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Message-Id: <985A2192-C2F2-4361-BE23-9E9A5F53DAFA@holtmann.org>
Date: Sat, 8 Jul 2017 14:20:15 +0200
From: Marcel Holtmann <marcel@...tmann.org>
To: Sundar Nagarajan <sun.nagarajan@...il.com>
Cc: Johannes Berg <johannes@...solutions.net>,
"David S. Miller" <davem@...emloft.net>,
linux-wireless <linux-wireless@...r.kernel.org>,
Network Development <netdev@...r.kernel.org>,
linux-kernel@...r.kernel.org
Subject: Re: Request to add bluetooth module identifier to
net/rfkill/rfkill-gpio.c
Hi Sundar,
> I have a Cherry Trail laptop with an Atom X5-Z8300. It has a bluetooth
> chip that needs the r8723bs (coexisting RTL 8723BS wifi and
> bluetooth).
>
> I am using linux-next (20150817) with the r8723bs staging driver and
> the firmware and utility from https://github.com/lwfinger/rtl8723bs_bt
> by Larry finger.
>
> With linux-next the bluetooth works SOMETIMES, but on reboot, it does
> not work any more (no bluetooth interfaces are detected and hciconfig
> shows nothing).
>
> I am a kernel novice, but I saw that another kernel that I had tried
> had the following line added in struct acpi_device_id
> rfkill_acpi_match:
>
> { "OBDA8723",RFKILL_TYPE_BLUETOOTH }
>
> With the attached patch applied (one line added), my bluetooth works every time.
>
> Does this belong in rfkill-gpio.c, or should I contact someone else?
it does not belong in rfkill-gpio.c since this controls the power of the Bluetooth device. This belongs in the Bluetooth driver. We already moved all the Intel and Broadcom ones into hci_intel.c and respectively hci_bcm.c. So have the staging driver deal with the power GPIO.
Regards
Marcel
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