[PATCH v2] PCI: rockchip: Add missing fields descriptions for struct rockchip_pcie_ep

[Damien Le Moal <dlemoal@kernel.org>]

When compiling the rockchip endpoint driver with -W=1, gcc output the
following warnings:

drivers/pci/controller/pcie-rockchip-ep.c:59: warning: Function parameter or struct member 'perst_irq' not described in 'rockchip_pcie_ep'
drivers/pci/controller/pcie-rockchip-ep.c:59: warning: Function parameter or struct member 'perst_asserted' not described in 'rockchip_pcie_ep'
drivers/pci/controller/pcie-rockchip-ep.c:59: warning: Function parameter or struct member 'link_up' not described in 'rockchip_pcie_ep'
drivers/pci/controller/pcie-rockchip-ep.c:59: warning: Function parameter or struct member 'link_training' not described in 'rockchip_pcie_ep'

Avoid these warnings by adding the missing field descriptions in
struct rockchip_pcie_ep kdoc comment.

Reported-by: Bjorn Helgaas <helgaas@kernel.org>
Fixes: a7137cbf6bd5 ("PCI: rockchip-ep: Handle PERST# signal in EP mode")
Fixes: bd6e61df4b2e ("PCI: rockchip-ep: Improve link training")
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
---
Changes from v1:
 - Addressed Manivannan's comments

 drivers/pci/controller/pcie-rockchip-ep.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/pci/controller/pcie-rockchip-ep.c b/drivers/pci/controller/pcie-rockchip-ep.c
index 1064b7b06cef..4f978a17fdbb 100644
--- a/drivers/pci/controller/pcie-rockchip-ep.c
+++ b/drivers/pci/controller/pcie-rockchip-ep.c
@@ -40,6 +40,10 @@
  * @irq_pci_fn: the latest PCI function that has updated the mapping of
  *		the MSI/INTX IRQ dedicated outbound region.
  * @irq_pending: bitmask of asserted INTX IRQs.
+ * @perst_irq: IRQ used for the PERST# signal.
+ * @perst_asserted: True if the PERST# signal was asserted.
+ * @link_up: True if the PCI link is up.
+ * @link_training: Work item to execute PCI link training.
  */
 struct rockchip_pcie_ep {
 	struct rockchip_pcie	rockchip;
-- 
2.47.1