linux-kernel - [PATCH v2] clk: Disable KUNIT_UML

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Message-Id: <20251222-clk-v2-v2-1-83e1a5ed8c7e@nxp.com>
Date: Mon, 22 Dec 2025 15:06:33 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.com>
To: Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, 
 Thomas Weißschuh <thomas.weissschuh@...utronix.de>, 
 David Gow <davidgow@...gle.com>, Johannes Berg <johannes@...solutions.net>, 
 Shuah Khan <skhan@...uxfoundation.org>, Brian Masney <bmasney@...hat.com>
Cc: linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Peng Fan <peng.fan@....com>
Subject: [PATCH v2] clk: Disable KUNIT_UML_PCI

From: Peng Fan <peng.fan@....com>

commit 031cdd3bc3f3 ("kunit: Enable PCI on UML without triggering WARN()")
enables KUNIT_UML_PCI, but clk driver could not work with it.
Deselect KUNIT_UML_PCI to avoid the failure. Dump as below:
WARNING: CPU: 0 PID: 227 at lib/logic_iomem.c:141 __raw_readl+0xac/0xe0
CPU: 0 UID: 0 PID: 227 Comm: kunit_try_catch Tainted: G
Tainted: [N]=TEST
Stack:
 a0883d00 00000001 00000000 ffffff00
 603ef142 60044832 6002598b 00000000
 00000000 600211b3 00000001 00000000
Call Trace:
 [<6032534c>] ? __raw_readl+0xac/0xe0
 [<60044832>] ? dump_stack_lvl+0x57/0x73
 [<6002598b>] ? _printk+0x0/0x61
 [<600211b3>] ? __warn.cold+0x61/0xeb
 [<600212cc>] ? warn_slowpath_fmt+0x8f/0x9c
 [<6002123d>] ? warn_slowpath_fmt+0x0/0x9c
 [<6032534c>] ? __raw_readl+0xac/0xe0
 [<6002123d>] ? warn_slowpath_fmt+0x0/0x9c
 [<6029e2ad>] ? clk_gate_endisable+0xcd/0x110
 [<6029e315>] ? clk_gate_enable+0x15/0x20
 [<6028795e>] ? clk_core_enable+0x6e/0xf0
 [<60289f1f>] ? clk_enable+0x4f/0xa0
 [<602a06af>] ? clk_gate_test_enable+0xbf/0x360
 [<60053df9>] ? os_nsecs+0x29/0x40
 [<600cd300>] ? ktime_get_ts64+0x0/0x130
 [<600816c0>] ? to_kthread+0x0/0x50
 [<602507bb>] ? kunit_try_run_case+0x7b/0x100
 [<600816c0>] ? to_kthread+0x0/0x50
 [<60252aa0>] ? kunit_generic_run_threadfn_adapter+0x0/0x30
 [<60252ab2>] ? kunit_generic_run_threadfn_adapter+0x12/0x30
 [<60082091>] ? kthread+0xf1/0x270
 [<60047591>] ? new_thread_handler+0x41/0x60
---[ end trace 0000000000000000 ]---

Reviewed-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Signed-off-by: Peng Fan <peng.fan@....com>
---
Changes in v2:
- Drop fixes tag
- Add R-b
- Remove "CONFIG_UML_PCI_OVER_VIRTIO=n"
---
 drivers/clk/.kunitconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/.kunitconfig b/drivers/clk/.kunitconfig
index 08e26137f3d9..8a0ea41934a2 100644
--- a/drivers/clk/.kunitconfig
+++ b/drivers/clk/.kunitconfig
@@ -1,4 +1,5 @@
 CONFIG_KUNIT=y
+CONFIG_KUNIT_UML_PCI=n
 CONFIG_OF=y
 CONFIG_OF_OVERLAY=y
 CONFIG_COMMON_CLK=y
@@ -6,4 +7,3 @@ CONFIG_CLK_KUNIT_TEST=y
 CONFIG_CLK_FIXED_RATE_KUNIT_TEST=y
 CONFIG_CLK_GATE_KUNIT_TEST=y
 CONFIG_CLK_FD_KUNIT_TEST=y
-CONFIG_UML_PCI_OVER_VIRTIO=n

---
base-commit: cc3aa43b44bdb43dfbac0fcb51c56594a11338a8
change-id: 20251222-clk-v2-85f73c84966e

Best regards,
-- 
Peng Fan <peng.fan@....com>