PCI: designware: Use typical "for" loop idiom

It's conventional to use "for" rather than "while" for simple iteration.
No functional change.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

1 files changed, 2 insertions, 6 deletions

diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
index 5274085ecd4b..1c92833a4ed3 100644
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -214,8 +214,7 @@ static void clear_irq_range(struct pcie_port *pp, unsigned int irq_base,
 {
         unsigned int i, res, bit, val;
 
-        i = 0;
-        while (i < nvec) {
+        for (i = 0; i < nvec; i++) {
                 irq_set_msi_desc_off(irq_base, i, NULL);
                 clear_bit(pos + i, pp->msi_irq_in_use);
                 /* Disable corresponding interrupt on MSI interrupt controller */
@@ -224,7 +223,6 @@ static void clear_irq_range(struct pcie_port *pp, unsigned int irq_base,
                 dw_pcie_rd_own_conf(pp, PCIE_MSI_INTR0_ENABLE + res, 4, &val);
                 val &= ~(1 << bit);
                 dw_pcie_wr_own_conf(pp, PCIE_MSI_INTR0_ENABLE + res, 4, val);
-                ++i;
         }
 }
 
@@ -268,8 +266,7 @@ static int assign_irq(int no_irqs, struct msi_desc *desc, int *pos)
          * descs are also successfully allocated.
          */
 
-        i = 0;
-        while (i < no_irqs) {
+        for (i = 0; i < no_irqs; i++) {
                 if (irq_set_msi_desc_off(irq, i, desc) != 0) {
                         clear_irq_range(pp, irq, i, pos0);
                         goto no_valid_irq;
@@ -281,7 +278,6 @@ static int assign_irq(int no_irqs, struct msi_desc *desc, int *pos)
                 dw_pcie_rd_own_conf(pp, PCIE_MSI_INTR0_ENABLE + res, 4, &val);
                 val |= 1 << bit;
                 dw_pcie_wr_own_conf(pp, PCIE_MSI_INTR0_ENABLE + res, 4, val);
-                i++;
         }
 
         *pos = pos0;