Hi, Benjamin > From: linux-acpi-owner@xxxxxxxxxxxxxxx [mailto:linux-acpi- > owner@xxxxxxxxxxxxxxx] On Behalf Of Benjamin Tissoires > Subject: [PATCH] ACPI / button: remove pointer to old lid_sysfs on unbind > > When we removed the procfs dir on error or if the driver is > unbound, the two variables acpi_lid_dir and acpi_button_dir > were not reset. On the next rebind, those static variables > were not null and we couldn't re-register the device again. > > Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx> > --- > drivers/acpi/button.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c > index 5c3b091..e413599 100644 > --- a/drivers/acpi/button.c > +++ b/drivers/acpi/button.c > @@ -188,9 +188,11 @@ done: [Lv Zheng] I have a concern here for acpi_button_add_fs(). It looks like that this function doesn't support 2 lid devices. So why do we need /proc/acpi/button/lid/LID0 folder? > remove_dev_dir: > remove_proc_entry(acpi_device_bid(device), > acpi_lid_dir); > + acpi_lid_dir = NULL; > acpi_device_dir(device) = NULL; > remove_lid_dir: > remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, > acpi_button_dir); [Lv Zheng] Should acpi_lid_dir = NULL be put here? > + acpi_button_dir = NULL; > remove_button_dir: > remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir); [Lv Zheng] Should acpi_button_dir = NULL be put here? > goto done; > @@ -207,8 +209,10 @@ static int acpi_button_remove_fs(struct > acpi_device *device) > acpi_device_dir(device)); > remove_proc_entry(acpi_device_bid(device), > acpi_lid_dir); > + acpi_lid_dir = NULL; > acpi_device_dir(device) = NULL; > remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, > acpi_button_dir); [Lv Zheng] Should acpi_lid_dir = NULL be put here? > + acpi_button_dir = NULL; > remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir); [Lv Zheng] Should acpi_button_dir = NULL be put here? Thanks and best regards Lv > > return 0; > -- > 2.5.5 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
