[RFC,10/10,RFC,only] xen: pci: remove pcidev_lock() function

Commit Message

Volodymyr Babchuk Aug. 31, 2022, 2:11 p.m. UTC

This path will be squashed into "xen: pci: remove pcidev_[un]lock[ed]
calls" after we resolve "[RFC only] xen: iommu: remove last
pcidevs_lock() calls in iommu".

Signed-off-by: Volodymyr Babchuk <[e-mail]>
---
 xen/drivers/passthrough/pci.c | 18 ------------------
 xen/include/xen/pci.h         | 10 ----------
 2 files changed, 28 deletions(-)

Patch

diff --git a/xen/drivers/passthrough/pci.c b/xen/drivers/passthrough/pci.c
index cc62a5aec4..381eba3018 100644
--- a/xen/drivers/passthrough/pci.c
+++ b/xen/drivers/passthrough/pci.c
@@ -50,24 +50,6 @@  struct pci_seg {
         u8 devfn;
     } bus2bridge[MAX_BUSES];
 };
-
-static spinlock_t _pcidevs_lock = SPIN_LOCK_UNLOCKED;
-
-void pcidevs_lock(void)
-{
-    spin_lock_recursive(&_pcidevs_lock);
-}
-
-void pcidevs_unlock(void)
-{
-    spin_unlock_recursive(&_pcidevs_lock);
-}
-
-bool_t pcidevs_locked(void)
-{
-    return !!spin_is_locked(&_pcidevs_lock);
-}
-
 static struct radix_tree_root pci_segments;
 
 static inline struct pci_seg *get_pseg(u16 seg)
diff --git a/xen/include/xen/pci.h b/xen/include/xen/pci.h
index d0a7339d84..0abc54ea39 100644
--- a/xen/include/xen/pci.h
+++ b/xen/include/xen/pci.h
@@ -156,16 +156,6 @@  struct pci_dev {
 
 #define has_arch_pdevs(d) (!list_empty(&(d)->pdev_list))
 
-/*
- * The pcidevs_lock protect alldevs_list, and the assignment for the 
- * devices, it also sync the access to the msi capability that is not
- * interrupt handling related (the mask bit register).
- */
-
-void pcidevs_lock(void);
-void pcidevs_unlock(void);
-bool_t __must_check pcidevs_locked(void);
-
 /*
  * Acquire and release reference to the given device. Holding
  * reference ensures that device will not disappear under feet, but