Hi,
On 7/21/23 16:54, Maxim Mikityanskiy wrote:
> Only the HW rfkill state is toggled on laptops with quirks->ec_read_only
> (so far only MSI Wind U90/U100). There are, however, a few issues with
> the implementation:
>
> 1. The initial HW state is always unblocked, regardless of the actual
> state on boot, because msi_init_rfkill only sets the SW state,
> regardless of ec_read_only.
>
> 2. The initial SW state corresponds to the actual state on boot, but it
> can't be changed afterwards, because set_device_state returns
> -EOPNOTSUPP. It confuses the userspace, making Wi-Fi and/or Bluetooth
> unusable if it was blocked on boot, and breaking the airplane mode if
> the rfkill was unblocked on boot.
>
> Address the above issues by properly initializing the HW state on
> ec_read_only laptops and by allowing the userspace to toggle the SW
> state. Don't set the SW state ourselves and let the userspace fully
> control it. Toggling the SW state is a no-op, however, it allows the
> userspace to properly toggle the airplane mode. The actual SW radio
> disablement is handled by the corresponding rtl818x_pci and btusb
> drivers that have their own rfkills.
>
> Tested on MSI Wind U100 Plus, BIOS ver 1.0G, EC ver 130.
>
> Fixes: 0816392b97d4 ("msi-laptop: merge quirk tables to one")
> Fixes: 0de6575ad0a8 ("msi-laptop: Add MSI Wind U90/U100 support")
> Signed-off-by: Maxim Mikityanskiy <maxtram95@xxxxxxxxx>
Thank you for your patch, I've applied this patch to my fixes
branch:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=fixes
Note it will show up in my fixes branch once I've pushed my
local branch there, which might take a while.
I will include this patch in my next fixes pull-req to Linus
for the current kernel development cycle.
Regards,
Hans
> ---
> drivers/platform/x86/msi-laptop.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/platform/x86/msi-laptop.c b/drivers/platform/x86/msi-laptop.c
> index 6b18ec543ac3..f4c6c36e05a5 100644
> --- a/drivers/platform/x86/msi-laptop.c
> +++ b/drivers/platform/x86/msi-laptop.c
> @@ -208,7 +208,7 @@ static ssize_t set_device_state(const char *buf, size_t count, u8 mask)
> return -EINVAL;
>
> if (quirks->ec_read_only)
> - return -EOPNOTSUPP;
> + return 0;
>
> /* read current device state */
> result = ec_read(MSI_STANDARD_EC_COMMAND_ADDRESS, &rdata);
> @@ -838,15 +838,15 @@ static bool msi_laptop_i8042_filter(unsigned char data, unsigned char str,
> static void msi_init_rfkill(struct work_struct *ignored)
> {
> if (rfk_wlan) {
> - rfkill_set_sw_state(rfk_wlan, !wlan_s);
> + msi_rfkill_set_state(rfk_wlan, !wlan_s);
> rfkill_wlan_set(NULL, !wlan_s);
> }
> if (rfk_bluetooth) {
> - rfkill_set_sw_state(rfk_bluetooth, !bluetooth_s);
> + msi_rfkill_set_state(rfk_bluetooth, !bluetooth_s);
> rfkill_bluetooth_set(NULL, !bluetooth_s);
> }
> if (rfk_threeg) {
> - rfkill_set_sw_state(rfk_threeg, !threeg_s);
> + msi_rfkill_set_state(rfk_threeg, !threeg_s);
> rfkill_threeg_set(NULL, !threeg_s);
> }
> }
