xen/pci: address violations of MISRA C:2012 Rule 8.2

Add missing parameter names to address violations of MISRA C:2012
Rule 8.2. Furthermore, use C standard types to comply with XEN coding style.
No functional change.

Signed-off-by: Federico Serafini <federico.serafini@bugseng.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Jan Beulich <jbeulich@suse.com>

xen/drivers/passthrough/pci.c

@@ -104,9 +104,9 @@ static struct pci_seg *alloc_pseg(u16 seg)
 }
 
 static int pci_segments_iterate(
-    int (*handler)(struct pci_seg *, void *), void *arg)
+    int (*handler)(struct pci_seg *pseg, void *arg), void *arg)
 {
-    u16 seg = 0;
+    uint16_t seg = 0;
     int rc = 0;
 
     do {
@@ -1077,7 +1077,7 @@ int __init scan_pci_devices(void)
 
 struct setup_hwdom {
     struct domain *d;
-    int (*handler)(u8 devfn, struct pci_dev *);
+    int (*handler)(uint8_t devfn, struct pci_dev *pdev);
 };
 
 static void __hwdom_init setup_one_hwdom_device(const struct setup_hwdom *ctxt,
@@ -1157,7 +1157,7 @@ static int __hwdom_init cf_check _setup_hwdom_pci_devices(
 }
 
 void __hwdom_init setup_hwdom_pci_devices(
-    struct domain *d, int (*handler)(u8 devfn, struct pci_dev *))
+    struct domain *d, int (*handler)(uint8_t devfn, struct pci_dev *pdev))
 {
     struct setup_hwdom ctxt = { .d = d, .handler = handler };
 

xen/include/xen/pci.h

@@ -178,7 +178,8 @@ enum pdev_type pdev_type(u16 seg, u8 bus, u8 devfn);
 int find_upstream_bridge(u16 seg, u8 *bus, u8 *devfn, u8 *secbus);
 
 void setup_hwdom_pci_devices(struct domain *d,
-                            int (*handler)(u8 devfn, struct pci_dev *pdev));
+                             int (*handler)(uint8_t devfn,
+                                            struct pci_dev *pdev));
 int pci_release_devices(struct domain *d);
 void pci_segments_init(void);
 int pci_add_segment(u16 seg);