linux-kernel - [RESEND PATCH v7] acpi: apei: remove the unused dead-code for SEA/NMI notification type

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Message-ID: <1508655253-20785-1-git-send-email-gengdongjiu@huawei.com>
Date:   Sun, 22 Oct 2017 14:54:13 +0800
From:   Dongjiu Geng <gengdongjiu@...wei.com>
To:     <rjw@...ysocki.net>, <bp@...e.de>, <lenb@...nel.org>,
        <tbaicar@...eaurora.org>, <will.deacon@....com>,
        <prarit@...hat.com>, <linux-acpi@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <gengdongjiu@...wei.com>
Subject: [RESEND PATCH v7] acpi: apei: remove the unused dead-code for SEA/NMI notification type

For the SEA notification, the two functions ghes_sea_add() and
ghes_sea_remove() are only called when CONFIG_ACPI_APEI_SEA
is defined. If not, it will return errors in the ghes_probe()
and not continue. If the probe is failed, the ghes_sea_remove()
also has no chance to be called. Hence, remove the unnecessary
handling when CONFIG_ACPI_APEI_SEA is not defined.

For the NMI notification, it has the same issue as SEA notification,
so also remove the unused dead-code for it.

Cc: Tyler Baicar <tbaicar@...eaurora.org>
Cc: James Morse <james.morse@....com>
Signed-off-by: Dongjiu Geng <gengdongjiu@...wei.com>
Tested-by: Tyler Baicar <tbaicar@...eaurora.org>
Reviewed-by: Borislav Petkov <bp@...e.de>
---
 drivers/acpi/apei/ghes.c | 33 +++++----------------------------
 1 file changed, 5 insertions(+), 28 deletions(-)

diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index d661d45..3eee30a 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -849,17 +849,8 @@ static void ghes_sea_remove(struct ghes *ghes)
 	synchronize_rcu();
 }
 #else /* CONFIG_ACPI_APEI_SEA */
-static inline void ghes_sea_add(struct ghes *ghes)
-{
-	pr_err(GHES_PFX "ID: %d, trying to add SEA notification which is not supported\n",
-	       ghes->generic->header.source_id);
-}
-
-static inline void ghes_sea_remove(struct ghes *ghes)
-{
-	pr_err(GHES_PFX "ID: %d, trying to remove SEA notification which is not supported\n",
-	       ghes->generic->header.source_id);
-}
+static inline void ghes_sea_add(struct ghes *ghes) { }
+static inline void ghes_sea_remove(struct ghes *ghes) { }
 #endif /* CONFIG_ACPI_APEI_SEA */
 
 #ifdef CONFIG_HAVE_ACPI_APEI_NMI
@@ -1061,23 +1052,9 @@ static void ghes_nmi_init_cxt(void)
 	init_irq_work(&ghes_proc_irq_work, ghes_proc_in_irq);
 }
 #else /* CONFIG_HAVE_ACPI_APEI_NMI */
-static inline void ghes_nmi_add(struct ghes *ghes)
-{
-	pr_err(GHES_PFX "ID: %d, trying to add NMI notification which is not supported!\n",
-	       ghes->generic->header.source_id);
-	BUG();
-}
-
-static inline void ghes_nmi_remove(struct ghes *ghes)
-{
-	pr_err(GHES_PFX "ID: %d, trying to remove NMI notification which is not supported!\n",
-	       ghes->generic->header.source_id);
-	BUG();
-}
-
-static inline void ghes_nmi_init_cxt(void)
-{
-}
+static inline void ghes_nmi_add(struct ghes *ghes) { }
+static inline void ghes_nmi_remove(struct ghes *ghes) { }
+static inline void ghes_nmi_init_cxt(void) { }
 #endif /* CONFIG_HAVE_ACPI_APEI_NMI */
 
 static int ghes_probe(struct platform_device *ghes_dev)
-- 
2.10.1