netdev - Re: [PATCH 1/5] Bluetooth: Remove superfluous call to hci_conn_check

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Date: Thu, 4 Jan 2024 20:52:51 +0000
From: Simon Horman <horms@...nel.org>
To: Jonas Dreßler <verdre@...d.nl>
Cc: Marcel Holtmann <marcel@...tmann.org>,
	Johan Hedberg <johan.hedberg@...il.com>,
	Luiz Augusto von Dentz <luiz.dentz@...il.com>,
	linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH 1/5] Bluetooth: Remove superfluous call to
 hci_conn_check_pending()

On Tue, Jan 02, 2024 at 07:59:28PM +0100, Jonas Dreßler wrote:
> The "pending connections" feature was originally introduced with commit
> 4c67bc74f016b0d360b8573e18969c0ff7926974 and
> 6bd57416127e92d35e6798925502c84e14a3a966 to handle controllers supporting
> only a single connection request at a time. Later things were extended to
> also cancel ongoing inquiries on connect() with commit
> 89e65975fea5c25706e8cc3a89f9f97b20fc45ad.
> 
> With commit a9de9248064bfc8eb0a183a6a951a4e7b5ca10a4,
> hci_conn_check_pending() was introduced as a helper to consolidate a few
> places where we check for pending connections (indicated by the
> BT_CONNECT2 flag) and then try to connect.
> 
> This refactoring commit also snuck in two more calls to
> hci_conn_check_pending():
> 
> - One is in the failure callback of hci_cs_inquiry(), this one probably
> makes sense: If we send an "HCI Inquiry" command and then immediately
> after a "Create Connection" command, the "Create Connection" command might
> fail before the "HCI Inquiry" command, and then we want to retry the
> "Create Connection" on failure of the "HCI Inquiry".
> 
> - The other added call to hci_conn_check_pending() is in the event handler
> for the "Remote Name" event, this seems unrelated and is possibly a
> copy-paste error, so remove that one.
> 
> Fixes: a9de9248064bfc8eb0a183a6a951a4e7b5ca10a4
> Signed-off-by: Jonas Dreßler <verdre@...d.nl>

Nit: a correct format for the fixes tag is

Fixes: a9de9248064b ("[Bluetooth] Switch from OGF+OCF to using only opcodes")

Likewise, in the patch description, it is usual to cite patches
using a similar format.

e.g. introduced in commit
     4c67bc74f016 ("[Bluetooth] Support concurrent connect requests")

Note it is usual to use a hash of at least 12 characters
(and not much more than that).

...