linux-kernel - [PATCH] soc: brcmstb: pm-arm: Remove duplicate/repeating constant

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Date:   Sat, 11 Feb 2023 14:08:01 +0530
From:   Deepak R Varma <drv@...lo.com>
To:     Florian Fainelli <f.fainelli@...il.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Saurabh Singh Sengar <ssengar@...rosoft.com>,
        Praveen Kumar <kumarpraveen@...ux.microsoft.com>,
        Deepak R Varma <drv@...lo.com>
Subject: [PATCH] soc: brcmstb: pm-arm: Remove duplicate/repeating constant

Constant DDR_PHY_RST_N is unnecessarily or'ed with itself. Remove
the redundant constant from the expression.
Issue identified using doublebitand.cocci Coccinelle semantic patch.

Signed-off-by: Deepak R Varma <drv@...lo.com>
---
Please note: I was unable to build the change though I had the appropriate
config, arch and  cross compiler. I used the following:
	.config = bmips_stb_defconfig
	ARCH=mips
	CROSS_COMPILE=/usr/bin/mips-linux-gnu-
	BRCMSTB_PM=y

Let me know what I missed so I can build the objects myself. Thank you.


 drivers/soc/bcm/brcmstb/pm/pm-arm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/soc/bcm/brcmstb/pm/pm-arm.c b/drivers/soc/bcm/brcmstb/pm/pm-arm.c
index d681cd24c6e1..633e715446f7 100644
--- a/drivers/soc/bcm/brcmstb/pm/pm-arm.c
+++ b/drivers/soc/bcm/brcmstb/pm/pm-arm.c
@@ -288,7 +288,7 @@ static inline void s5entry_method1(void)
 		/* Step 3: Channel A (RST_N = CKE = 0) */
 		tmp = readl_relaxed(ctrl.memcs[i].ddr_phy_base +
 				  ctrl.phy_a_standby_ctrl_offs);
-		tmp &= ~(DDR_PHY_RST_N | DDR_PHY_RST_N);
+		tmp &= ~DDR_PHY_RST_N;
 		writel_relaxed(tmp, ctrl.memcs[i].ddr_phy_base +
 			     ctrl.phy_a_standby_ctrl_offs);
 
@@ -296,7 +296,7 @@ static inline void s5entry_method1(void)
 		if (ctrl.phy_b_standby_ctrl_offs != DDR_PHY_NO_CHANNEL) {
 			tmp = readl_relaxed(ctrl.memcs[i].ddr_phy_base +
 					  ctrl.phy_b_standby_ctrl_offs);
-			tmp &= ~(DDR_PHY_RST_N | DDR_PHY_RST_N);
+			tmp &= ~DDR_PHY_RST_N;
 			writel_relaxed(tmp, ctrl.memcs[i].ddr_phy_base +
 				     ctrl.phy_b_standby_ctrl_offs);
 		}
-- 
2.34.1