| Message ID | 2e3783106bf6bd9a7bdeb12b706378fb16316471.1711748999.git.u.kleine-koenig@pengutronix.de (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Input: amimouse - Mark driver struct with __refdata to prevent section mismatch | expand |
Hello, On Fri, Mar 29, 2024 at 10:54:38PM +0100, Uwe Kleine-König wrote: > 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 the following section mismatch warning > > WARNING: modpost: drivers/input/mouse/amimouse: section mismatch in reference: amimouse_driver+0x8 (section: .data) -> amimouse_remove (section: .exit.text) > > that triggers on an allmodconfig W=1 build. > > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> I'd like to enable these warnings even for W=0 builds, so it would be great to get it into the main line soon. If you apply it, please notice that I fat-fingered the parameters to git send-email and it was sent in a thread. So (assuming you're using b4) you'd need: b4 am -P _ -v1 2e3783106bf6bd9a7bdeb12b706378fb16316471.1711748999.git.u.kleine-koenig@pengutronix.de Best regards Uwe
Hello Dmitry, On Mon, Apr 15, 2024 at 04:34:53PM +0200, Uwe Kleine-König wrote: > On Fri, Mar 29, 2024 at 10:54:38PM +0100, Uwe Kleine-König wrote: > > 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 the following section mismatch warning > > > > WARNING: modpost: drivers/input/mouse/amimouse: section mismatch in reference: amimouse_driver+0x8 (section: .data) -> amimouse_remove (section: .exit.text) > > > > that triggers on an allmodconfig W=1 build. > > > > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> > > I'd like to enable these warnings even for W=0 builds, so it would be > great to get it into the main line soon. > > If you apply it, please notice that I fat-fingered the parameters to git > send-email and it was sent in a thread. So (assuming you're using b4) > you'd need: > > b4 am -P _ -v1 2e3783106bf6bd9a7bdeb12b706378fb16316471.1711748999.git.u.kleine-koenig@pengutronix.de Do you have this patch still on your radar? I guess it's to late to get it into v6.9 now, but do you plan to apply it for v6.10-rc1? Best regards Uwe
diff --git a/drivers/input/mouse/amimouse.c b/drivers/input/mouse/amimouse.c index cda0c3ff5a28..2fbbaeb76d70 100644 --- a/drivers/input/mouse/amimouse.c +++ b/drivers/input/mouse/amimouse.c @@ -132,7 +132,13 @@ static void __exit amimouse_remove(struct platform_device *pdev) input_unregister_device(dev); } -static struct platform_driver amimouse_driver = { +/* + * amimouse_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 amimouse_driver __refdata = { .remove_new = __exit_p(amimouse_remove), .driver = { .name = "amiga-mouse",
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 the following section mismatch warning WARNING: modpost: drivers/input/mouse/amimouse: section mismatch in reference: amimouse_driver+0x8 (section: .data) -> amimouse_remove (section: .exit.text) that triggers on an allmodconfig W=1 build. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> --- drivers/input/mouse/amimouse.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) base-commit: a6bd6c9333397f5a0e2667d4d82fef8c970108f2