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From: Marcel Holtmann <marcel@holtmann.org>
To: Aditya Garg <gargaditya08@live.com>
Cc: Thorsten Leemhuis <regressions@leemhuis.info>,
	Orlando Chamberlain <redecorating@protonmail.com>,
	Daniel Winkler <danielwinkler@google.com>,
	Greg KH <gregkh@linuxfoundation.org>,
	Johan Hedberg <johan.hedberg@intel.com>,
	"linux-bluetooth@vger.kernel.org"
	<linux-bluetooth@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Luiz Augusto von Dentz <luiz.dentz@gmail.com>,
	"regressions@lists.linux.dev" <regressions@lists.linux.dev>,
	"sonnysasaka@chromium.org" <sonnysasaka@chromium.org>,
	"stable@vger.kernel.org" <stable@vger.kernel.org>
Subject: Re: [PATCH 2/6] btbcm: disable read tx power for MacBook Pro 16,1 (16 inch, 2019)
Date: Mon, 29 Nov 2021 09:08:16 +0100	[thread overview]
Message-ID: <EBE48AE4-BCE3-42A6-BA8E-304C789C4667@holtmann.org> (raw)
In-Reply-To: <5B9FF471-42DD-44DA-A9CE-0A83BA7A4212@live.com>

Hi Aditya,

> Bluetooth on Apple MacBook Pro 16,1 is unable to start due to LE Min/Max Tx Power being queried on startup. Add a DMI based quirk so that it is disabled.

list all the MacBooks that you found problematic right now. We add the
initial as a large batch instead of all individual.

> 
> Signed-off-by: Aditya Garg <gargaditya08@live.com>
> Tested-by: Aditya Garg <gargaditya08@live.com>
> ---
> drivers/bluetooth/btbcm.c | 20 ++++++++++++++++++++
> 1 file changed, 20 insertions(+)
> 
> diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c
> index e4182acee488c5..c1b0ca63880a68 100644
> --- a/drivers/bluetooth/btbcm.c
> +++ b/drivers/bluetooth/btbcm.c
> @@ -8,6 +8,7 @@
> 
> #include <linux/module.h>
> #include <linux/firmware.h>
> +#include <linux/dmi.h>
> #include <asm/unaligned.h>
> 
> #include <net/bluetooth/bluetooth.h>
> @@ -343,9 +344,23 @@ static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
> 	return skb;
> }
> 
> +static const struct dmi_system_id disable_broken_read_transmit_power[] = {
> +	{
> +		/* Match for Apple MacBook Pro 16,1 which needs
> +		 * Read LE Min/Max Tx Power to be disabled.
> +		 */

Actually leave the comment out. You are not adding any value that isn’t
already in the variable name or the DMI. It is just repeating the obvious.

> +		 .matches = {
> +			DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
> +			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,1"),
> +		},
> +	},
> +	{ }
> +};
> +
> static int btbcm_read_info(struct hci_dev *hdev)
> {
> 	struct sk_buff *skb;
> +	const struct dmi_system_id *dmi_id;
> 
> 	/* Read Verbose Config Version Info */
> 	skb = btbcm_read_verbose_config(hdev);
> @@ -362,6 +377,11 @@ static int btbcm_read_info(struct hci_dev *hdev)
> 
> 	bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
> 	kfree_skb(skb);
> +
> +	/* Read DMI and disable broken Read LE Min/Max Tx Power */
> +	dmi_id = dmi_first_match(disable_broken_read_transmit_power);
> +	if (dmi_id)
> +		set_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks);

	if (dmi_first_match(..))
		set_bit(.., &hdev->quirks);

There is really no need to have a variable for this.

