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Message-ID: <81a72082-94ec-4011-1e54-3b278317a44e@deltatee.com>
Date: Thu, 15 Dec 2022 11:34:06 -0700
From: Logan Gunthorpe <logang@...tatee.com>
To: Bjorn Helgaas <helgaas@...nel.org>,
Kurt Schwemmer <kurt.schwemmer@...rosemi.com>
Cc: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [PATCH 2/2] PCI: switchtec: Remove useless assignments in
switchtec_dev_read()
On 2022-12-15 11:21, Bjorn Helgaas wrote:
> From: Bjorn Helgaas <bhelgaas@...gle.com>
>
> Some switchtec_dev_read() error cases assign to "rc", then branch to "out".
> But the code at "out" never uses "rc". Drop the useless assignments. No
> functional change intended.
Ah, hmm, yes. I think if copy_to_user() fails, the function should
probably return -EFAULT. So perhaps an unlock and specific return as is
done in previous conditions in the same function?
Thanks,
Logan
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