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Subject[PATCH v2] PCI: dwc: Use {upper,lower}_32_bits() macros for clarity
Date
We have macros for getting the upper or lower 32 bits of a
number. Use them here to shave a couple lines off the code
and provide clarity.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---

Changes from v1:
* Update dw_msi_setup_msg() too
* Reword commit text slightly

drivers/pci/dwc/pcie-designware-host.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/pci/dwc/pcie-designware-host.c b/drivers/pci/dwc/pcie-designware-host.c
index 81e2157a7cfb..454b8d244071 100644
--- a/drivers/pci/dwc/pcie-designware-host.c
+++ b/drivers/pci/dwc/pcie-designware-host.c
@@ -89,10 +89,8 @@ void dw_pcie_msi_init(struct pcie_port *pp)
msi_target = virt_to_phys((void *)pp->msi_data);

/* program the msi_data */
- dw_pcie_wr_own_conf(pp, PCIE_MSI_ADDR_LO, 4,
- (u32)(msi_target & 0xffffffff));
- dw_pcie_wr_own_conf(pp, PCIE_MSI_ADDR_HI, 4,
- (u32)(msi_target >> 32 & 0xffffffff));
+ dw_pcie_wr_own_conf(pp, PCIE_MSI_ADDR_LO, 4, lower_32_bits(msi_target));
+ dw_pcie_wr_own_conf(pp, PCIE_MSI_ADDR_HI, 4, upper_32_bits(msi_target));
}

static void dw_pcie_msi_clear_irq(struct pcie_port *pp, int irq)
@@ -189,8 +187,8 @@ static void dw_msi_setup_msg(struct pcie_port *pp, unsigned int irq, u32 pos)
else
msi_target = virt_to_phys((void *)pp->msi_data);

- msg.address_lo = (u32)(msi_target & 0xffffffff);
- msg.address_hi = (u32)(msi_target >> 32 & 0xffffffff);
+ msg.address_lo = lower_32_bits(msi_target);
+ msg.address_hi = upper_32_bits(msi_target);

if (pp->ops->get_msi_data)
msg.data = pp->ops->get_msi_data(pp, pos);
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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