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From: Cristian Marussi <cristian.marussi@arm.com>
To: Borislav Petkov <bp@alien8.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v0 06/42] firmware: Check notifier registration return value
Date: Fri, 12 Nov 2021 18:43:32 +0000	[thread overview]
Message-ID: <20211112184332.GC6655@e120937-lin> (raw)
In-Reply-To: <20211108101157.15189-7-bp@alien8.de>

On Mon, Nov 08, 2021 at 11:11:21AM +0100, Borislav Petkov wrote:
> From: Borislav Petkov <bp@suse.de>
> 
> Avoid homegrown notifier registration checks.
> 
> No functional changes.
> 
> Signed-off-by: Borislav Petkov <bp@suse.de>
> Cc: linux-arm-kernel@lists.infradead.org
> ---

Hi Borislav,

same observations I made on ccree patch in this series holds here too.

Moreover you should use get_maintainer.pl script to properly Cc people
(reviewers/maintainers) beside mailing lists (I saw this by chance...):
as an additional note this patch also merges together two fixes for 2
completely different things (it should be split).

But, anyway, most of all, as said for ccree, I don't see the reason for
these kind of fixes given the internals of notifier core.

Thanks,
Cristian

>  drivers/firmware/arm_scmi/notify.c | 3 ++-
>  drivers/firmware/google/gsmi.c     | 6 ++++--
>  2 files changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/firmware/arm_scmi/notify.c b/drivers/firmware/arm_scmi/notify.c
> index 0efd20cd9d69..f4c42ac00c63 100644
> --- a/drivers/firmware/arm_scmi/notify.c
> +++ b/drivers/firmware/arm_scmi/notify.c
> @@ -1358,7 +1358,8 @@ static int scmi_notifier_register(const struct scmi_handle *handle,
>  	if (!hndl)
>  		return -EINVAL;
>  
> -	blocking_notifier_chain_register(&hndl->chain, nb);
> +	if (blocking_notifier_chain_register(&hndl->chain, nb))
> +		pr_warn("SCMI notifier already registered\n");
>  
>  	/* Enable events for not pending handlers */
>  	if (!IS_HNDL_PENDING(hndl)) {
> diff --git a/drivers/firmware/google/gsmi.c b/drivers/firmware/google/gsmi.c
> index adaa492c3d2d..a658e7c106c3 100644
> --- a/drivers/firmware/google/gsmi.c
> +++ b/drivers/firmware/google/gsmi.c
> @@ -1030,8 +1030,10 @@ static __init int gsmi_init(void)
>  
>  	register_reboot_notifier(&gsmi_reboot_notifier);
>  	register_die_notifier(&gsmi_die_notifier);
> -	atomic_notifier_chain_register(&panic_notifier_list,
> -				       &gsmi_panic_notifier);
> +
> +	if (atomic_notifier_chain_register(&panic_notifier_list,
> +					   &gsmi_panic_notifier))
> +		pr_warn("gsmi panic notifier already registered\n");
>  
>  	printk(KERN_INFO "gsmi version " DRIVER_VERSION " loaded\n");
>  
> -- 
> 2.29.2
> 
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2021-11-12 18:43 UTC|newest]

Thread overview: 77+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-08 10:11 [PATCH v0 00/42] notifiers: Return an error when callback is already registered Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 01/42] x86: Check notifier registration return value Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 02/42] xen/x86: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 03/42] impi: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 04/42] clk: renesas: " Borislav Petkov
2021-11-08 14:12   ` Geert Uytterhoeven
2021-11-08 10:11 ` [PATCH v0 05/42] dca: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 06/42] firmware: " Borislav Petkov
2021-11-12 18:43   ` Cristian Marussi [this message]
2021-11-08 10:11 ` [PATCH v0 07/42] drm/i915: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 08/42] Drivers: hv: vmbus: " Borislav Petkov
2021-11-08 11:16   ` Wei Liu
2021-11-08 11:39     ` Borislav Petkov
2021-11-08 11:45       ` Wei Liu
2021-11-08 12:08         ` Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 09/42] iio: proximity: cros_ec: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 10/42] leds: trigger: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 11/42] misc: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 12/42] ethernet: chelsio: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 13/42] power: reset: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 14/42] remoteproc: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 15/42] scsi: target: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 16/42] USB: " Borislav Petkov
2021-11-08 14:05   ` Alan Stern
2021-11-08 14:09     ` Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 17/42] drivers: video: " Borislav Petkov
2021-11-08 11:16   ` Wei Liu
2021-11-08 10:11 ` [PATCH v0 18/42] drivers/xen: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 19/42] kernel/hung_task: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 20/42] rcu: " Borislav Petkov
2021-11-08 16:53   ` Paul E. McKenney
2021-11-08 10:11 ` [PATCH v0 21/42] tracing: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 22/42] net: fib_notifier: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 23/42] ASoC: soc-jack: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 24/42] staging: olpc_dcon: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 25/42] arch/um: " Borislav Petkov
2021-11-08 10:23   ` Johannes Berg
2021-11-08 10:48     ` Borislav Petkov
2021-11-08 10:56       ` Johannes Berg
2021-11-08 10:11 ` [PATCH v0 26/42] alpha: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 27/42] bus: brcmstb_gisb: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 28/42] soc: bcm: brcmstb: pm: pm-arm: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 29/42] arm64: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 30/42] soc/tegra: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 31/42] parisc: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 32/42] macintosh/adb: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 33/42] mips: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 34/42] powerpc: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 35/42] sh: " Borislav Petkov
2021-11-08 13:31   ` Geert Uytterhoeven
2021-11-08 13:49     ` Borislav Petkov
2021-11-08 14:03       ` Geert Uytterhoeven
2021-11-08 14:48   ` Sergey Shtylyov
2021-11-08 10:11 ` [PATCH v0 36/42] s390: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 37/42] sparc: " Borislav Petkov
2021-11-08 19:59   ` David Miller
2021-11-08 10:11 ` [PATCH v0 38/42] xtensa: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 39/42] crypto: ccree - check " Borislav Petkov
2021-11-12 18:32   ` Cristian Marussi
2021-11-12 18:48     ` Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 40/42] EDAC/altera: Check " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 41/42] power: supply: ab8500: " Borislav Petkov
2021-11-08 10:11 ` [PATCH v0 42/42] notifier: Return an error when callback is already registered Borislav Petkov
2021-11-08 14:07   ` Geert Uytterhoeven
2021-11-08 14:21     ` Borislav Petkov
2021-11-08 15:25       ` Geert Uytterhoeven
2021-11-08 15:58         ` Borislav Petkov
2021-11-08 16:12           ` Geert Uytterhoeven
2021-11-08 16:21             ` Borislav Petkov
2021-11-08 20:59               ` Alan Stern
2021-11-08 21:18                 ` Borislav Petkov
2021-11-08 10:19 ` [PATCH v0 00/42] notifiers: " Borislav Petkov
2021-11-08 14:17   ` Alan Stern
2021-11-08 14:24     ` Borislav Petkov
2021-11-08 14:35       ` Borislav Petkov
2021-11-08 16:23         ` Steven Rostedt
2021-11-08 16:29           ` Borislav Petkov

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