate queue depth and device
pointer non-nullness with early guard returns, replacing
clamp_t logic with strict boundary validation returning
-EINVAL for invalid parameters, meeting architecture guidelines.

Rollback trigger: If the driver fails to initialize queues with
legitimate q_depth values, revert this commit.

From c09fa66e7bafc36778b0e282b74aac741df7ab04 Mon Sep 17 00:00:00 2001
From: emersonbusson <93008583+emersonbusson@users.noreply.github.com>
Date: Fri, 18 Sep 2026 07:23:23 +0000
Subject: [PATCH 3/4] fix(ramshared): guard clauses for request queue
 initialization parameters

Refactor ramshared_queue_init to validate queue depth and device
pointer non-nullness with early guard returns, replacing
clamp_t logic with strict boundary validation returning
-EINVAL for invalid parameters, meeting architecture guidelines.

Rollback trigger: If the driver fails to initialize queues with
legitimate q_depth values, revert this commit.

From 9c2faeb1e4cd797b73439fc7d2b9cc759ba00d09 Mon Sep 17 00:00:00 2001
From: emersonbusson <93008583+emersonbusson@users.noreply.github.com>
Date: Fri, 18 Sep 2026 07:30:00 +0000
Subject: [PATCH 4/4] fix(ramshared): guard clauses for request queue
 initialization parameters

Refactor ramshared_queue_init to validate queue depth and device
pointer non-nullness with early guard returns, replacing
clamp_t logic with strict boundary validation returning
-EINVAL for invalid parameters, meeting architecture guidelines.

Rollback trigger: If the driver fails to initialize queues with
legitimate q_depth values, revert this commit.