On Mon, Oct 23, 2023 at 12:55:55PM +0200, Greg Kroah-Hartman wrote:
4.19-stable review patch. If anyone has any objections, please let me know.
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)
While that __ref is actually missing since the blamed commit, modpost only warns about .data -> .exit.text mismatches since
f177cd0c15fc ("modpost: Don't let "driver"s reference .exit.*")
(currently in next). So if your goal is to silence warnings in stable, patches of this type don't need to be backported unless f177cd0c15fc is backported, too. (But they don't hurt either.)
Best regards Uwe