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From: marek.vasut@gmail.com
To: linux-pci@vger.kernel.org
Cc: Marek Vasut <marek.vasut+renesas@gmail.com>,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	Phil Edworthy <phil.edworthy@renesas.com>,
	Simon Horman <horms+renesas@verge.net.au>,
	Wolfram Sang <wsa@the-dreams.de>,
	linux-renesas-soc@vger.kernel.org,
	Wolfram Sang <wsa+renesas@sang-engineering.com>
Subject: [PATCH V3 4/6] PCI: rcar: Replace (8 * n) with (n << 3)
Date: Sat, 23 Mar 2019 02:53:57 +0100	[thread overview]
Message-ID: <20190323015359.7231-4-marek.vasut@gmail.com> (raw)
In-Reply-To: <20190323015359.7231-1-marek.vasut@gmail.com>

From: Marek Vasut <marek.vasut+renesas@gmail.com>

Replace (8 * n) with (n << 3) to make bit shift operations consistent.
No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Phil Edworthy <phil.edworthy@renesas.com>
Cc: Simon Horman <horms+renesas@verge.net.au>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: linux-renesas-soc@vger.kernel.org
To: linux-pci@vger.kernel.org
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
V2: Bundle this patch with other cleanups before resending
V3: Add Wolfram's R-B
---
 drivers/pci/controller/pcie-rcar.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/pci/controller/pcie-rcar.c b/drivers/pci/controller/pcie-rcar.c
index a2d3855b15ea..f835e4341590 100644
--- a/drivers/pci/controller/pcie-rcar.c
+++ b/drivers/pci/controller/pcie-rcar.c
@@ -169,7 +169,7 @@ enum {
 
 static void rcar_rmw32(struct rcar_pcie *pcie, int where, u32 mask, u32 data)
 {
-	unsigned int shift = 8 * (where & 3);
+	unsigned int shift = (where & 3) << 3;
 	u32 val = rcar_pci_read_reg(pcie, where & ~3);
 
 	val &= ~(mask << shift);
@@ -179,7 +179,7 @@ static void rcar_rmw32(struct rcar_pcie *pcie, int where, u32 mask, u32 data)
 
 static u32 rcar_read_conf(struct rcar_pcie *pcie, int where)
 {
-	unsigned int shift = 8 * (where & 3);
+	unsigned int shift = (where & 3) << 3;
 	u32 val = rcar_pci_read_reg(pcie, where & ~3);
 
 	return val >> shift;
@@ -280,9 +280,9 @@ static int rcar_pcie_read_conf(struct pci_bus *bus, unsigned int devfn,
 	}
 
 	if (size == 1)
-		*val = (*val >> (8 * (where & 3))) & 0xff;
+		*val = (*val >> ((where & 3) << 3)) & 0xff;
 	else if (size == 2)
-		*val = (*val >> (8 * (where & 2))) & 0xffff;
+		*val = (*val >> ((where & 2) << 3)) & 0xffff;
 
 	dev_dbg(&bus->dev, "pcie-config-read: bus=%3d devfn=0x%04x where=0x%04x size=%d val=0x%08lx\n",
 		bus->number, devfn, where, size, (unsigned long)*val);
@@ -308,11 +308,11 @@ static int rcar_pcie_write_conf(struct pci_bus *bus, unsigned int devfn,
 		bus->number, devfn, where, size, (unsigned long)val);
 
 	if (size == 1) {
-		shift = 8 * (where & 3);
+		shift = (where & 3) << 3;
 		data &= ~(0xff << shift);
 		data |= ((val & 0xff) << shift);
 	} else if (size == 2) {
-		shift = 8 * (where & 2);
+		shift = (where & 2) << 3;
 		data &= ~(0xffff << shift);
 		data |= ((val & 0xffff) << shift);
 	} else
-- 
2.20.1


  parent reply	other threads:[~2019-03-23  1:54 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-23  1:53 [PATCH V3 1/6] PCI: rcar: Clean up remaining macros defining bits marek.vasut
2019-03-23  1:53 ` [PATCH V3 2/6] PCI: rcar: Replace unsigned long with u32 in register accessors marek.vasut
2019-03-25  8:07   ` Geert Uytterhoeven
2019-03-25 11:24     ` Marek Vasut
2019-03-23  1:53 ` [PATCH V3 3/6] PCI: rcar: Replace various variable types with unsigned ones for register values marek.vasut
2019-03-25  8:14   ` Geert Uytterhoeven
2019-03-23  1:53 ` marek.vasut [this message]
2019-03-25  8:26   ` [PATCH V3 4/6] PCI: rcar: Replace (8 * n) with (n << 3) Geert Uytterhoeven
2019-03-25 11:34     ` Marek Vasut
2019-03-23  1:53 ` [PATCH V3 5/6] PCI: rcar: Clean up debug messages marek.vasut
2019-03-23  1:53 ` [PATCH V3 6/6] PCI: rcar: Fix 64bit MSI message address handling marek.vasut
2019-03-25  8:28   ` Geert Uytterhoeven
2019-03-25  8:03 ` [PATCH V3 1/6] PCI: rcar: Clean up remaining macros defining bits Geert Uytterhoeven

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