[PATCH 6.1 007/131] platform/x86: hp-wmi:: Mark driver struct with __refdata to prevent section mismatch warning

Greg Kroah-Hartman
2023-10-16T08:55:09Z

From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

[ Upstream commit 5b44abbc39ca15df80d0da4756078c98c831090f ]

As described in the added code comment, a reference to .exit.text is ok
for drivers registered via module_platform_driver_probe(). Make this
explicit to prevent a section mismatch warning:

WARNING: modpost: drivers/platform/x86/hp/hp-wmi: section mismatch in reference: hp_wmi_driver+0x8 (section: .data) -> hp_wmi_bios_remove (section: .exit.text)

Fixes: c165b80cfecc ("hp-wmi: fix handling of platform device")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20231004111624.2667753-1-u.kleine-koenig@pengutronix.de
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/platform/x86/hp/hp-wmi.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/hp/hp-wmi.c b/drivers/platform/x86/hp/hp-wmi.c
index 3bacee2b8d521..51f23ff1f2b05 100644
--- a/drivers/platform/x86/hp/hp-wmi.c
+++ b/drivers/platform/x86/hp/hp-wmi.c
@@ -1399,7 +1399,13 @@ static const struct dev_pm_ops hp_wmi_pm_ops = {
.restore = hp_wmi_resume_handler,
};

-static struct platform_driver hp_wmi_driver = {
+/*
+ * hp_wmi_bios_remove() lives in .exit.text. For drivers registered via
+ * module_platform_driver_probe() this is ok because they cannot get unbound at
+ * runtime. So mark the driver struct with __refdata to prevent modpost
+ * triggering a section mismatch warning.
+ */
+static struct platform_driver hp_wmi_driver __refdata = {
.driver = {
.name = "hp-wmi",
.pm = &hp_wmi_pm_ops,
--
2.40.1