Regards

Marcel


  parent reply	other threads:[~2021-11-29  8:10 UTC|newest]

Thread overview: 83+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <4970a940-211b-25d6-edab-21a815313954@protonmail.com>
     [not found] ` <20210930063106.19881-1-redecorating@protonmail.com>
2021-09-30 14:13   ` [PATCH] Bluetooth: add quirk disabling query LE tx power Orlando Chamberlain
2021-09-30 17:03     ` Thorsten Leemhuis
2021-09-30 17:58     ` Marcel Holtmann
2021-10-01  3:37       ` Orlando Chamberlain
2021-10-01  8:36         ` [PATCHv2] Bluetooth: quirk disabling LE Read Transmit Power Orlando Chamberlain
2021-10-01  9:35           ` Marcel Holtmann
2021-10-01 13:28             ` Orlando Chamberlain
2021-10-04 11:15               ` Orlando Chamberlain
2021-11-05 13:39                 ` Thorsten Leemhuis
2021-11-05 21:47           ` Luiz Augusto von Dentz
2021-11-06  9:41             ` Aditya Garg
2021-11-06 11:49               ` Greg KH
2021-11-06 17:27                 ` Aditya Garg
2021-11-07  8:35                   ` Greg KH
2021-11-16  8:18                     ` Thorsten Leemhuis
2021-11-16  9:02                       ` Orlando Chamberlain
2021-11-16  9:26                         ` Thorsten Leemhuis
2021-11-17  3:28                           ` Aditya Garg
2021-11-17  7:25                             ` Greg KH
2021-11-17  9:26                               ` Aditya Garg
2021-11-17  9:42                                 ` Thorsten Leemhuis
2021-11-17  9:59                                   ` Aditya Garg
2021-11-17 12:48                                   ` Orlando Chamberlain
2021-11-17 19:01                                     ` Marcel Holtmann
2021-11-19 16:59                                       ` Aditya Garg
2021-11-25 12:26                                         ` Thorsten Leemhuis
2021-11-26 15:15                                           ` Aditya Garg
2021-11-29  7:12                                             ` Aditya Garg
2021-11-29  7:22                                             ` [PATCH 1/6] Bluetooth: add " Aditya Garg
2021-11-29  7:27                                               ` [PATCH 2/6] btbcm: disable read tx power for MacBook Pro 16,1 (16 inch, 2019) Aditya Garg
2021-11-29  7:28                                                 ` [PATCH 3/6] btbcm: disable read tx power for MacBook Pro 16,2 (13 inch - 4 Thunderbolt Ports, 2020) Aditya Garg
2021-11-29  7:30                                                   ` [PATCH 4/6] btbcm: disable read tx power for MacBook Pro 16,4 (16 inch, 2019) Aditya Garg
2021-11-29  7:31                                                     ` [PATCH 5/6] btbcm: disable read tx power for iMac 20,1 (Retina 5K, 27-inch, 2020) Aditya Garg
2021-11-29  7:32                                                       ` [PATCH 6/6] btbcm: disable read tx power for iMac 20,2 " Aditya Garg
2021-11-29  7:46                                                     ` [PATCH v2 4/6] btbcm: disable read tx power for MacBook Pro 16,4 (16 inch, 2019) Aditya Garg
2021-11-29  7:45                                                   ` [PATCH v2 3/6] btbcm: disable read tx power for MacBook Pro 16,2 (13 inch - 4 Thunderbolt Ports, 2020) Aditya Garg
2021-11-29  7:44                                                 ` [PATCH v2 2/6] btbcm: disable read tx power for MacBook Pro 16,1 (16 inch, 2019) Aditya Garg
2021-11-29  8:08                                                 ` Marcel Holtmann [this message]
2021-11-29  8:11                                                   ` [PATCH " Aditya Garg
2021-11-29  8:22                                                     ` Marcel Holtmann
2021-11-29  8:42                                                       ` Aditya Garg
2021-11-29  7:32                                               ` [PATCH 1/6] Bluetooth: add quirk disabling LE Read Transmit Power Greg KH
2021-11-29  7:42                                                 ` [PATCH v2 " Aditya Garg
2021-11-29  7:47                                                   ` Greg KH
2021-11-29  7:49                                                     ` Aditya Garg
2021-11-29  7:47                                                   ` Greg KH
2021-11-29  8:05                                                   ` Marcel Holtmann
2021-11-29  8:32                                                     ` [PATCH v3 1/2] " Aditya Garg
2021-11-29  8:35                                                       ` [PATCH v3 2/2] btbcm: disable read tx power for affected Macs with the T2 Security chip Aditya Garg
