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From: Jakub Kicinski <kuba@kernel.org>
To: Anant Thazhemadam <anant.thazhemadam@gmail.com>
Cc: linux-kernel-mentees@lists.linuxfoundation.org,
	Petko Manolov <petkan@nucleusys.com>,
	"David S. Miller" <davem@davemloft.net>,
	linux-usb@vger.kernel.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] net: usb: rtl8150: don't incorrectly assign random MAC addresses
Date: Sat, 10 Oct 2020 09:59:31 -0700
Message-ID: <20201010095302.5309c118@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> (raw)
In-Reply-To: <20201010064459.6563-1-anant.thazhemadam@gmail.com>

On Sat, 10 Oct 2020 12:14:59 +0530 Anant Thazhemadam wrote:
> get_registers() directly returns the return value of
> usb_control_msg_recv() - 0 if successful, and negative error number 
> otherwise.

Are you expecting Greg to take this as a part of some USB subsystem
changes? I don't see usb_control_msg_recv() in my tree, and the
semantics of usb_control_msg() are not what you described.

> However, in set_ethernet_addr(), this return value is incorrectly 
> checked.
> 
> Since this return value will never be equal to sizeof(node_id), a 
> random MAC address will always be generated and assigned to the 
> device; even in cases when get_registers() is successful.
> 
> Correctly modifying the condition that checks if get_registers() was 
> successful or not fixes this problem, and copies the ethernet address
> appropriately.
> 
> Fixes: f45a4248ea4c ("set random MAC address when set_ethernet_addr() fails")
> Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com>

The fixes tag does not follow the standard format:

Fixes tag: Fixes: f45a4248ea4c ("set random MAC address when set_ethernet_addr() fails")
Has these problem(s):
	- Subject does not match target commit subject
	  Just use
		git log -1 --format='Fixes: %h ("%s")'


Please put the relevant maintainer in the To: field of the email, and
even better - also mark the patch as [PATCH net], since it's a
networking fix.

  reply index

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-10  6:44 Anant Thazhemadam
2020-10-10 16:59 ` Jakub Kicinski [this message]
2020-10-10 18:04   ` Anant Thazhemadam
2020-10-10 18:16     ` Jakub Kicinski
2020-10-10 18:44       ` Anant Thazhemadam
2020-10-10 19:20         ` Jakub Kicinski
2020-10-11 17:30 ` [PATCH v2] " Anant Thazhemadam
2020-10-11 17:59   ` Jakub Kicinski
2020-10-11 18:33     ` Joe Perches
2020-10-11 19:31       ` Petko Manolov
2020-10-11 20:14         ` Joe Perches
2020-10-11 22:14   ` Stephen Rothwell
2020-10-15 21:59     ` Stephen Rothwell
2020-10-15 22:24       ` Jakub Kicinski
2020-10-15 22:37         ` Jakub Kicinski
2020-10-18 19:54           ` Jakub Kicinski

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