linux-kernel - [PATCH] drivers: applicom: remove set but not used variable 'byte_reset

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Date:   Tue, 21 Jul 2020 16:41:07 +0800
From:   Zheng Yongjun <zhengyongjun3@...wei.com>
To:     <arnd@...db.de>, <gregkh@...uxfoundation.org>
CC:     <linux-kernel@...r.kernel.org>,
        Zheng Yongjun <zhengyongjun3@...wei.com>
Subject: [PATCH] drivers: applicom: remove set but not used variable 'byte_reset_it'

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

drivers/char/applicom.c: In function 'ac_register_board':
drivers/char/applicom.c:543: warning:
variable 'byte_reset_it' set but not used [-Wunused-but-set-variable]

Signed-off-by: Zheng Yongjun <zhengyongjun3@...wei.com>
---
 drivers/char/applicom.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/char/applicom.c b/drivers/char/applicom.c
index 14b2d8034c51..fd0b21607a7f 100644
--- a/drivers/char/applicom.c
+++ b/drivers/char/applicom.c
@@ -131,8 +131,6 @@ static int dummy;	/* dev_id for request_irq() */
 static int ac_register_board(unsigned long physloc, void __iomem *loc, 
 		      unsigned char boardno)
 {
-	volatile unsigned char byte_reset_it;
-
 	if((readb(loc + CONF_END_TEST)     != 0x00) ||
 	   (readb(loc + CONF_END_TEST + 1) != 0x55) ||
 	   (readb(loc + CONF_END_TEST + 2) != 0xAA) ||
@@ -160,7 +158,6 @@ static int ac_register_board(unsigned long physloc, void __iomem *loc,
 	apbs[boardno].RamIO = loc;
 	init_waitqueue_head(&apbs[boardno].FlagSleepSend);
 	spin_lock_init(&apbs[boardno].mutex);
-	byte_reset_it = readb(loc + RAM_IT_TO_PC);
 
 	numboards++;
 	return boardno + 1;
-- 
2.17.1