staging: mt7621-pci: add clarification comment in 'mt7621_pcie_init_virtual_bridges'

Add a comment explaining a bit what is going on in this function.
It would be helfulp for other people for a better understanding
of the code.

Suggested-by: NeilBrown <neil@brown.name>
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20200413155018.31921-2-sergio.paracuellos@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/mt7621-pci/pci-mt7621.c b/drivers/staging/mt7621-pci/pci-mt7621.c
index 6a9f4b6..eede8d9 100644 (file)
--- a/drivers/staging/mt7621-pci/pci-mt7621.c
+++ b/drivers/staging/mt7621-pci/pci-mt7621.c
@@ -622,6 +622,11 @@ static int mt7621_pcie_init_virtual_bridges(struct mt7621_pcie *pcie)
        if (pcie_link_status == 0)
                return -1;
 
+       /*
+        * Assign device numbers from zero to the enabled ports,
+        * then assigning remaining device numbers to any disabled
+        * ports.
+        */
        n = 0;
        for (i = 0; i < PCIE_P2P_CNT; i++)
                if (pcie_link_status & BIT(i))