2021-11-29  8:50                                                         ` [PATCH v3 resend " Aditya Garg
2021-11-29  9:05                                                           ` [PATCH v4 " Aditya Garg
2021-11-29  9:25                                                             ` [PATCH v5 " Aditya Garg
2021-11-29 11:03                                                           ` [PATCH v3 resend " Marcel Holtmann
2021-11-29 12:01                                                             ` Aditya Garg
2021-11-29  8:47                                                       ` [PATCH v3 resend 1/2] Bluetooth: add quirk disabling LE Read Transmit Power Aditya Garg
2021-11-29  9:03                                                         ` [PATCH v4 " Aditya Garg
2021-11-29  9:24                                                           ` [PATCH v5 " Aditya Garg
2021-11-29 13:59                                                             ` [PATCH v6 " Aditya Garg
2021-11-29 14:00                                                               ` [PATCH v6 2/2] btbcm: disable read tx power for affected Macs with the T2 Security chip Aditya Garg
2021-11-30  8:45                                                                 ` Aditya Garg
2021-11-30  8:54                                                                   ` Greg KH
2021-11-30 10:28                                                                 ` Orlando Chamberlain
2021-11-30 11:38                                                               ` [PATCH v7 1/2] Bluetooth: add quirk disabling LE Read Transmit Power Aditya Garg
2021-11-30 11:40                                                                 ` [PATCH v7 2/2] btbcm: disable read tx power for affected Macs with the T2 Security chip Aditya Garg
2021-11-30 11:41                                                                 ` [PATCH v7 1/2] Bluetooth: add quirk disabling LE Read Transmit Power Greg KH
2021-11-30 11:50                                                                   ` Aditya Garg
2021-11-30 11:48                                                                 ` [PATCH v7 resend " Aditya Garg
2021-11-30 11:49                                                                   ` [PATCH v7 resend 2/2] btbcm: disable read tx power for affected Macs with the T2 Security chip Aditya Garg
2021-11-30 12:03                                                                   ` [PATCH v7 resend 1/2] Bluetooth: add quirk disabling LE Read Transmit Power Greg KH
2021-11-30 12:53                                                                     ` Aditya Garg
2021-11-30 12:53                                                                   ` [PATCH v8 " Aditya Garg
2021-11-30 12:54                                                                     ` [PATCH v8 2/2] btbcm: disable read tx power for affected Macs with the T2 Security chip Aditya Garg
2021-12-01  7:25                                                                     ` [PATCH v8 1/2] Bluetooth: add quirk disabling LE Read Transmit Power Marcel Holtmann
2021-12-02 10:15                                                                     ` [PATCH v9 " Aditya Garg
2021-12-02 10:16                                                                       ` [PATCH v9 2/2] btbcm: disable read tx power for affected Macs with the T2 Security chip Aditya Garg
2021-12-02 12:41                                                                       ` [PATCH v10 1/2] Bluetooth: add quirk disabling LE Read Transmit Power Aditya Garg
2021-12-02 12:42                                                                         ` [PATCH v10 2/2] btbcm: disable read tx power for some Macs with the T2 Security chip Aditya Garg
2021-12-03 21:28                                                                           ` Marcel Holtmann
2021-12-21 13:44                                                                             ` Thorsten Leemhuis
2021-12-03 21:28                                                                         ` [PATCH v10 1/2] Bluetooth: add quirk disabling LE Read Transmit Power Marcel Holtmann
2021-11-29  8:52                                                       ` [PATCH v3 " Thorsten Leemhuis
2021-11-29 11:02                                                       ` Marcel Holtmann
2021-11-07  3:25             ` [PATCHv2] Bluetooth: " Orlando Chamberlain

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