From: "Andrew Jeffery" <andrew@aj.id.au>
To: "Joel Stanley" <joel@jms.id.au>, "Vijay Khemka" <vijaykhemka@fb.com>
Cc: linux-aspeed@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org,
Arnd Bergmann <arnd@arndb.de>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] soc: aspeed: lpc-ctrl: Fix probe error handling
Date: Fri, 21 Jun 2019 11:26:52 +0930 [thread overview]
Message-ID: <e321507a-13d1-4eb8-ac7a-53c75a9d9842@www.fastmail.com> (raw)
In-Reply-To: <20190620091738.14683-1-joel@jms.id.au>
On Thu, 20 Jun 2019, at 18:47, Joel Stanley wrote:
> gcc warns that a mising "flash" phandle node leads to undefined
> behavior later:
>
> drivers/soc/aspeed/aspeed-lpc-ctrl.c: In function
> 'aspeed_lpc_ctrl_probe':
> drivers/soc/aspeed/aspeed-lpc-ctrl.c:201:18: error: '*((void
> *)&resm+8)' may be used uninitialized in this function
> [-Werror=maybe-uninitialized]
>
> Only set the flash base and size if we find a phandle in the device
> tree.
Ugh, yeah. Not sure how I missed that. Thanks for fixing it.
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
>
> Reported-by: Arnd Bergmann <arnd@arndb.de>
> Signed-off-by: Joel Stanley <joel@jms.id.au>
> ---
> drivers/soc/aspeed/aspeed-lpc-ctrl.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/soc/aspeed/aspeed-lpc-ctrl.c
> b/drivers/soc/aspeed/aspeed-lpc-ctrl.c
> index aca13779764a..eee26c2d8b52 100644
> --- a/drivers/soc/aspeed/aspeed-lpc-ctrl.c
> +++ b/drivers/soc/aspeed/aspeed-lpc-ctrl.c
> @@ -223,10 +223,11 @@ static int aspeed_lpc_ctrl_probe(struct
> platform_device *pdev)
> dev_err(dev, "Couldn't address to resource for flash\n");
> return rc;
> }
> +
> + lpc_ctrl->pnor_size = resource_size(&resm);
> + lpc_ctrl->pnor_base = resm.start;
> }
>
> - lpc_ctrl->pnor_size = resource_size(&resm);
> - lpc_ctrl->pnor_base = resm.start;
>
> dev_set_drvdata(&pdev->dev, lpc_ctrl);
>
> --
> 2.20.1
>
>
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next prev parent reply other threads:[~2019-06-21 1:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-20 9:17 [PATCH] soc: aspeed: lpc-ctrl: Fix probe error handling Joel Stanley
2019-06-21 1:56 ` Andrew Jeffery [this message]
2019-06-21 16:56 ` Vijay Khemka
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