From: Borislav Petkov <bp@alien8.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v0 06/42] firmware: Check notifier registration return value
Date: Mon, 8 Nov 2021 11:11:21 +0100 [thread overview]
Message-ID: <20211108101157.15189-7-bp@alien8.de> (raw)
In-Reply-To: <20211108101157.15189-1-bp@alien8.de>
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
---
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
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next parent reply other threads:[~2021-11-08 10:15 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20211108101157.15189-1-bp@alien8.de>
2021-11-08 10:11 ` Borislav Petkov [this message]
2021-11-12 18:43 ` [PATCH v0 06/42] firmware: Check notifier registration return value Cristian Marussi
2021-11-08 10:11 ` [PATCH v0 29/42] arm64: " 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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