Patch "Bluetooth: hci_qca: Avoid setup failure on missing rampatch" has been added to the 4.4-stable tree

Patch "Bluetooth: hci_qca: Avoid setup failure on missing rampatch" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    Bluetooth: hci_qca: Avoid setup failure on missing rampatch

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     bluetooth-hci_qca-avoid-setup-failure-on-missing-rampatch.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Thu Mar 22 14:57:32 CET 2018
From: Loic Poulain <loic.poulain@linaro.org>
Date: Mon, 6 Nov 2017 12:16:56 +0100
Subject: Bluetooth: hci_qca: Avoid setup failure on missing rampatch

From: Loic Poulain <loic.poulain@linaro.org>


[ Upstream commit ba8f3597900291a93604643017fff66a14546015 ]

Assuming that the original code idea was to enable in-band sleeping
only if the setup_rome method returns succes and run in 'standard'
mode otherwise, we should not return setup_rome return value which
makes qca_setup fail if no rampatch/nvm file found.

This fixes BT issue on the dragonboard-820C p4 which includes the
following QCA controller:
hci0: Product:0x00000008
hci0: Patch  :0x00000111
hci0: ROM    :0x00000302
hci0: SOC    :0x00000044

Since there is no rampatch for this controller revision, just make
it work as is.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/bluetooth/hci_qca.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -936,6 +936,9 @@ static int qca_setup(struct hci_uart *hu
 	if (!ret) {
 		set_bit(STATE_IN_BAND_SLEEP_ENABLED, &qca->flags);
 		qca_debugfs_init(hdev);
+	} else if (ret == -ENOENT) {
+		/* No patch/nvm-config found, run with original fw/config */
+		ret = 0;
 	}
 
 	/* Setup bdaddr */


Patches currently in stable-queue which might be from loic.poulain@linaro.org are

queue-4.4/bluetooth-hci_qca-avoid-setup-failure-on-missing-rampatch.patch