netdev - Re: [PATCH V1 net] net/mlx4_core: Preserve pci_dev_data after __mlx4_remove

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Date:	Fri, 11 Apr 2014 16:26:12 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	weiyang@...ux.vnet.ibm.com
Cc:	linux-pci@...r.kernel.org, netdev@...r.kernel.org,
	bhelgaas@...gle.com, amirv@...lanox.com, jackm@....mellanox.co.il,
	ogerlitz@...lanox.com
Subject: Re: [PATCH V1 net] net/mlx4_core: Preserve pci_dev_data after
 __mlx4_remove_one()

From: Wei Yang <weiyang@...ux.vnet.ibm.com>
Date: Thu, 10 Apr 2014 17:25:24 +0800

> pci_match_id() just match the static pci_device_id, which may return NULL if
> someone binds the driver to a device manually using
> /sys/bus/pci/drivers/.../new_id.
> 
> This patch wrap up a helper function __mlx4_remove_one() which does the tear
> down function but preserve the drv_data. Functions like
> mlx4_pci_err_detected() and mlx4_restart_one() will call this one with out
> releasing drvdata.
> 
> Fixes: 97a5221 "net/mlx4_core: pass pci_device_id.driver_data to __mlx4_init_one during reset".
> 
> CC: Bjorn Helgaas <bhelgaas@...gle.com>
> CC: Amir Vadai <amirv@...lanox.com>
> CC: Jack Morgenstein <jackm@....mellanox.co.il>
> CC: Or Gerlitz <ogerlitz@...lanox.com>
> Signed-off-by: Wei Yang <weiyang@...ux.vnet.ibm.com>
> 
> ---
> V0 --> V1:
>    1. zero the mlx4_priv at the end of __mlx4_remove_one
>    2. add a flag in mlx4_priv to mark it is released or not

This doesn't apply to the current 'net' tree, please respin.

And Jack, please do not place any leading spaces before your "Acked-by:",
patchwork will not parse it correctly and pick it up automatically for
me if you do that.

Thanks.
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