linux-kernel - [PATCH] PNP: isapnp: remove set but not used variable 'checksum'

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Message-ID: <20200103121710.4761-1-yukuai3@huawei.com>
Date:   Fri, 3 Jan 2020 20:17:10 +0800
From:   yu kuai <yukuai3@...wei.com>
To:     <perex@...ex.cz>, <rafael.j.wysocki@...el.com>
CC:     <linux-kernel@...r.kernel.org>, <yukuai3@...wei.com>,
        <yi.zhang@...wei.com>, <zhengbin13@...wei.com>
Subject: [PATCH] PNP: isapnp: remove set but not used variable 'checksum'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/pnp/isapnp/core.c: In function ‘isapnp_build_device_list’:
drivers/pnp/isapnp/core.c:777:27: warning: variable ‘checksum’ set
but not used [-Wunused-but-set-variable]

It is never used, and so can be removed.

Signed-off-by: yu kuai <yukuai3@...wei.com>
---
 drivers/pnp/isapnp/core.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/pnp/isapnp/core.c b/drivers/pnp/isapnp/core.c
index 179b737280e1..e39d49bceae0 100644
--- a/drivers/pnp/isapnp/core.c
+++ b/drivers/pnp/isapnp/core.c
@@ -774,7 +774,7 @@ static unsigned char __init isapnp_checksum(unsigned char *data)
 static int __init isapnp_build_device_list(void)
 {
 	int csn;
-	unsigned char header[9], checksum;
+	unsigned char header[9];
 	struct pnp_card *card;
 	u32 eisa_id;
 	char id[8];
@@ -784,7 +784,6 @@ static int __init isapnp_build_device_list(void)
 	for (csn = 1; csn <= isapnp_csn_count; csn++) {
 		isapnp_wake(csn);
 		isapnp_peek(header, 9);
-		checksum = isapnp_checksum(header);
 		eisa_id = header[0] | header[1] << 8 |
 			  header[2] << 16 | header[3] << 24;
 		pnp_eisa_id_to_string(eisa_id, id);
-- 
2.17.2