From: Borislav Petkov <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
To: tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org
Cc: dougthompson-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org,
m.chehab-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
pawel.moll-5wv7dgnIgG8@public.gmane.org,
mark.rutland-5wv7dgnIgG8@public.gmane.org,
ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org,
galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org,
linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org,
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grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-edac-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
tthayer.linux-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Subject: Re: [PATCHv3 1/7] EDAC, altera: Check parent status for Arria10 EDAC block
Date: Fri, 17 Jun 2016 18:46:32 +0200 [thread overview]
Message-ID: <20160617164632.GD3912@pd.tnic> (raw)
In-Reply-To: <1465852752-11018-2-git-send-email-tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>
On Mon, Jun 13, 2016 at 04:19:06PM -0500, tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org wrote:
> From: Thor Thayer <tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>
>
> In preparation for the Arria10 ECC modules, check the status
> of the parent in the device tree to ensure the block is enabled.
> Skip if no parent phandle is set in the device tree.
>
> Signed-off-by: Thor Thayer <tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>
> ---
> v2 No change
> v3 Move check into validate_parent_available().
> ---
> drivers/edac/altera_edac.c | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c
> index 6f5d586..926bcaf 100644
> --- a/drivers/edac/altera_edac.c
> +++ b/drivers/edac/altera_edac.c
> @@ -1125,6 +1125,20 @@ static void altr_edac_a10_irq_handler(struct irq_desc *desc)
> chained_irq_exit(chip, desc);
> }
>
> +static int validate_parent_available(struct device_node *np)
> +{
> + struct device_node *parent;
> +
> + /* Ensure parent device is enabled if parent node exists */
> + parent = of_parse_phandle(np, "parent", 0);
> + if (parent && !of_device_is_available(parent)) {
> + of_node_put(parent);
> + return -ENODEV;
> + }
> + of_node_put(parent);
> + return 0;
> +}
How about this - it is a bit simpler:
static int validate_parent_available(struct device_node *np)
{
struct device_node *parent;
int ret = 0;
/* Ensure parent device is enabled if parent node exists */
parent = of_parse_phandle(np, "parent", 0);
if (parent && !of_device_is_available(parent))
ret = -ENODEV;
of_node_put(parent);
return ret;
}
?
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
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next prev parent reply other threads:[~2016-06-17 16:46 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-13 21:19 [PATCHv3 0/7] Add Ethernet EDAC & peripheral init functions tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx
[not found] ` <1465852752-11018-1-git-send-email-tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>
2016-06-13 21:19 ` [PATCHv3 1/7] EDAC, altera: Check parent status for Arria10 EDAC block tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx
[not found] ` <1465852752-11018-2-git-send-email-tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>
2016-06-17 16:46 ` Borislav Petkov [this message]
2016-06-17 16:54 ` Thor Thayer
2016-06-17 16:54 ` Borislav Petkov
2016-06-13 21:19 ` [PATCHv3 4/7] Documentation: dt: socfpga: Add Arria10 Ethernet binding tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx
[not found] ` <1465852752-11018-5-git-send-email-tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>
2016-06-16 18:39 ` Rob Herring
2016-06-16 19:12 ` Thor Thayer
2016-06-13 21:19 ` [PATCHv3 5/7] EDAC, altera: Add Arria10 ECC memory init functions tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx
2016-06-17 17:21 ` Borislav Petkov
2016-06-17 17:42 ` Thor Thayer
2016-06-13 21:19 ` [PATCHv3 2/7] EDAC, altera: Add panic flag check to A10 IRQ tthayer
2016-06-17 16:51 ` Borislav Petkov
2016-06-17 17:05 ` Thor Thayer
2016-06-17 17:02 ` Borislav Petkov
2016-06-17 17:11 ` Thor Thayer
2016-06-13 21:19 ` [PATCHv3 3/7] EDAC, altera: Share Arria10 check_deps & IRQ functions tthayer
2016-06-17 17:00 ` Borislav Petkov
2016-06-17 17:09 ` Thor Thayer
2016-06-17 17:11 ` Borislav Petkov
2016-06-17 17:37 ` Thor Thayer
2016-06-13 21:19 ` [PATCHv3 6/7] EDAC, altera: Add Arria10 Ethernet EDAC support tthayer
[not found] ` <1465852752-11018-7-git-send-email-tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>
2016-06-17 17:29 ` Borislav Petkov
2016-06-17 17:43 ` Thor Thayer
2016-06-13 21:19 ` [PATCHv3 7/7] ARM: dts: Add Arria10 Ethernet EDAC devicetree entry tthayer
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