linux-kernel - [PATCH 2/7] net: wan: lmc: remove unused DELAY()

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Date:   Fri, 15 Apr 2022 14:08:12 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Richard Henderson <rth@...ddle.net>,
        Ivan Kokshaysky <ink@...assic.park.msu.ru>,
        Matt Turner <mattst88@...il.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>,
        Chas Williams <3chas3@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     linux-alpha@...r.kernel.org, linux-ia64@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-sh@...r.kernel.org,
        linux-atm-general@...ts.sourceforge.net, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>
Subject: [PATCH 2/7] net: wan: lmc: remove unused DELAY()

From: Bjorn Helgaas <bhelgaas@...gle.com>

lmc_var.h is included only by files in drivers/net/wan/lmc/, and none of
them uses DELAY().  Remove the unused definition and related comments.

Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
---
 drivers/net/wan/lmc/lmc_main.c | 8 --------
 drivers/net/wan/lmc/lmc_var.h  | 8 --------
 2 files changed, 16 deletions(-)

diff --git a/drivers/net/wan/lmc/lmc_main.c b/drivers/net/wan/lmc/lmc_main.c
index 76c6b4f89890..45b2d25782ed 100644
--- a/drivers/net/wan/lmc/lmc_main.c
+++ b/drivers/net/wan/lmc/lmc_main.c
@@ -1669,21 +1669,17 @@ unsigned lmc_mii_readreg (lmc_softc_t * const sc, unsigned devaddr, unsigned reg
 
         LMC_CSR_WRITE (sc, csr_9, dataval);
         lmc_delay ();
-        /* __SLOW_DOWN_IO; */
         LMC_CSR_WRITE (sc, csr_9, dataval | 0x10000);
         lmc_delay ();
-        /* __SLOW_DOWN_IO; */
     }
 
     for (i = 19; i > 0; i--)
     {
         LMC_CSR_WRITE (sc, csr_9, 0x40000);
         lmc_delay ();
-        /* __SLOW_DOWN_IO; */
         retval = (retval << 1) | ((LMC_CSR_READ (sc, csr_9) & 0x80000) ? 1 : 0);
         LMC_CSR_WRITE (sc, csr_9, 0x40000 | 0x10000);
         lmc_delay ();
-        /* __SLOW_DOWN_IO; */
     }
 
     return (retval >> 1) & 0xffff;
@@ -1708,10 +1704,8 @@ void lmc_mii_writereg (lmc_softc_t * const sc, unsigned devaddr, unsigned regno,
 
         LMC_CSR_WRITE (sc, csr_9, datav);
         lmc_delay ();
-        /* __SLOW_DOWN_IO; */
         LMC_CSR_WRITE (sc, csr_9, (datav | 0x10000));
         lmc_delay ();
-        /* __SLOW_DOWN_IO; */
         i--;
     }
 
@@ -1720,10 +1714,8 @@ void lmc_mii_writereg (lmc_softc_t * const sc, unsigned devaddr, unsigned regno,
     {
         LMC_CSR_WRITE (sc, csr_9, 0x40000);
         lmc_delay ();
-        /* __SLOW_DOWN_IO; */
         LMC_CSR_WRITE (sc, csr_9, 0x50000);
         lmc_delay ();
-        /* __SLOW_DOWN_IO; */
         i--;
     }
 }
diff --git a/drivers/net/wan/lmc/lmc_var.h b/drivers/net/wan/lmc/lmc_var.h
index 99f0aa787a35..cf824bb1932c 100644
--- a/drivers/net/wan/lmc/lmc_var.h
+++ b/drivers/net/wan/lmc/lmc_var.h
@@ -44,14 +44,6 @@ typedef struct lmc___ctl lmc_ctl_t;
 #define LMC_CSR_WRITE(sc, reg, val) \
 	outl((val), (sc)->lmc_csrs.reg)
 
-//#ifdef _LINUX_DELAY_H
-//	#define SLOW_DOWN_IO udelay(2);
-//	#undef __SLOW_DOWN_IO
-//	#define __SLOW_DOWN_IO udelay(2);
-//#endif
-
-#define DELAY(n) SLOW_DOWN_IO
-
 #define lmc_delay() inl(sc->lmc_csrs.csr_9)
 
 /* This macro sync's up with the mii so that reads and writes can take place */
-- 
2.25.1