linux-kernel - [PATCH 4/5] firmware: google: memconsole: Drop global func pointer

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Message-Id: <20190510180151.115254-5-swboyd@chromium.org>
Date:   Fri, 10 May 2019 11:01:50 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org,
        Wei-Ning Huang <wnhuang@...omium.org>,
        Julius Werner <jwerner@...omium.org>,
        Brian Norris <briannorris@...omium.org>,
        Samuel Holland <samuel@...lland.org>,
        Guenter Roeck <groeck@...omium.org>
Subject: [PATCH 4/5] firmware: google: memconsole: Drop global func pointer

We can store this function pointer directly in the bin_attribute
structure's private field. Do this to save one global pointer.

Cc: Wei-Ning Huang <wnhuang@...omium.org>
Cc: Julius Werner <jwerner@...omium.org>
Cc: Brian Norris <briannorris@...omium.org>
Cc: Samuel Holland <samuel@...lland.org>
Cc: Guenter Roeck <groeck@...omium.org>
Signed-off-by: Stephen Boyd <swboyd@...omium.org>
---
 drivers/firmware/google/memconsole.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/firmware/google/memconsole.c b/drivers/firmware/google/memconsole.c
index 166f07c68c02..968135025e4f 100644
--- a/drivers/firmware/google/memconsole.c
+++ b/drivers/firmware/google/memconsole.c
@@ -22,14 +22,16 @@
 
 #include "memconsole.h"
 
-static ssize_t (*memconsole_read_func)(char *, loff_t, size_t);
-
 static ssize_t memconsole_read(struct file *filp, struct kobject *kobp,
 			       struct bin_attribute *bin_attr, char *buf,
 			       loff_t pos, size_t count)
 {
+	ssize_t (*memconsole_read_func)(char *, loff_t, size_t);
+
+	memconsole_read_func = bin_attr->private;
 	if (WARN_ON_ONCE(!memconsole_read_func))
 		return -EIO;
+
 	return memconsole_read_func(buf, pos, count);
 }
 
@@ -40,7 +42,7 @@ static struct bin_attribute memconsole_bin_attr = {
 
 void memconsole_setup(ssize_t (*read_func)(char *, loff_t, size_t))
 {
-	memconsole_read_func = read_func;
+	memconsole_bin_attr.private = read_func;
 }
 EXPORT_SYMBOL(memconsole_setup);
 
-- 
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