From: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Date: Thu, 31 Jan 2019 18:17:07 +0000 (+0100)
Subject: PCI: dwc: Replace bit rotation operation (1 << bit) with BIT(bit)
X-Git-Tag: v5.4-rc1~1452^2~5^2~17
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=657722570a555c728c59f17f7825c812c124dc28;p=platform%2Fkernel%2Flinux-rpi.git

PCI: dwc: Replace bit rotation operation (1 << bit) with BIT(bit)

Replace bit rotation operation (1 << bit) with BIT(bit), which
simplifies code reading.

No functional change is intended.

Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Jingoo Han <jingoohan1@gmail.com>
---

diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index c550c4a..45ff5e4 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -164,7 +164,7 @@ static void dw_pci_bottom_mask(struct irq_data *d)
 		res = ctrl * MSI_REG_CTRL_BLOCK_SIZE;
 		bit = d->hwirq % MAX_MSI_IRQS_PER_CTRL;
 
-		pp->irq_mask[ctrl] |= (1 << bit);
+		pp->irq_mask[ctrl] |= BIT(bit);
 		dw_pcie_wr_own_conf(pp, PCIE_MSI_INTR0_MASK + res, 4,
 				    pp->irq_mask[ctrl]);
 	}
@@ -187,7 +187,7 @@ static void dw_pci_bottom_unmask(struct irq_data *d)
 		res = ctrl * MSI_REG_CTRL_BLOCK_SIZE;
 		bit = d->hwirq % MAX_MSI_IRQS_PER_CTRL;
 
-		pp->irq_mask[ctrl] &= ~(1 << bit);
+		pp->irq_mask[ctrl] &= ~BIT(bit);
 		dw_pcie_wr_own_conf(pp, PCIE_MSI_INTR0_MASK + res, 4,
 				    pp->irq_mask[ctrl]);
 	}
@@ -207,7 +207,7 @@ static void dw_pci_bottom_ack(struct irq_data *d)
 
 	raw_spin_lock_irqsave(&pp->lock, flags);
 
-	dw_pcie_wr_own_conf(pp, PCIE_MSI_INTR0_STATUS + res, 4, 1 << bit);
+	dw_pcie_wr_own_conf(pp, PCIE_MSI_INTR0_STATUS + res, 4, BIT(bit));
 
 	if (pp->ops->msi_irq_ack)
 		pp->ops->msi_irq_ack(d->hwirq, pp);