netdev - [PATCH net-next 5/7] net: sfp: provide a definition for the power level select bit

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Date:   Fri, 21 Oct 2022 16:09:59 +0100
From:   "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Andrew Lunn <andrew@...n.ch>, devicetree@...r.kernel.org,
        Eric Dumazet <edumazet@...gle.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        netdev@...r.kernel.org, Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>
Subject: [PATCH net-next 5/7] net: sfp: provide a definition for the power
 level select bit

Provide a named definition for the power level select bit in the
extended status register, rather than using BIT(0) in the code.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/phy/sfp.c | 6 +++---
 include/linux/sfp.h   | 2 ++
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index af676e28ba6a..16bce0ea68d9 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -1837,13 +1837,13 @@ static int sfp_sm_mod_hpower(struct sfp *sfp, bool enable)
 	 * all bytes 0xff) at 0x51 but does not accept writes.  In any case,
 	 * if the bit is already set, we're already in high power mode.
 	 */
-	if (!!(val & BIT(0)) == enable)
+	if (!!(val & SFP_EXT_STATUS_PWRLVL_SELECT) == enable)
 		return 0;
 
 	if (enable)
-		val |= BIT(0);
+		val |= SFP_EXT_STATUS_PWRLVL_SELECT;
 	else
-		val &= ~BIT(0);
+		val &= ~SFP_EXT_STATUS_PWRLVL_SELECT;
 
 	err = sfp_write(sfp, true, SFP_EXT_STATUS, &val, sizeof(val));
 	if (err != sizeof(val)) {
diff --git a/include/linux/sfp.h b/include/linux/sfp.h
index d1f343853b6c..01ae9f1dd2ad 100644
--- a/include/linux/sfp.h
+++ b/include/linux/sfp.h
@@ -489,6 +489,8 @@ enum {
 	SFP_WARN1_RXPWR_LOW		= BIT(6),
 
 	SFP_EXT_STATUS			= 0x76,
+	SFP_EXT_STATUS_PWRLVL_SELECT	= BIT(0),
+
 	SFP_VSL				= 0x78,
 	SFP_PAGE			= 0x7f,
 };
-- 
2.30.2