linux-kernel - [PATCH] ACPI / APEI: Convert timers to use timer

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Date:   Mon, 16 Oct 2017 16:21:35 -0700
From:   Kees Cook <keescook@...omium.org>
To:     "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>, Tony Luck <tony.luck@...el.com>,
        Borislav Petkov <bp@...en8.de>,
        Tyler Baicar <tbaicar@...eaurora.org>,
        Will Deacon <will.deacon@....com>,
        James Morse <james.morse@....com>,
        "Jonathan (Zhixiong) Zhang" <zjzhang@...eaurora.org>,
        Shiju Jose <shiju.jose@...wei.com>, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] ACPI / APEI: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc: Len Brown <lenb@...nel.org>
Cc: Tony Luck <tony.luck@...el.com>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Tyler Baicar <tbaicar@...eaurora.org>
Cc: Will Deacon <will.deacon@....com>
Cc: James Morse <james.morse@....com>
Cc: "Jonathan (Zhixiong) Zhang" <zjzhang@...eaurora.org>
Cc: Shiju Jose <shiju.jose@...wei.com>
Cc: linux-acpi@...r.kernel.org
Signed-off-by: Kees Cook <keescook@...omium.org>
---
 drivers/acpi/apei/ghes.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index 3c3a37b8503b..ebaa51ba8a22 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -774,9 +774,9 @@ static void ghes_add_timer(struct ghes *ghes)
 	add_timer(&ghes->timer);
 }
 
-static void ghes_poll_func(unsigned long data)
+static void ghes_poll_func(struct timer_list *t)
 {
-	struct ghes *ghes = (void *)data;
+	struct ghes *ghes = from_timer(ghes, t, timer);
 
 	ghes_proc(ghes);
 	if (!(ghes->flags & GHES_EXITING))
@@ -1147,8 +1147,7 @@ static int ghes_probe(struct platform_device *ghes_dev)
 
 	switch (generic->notify.type) {
 	case ACPI_HEST_NOTIFY_POLLED:
-		setup_deferrable_timer(&ghes->timer, ghes_poll_func,
-				       (unsigned long)ghes);
+		timer_setup(&ghes->timer, ghes_poll_func, TIMER_DEFERRABLE);
 		ghes_add_timer(ghes);
 		break;
 	case ACPI_HEST_NOTIFY_EXTERNAL:
-- 
2.7.4


-- 
Kees Cook
Pixel Security