[PATCH v1 5/5] PCI: tegra: Document map_lock and mask_lock usage

[Anand Moon <linux.amoon@gmail.com>]

Add comments to clarify the purpose of map_lock and mask_lock in the
tegra_msi structure. This addresses checkpatch.pl warnings about missing
comments for struct mutex and spinlock_t definitions, improving code
readability without functional changes.

CHECK: struct mutex definition without comment
+       struct mutex map_lock;

CHECK: spinlock_t definition without comment
+       spinlock_t mask_lock;

Cc: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
---
v1: new patch in this series.
---
 drivers/pci/controller/pci-tegra.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c
index 02cee0763396..24b6ae0f0035 100644
--- a/drivers/pci/controller/pci-tegra.c
+++ b/drivers/pci/controller/pci-tegra.c
@@ -270,7 +270,9 @@
 struct tegra_msi {
 	DECLARE_BITMAP(used, INT_PCI_MSI_NR);
 	struct irq_domain *domain;
+	/* Protects mapping operations */
 	struct mutex map_lock;
+	/* Guards interrupt mask updates */
 	spinlock_t mask_lock;
 	void *virt;
 	dma_addr_t phys;
-- 
2.50.1