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xen/pciback: miscellaneous adjustments

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This is a minor bugfix and a set of small cleanups; as it is not clear
whether this needs splitting into pieces (and if so, at what
granularity), it is a single combined patch.
- add a missing return statement to an error path in
  kill_domain_by_device()
- use pci_is_enabled() rather than raw atomic_read()
- remove a bogus attempt to zero-terminate an already zero-terminated
  string
- #define DRV_NAME once uniformly in the shared local header
- make DRIVER_ATTR() variables static
- eliminate a pointless use of list_for_each_entry_safe()
- add MODULE_ALIAS()
- a little bit of constification
- adjust a few messages
- remove stray semicolons from inline function definitions

Signed-off-by: Jan Beulich <jbeulich@suse.com>
[v1: Dropped the resource_size fix, altered the description]
[v2: Fixed cleanpatch.pl comments]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Jan Beulich
2011-09-21 16:22:11 -04:00
committed by Konrad Rzeszutek Wilk
parent 04df355227
commit 402c5e15b4
9 changed files with 44 additions and 44 deletions
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30
drivers/xen/xen-pciback/pciback.h
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@@ -15,6 +15,8 @@
#include <linux/atomic.h>
#include <xen/interface/io/pciif.h>
#define DRV_NAME "xen-pciback"
struct pci_dev_entry {
struct list_head list;
struct pci_dev *dev;
@@ -89,7 +91,7 @@ typedef int (*publish_pci_root_cb) (struct xen_pcibk_device *pdev,
* passthrough - BDFs are exactly like in the host.
*/
struct xen_pcibk_backend {
char *name;
const char *name;
int (*init)(struct xen_pcibk_device *pdev);
void (*free)(struct xen_pcibk_device *pdev);
int (*find)(struct pci_dev *pcidev, struct xen_pcibk_device *pdev,
@@ -104,9 +106,9 @@ struct xen_pcibk_backend {
unsigned int devfn);
};
extern struct xen_pcibk_backend xen_pcibk_vpci_backend;
extern struct xen_pcibk_backend xen_pcibk_passthrough_backend;
extern struct xen_pcibk_backend *xen_pcibk_backend;
extern const struct xen_pcibk_backend xen_pcibk_vpci_backend;
extern const struct xen_pcibk_backend xen_pcibk_passthrough_backend;
extern const struct xen_pcibk_backend *xen_pcibk_backend;
static inline int xen_pcibk_add_pci_dev(struct xen_pcibk_device *pdev,
struct pci_dev *dev,
@@ -116,13 +118,14 @@ static inline int xen_pcibk_add_pci_dev(struct xen_pcibk_device *pdev,
if (xen_pcibk_backend && xen_pcibk_backend->add)
return xen_pcibk_backend->add(pdev, dev, devid, publish_cb);
return -1;
};
}
static inline void xen_pcibk_release_pci_dev(struct xen_pcibk_device *pdev,
struct pci_dev *dev)
{
if (xen_pcibk_backend && xen_pcibk_backend->free)
return xen_pcibk_backend->release(pdev, dev);
};
}
static inline struct pci_dev *
xen_pcibk_get_pci_dev(struct xen_pcibk_device *pdev, unsigned int domain,
@@ -131,7 +134,8 @@ xen_pcibk_get_pci_dev(struct xen_pcibk_device *pdev, unsigned int domain,
if (xen_pcibk_backend && xen_pcibk_backend->get)
return xen_pcibk_backend->get(pdev, domain, bus, devfn);
return NULL;
};
}
/**
* Add for domain0 PCIE-AER handling. Get guest domain/bus/devfn in xen_pcibk
* before sending aer request to pcifront, so that guest could identify
@@ -148,25 +152,29 @@ static inline int xen_pcibk_get_pcifront_dev(struct pci_dev *pcidev,
return xen_pcibk_backend->find(pcidev, pdev, domain, bus,
devfn);
return -1;
};
}
static inline int xen_pcibk_init_devices(struct xen_pcibk_device *pdev)
{
if (xen_pcibk_backend && xen_pcibk_backend->init)
return xen_pcibk_backend->init(pdev);
return -1;
};
}
static inline int xen_pcibk_publish_pci_roots(struct xen_pcibk_device *pdev,
publish_pci_root_cb cb)
{
if (xen_pcibk_backend && xen_pcibk_backend->publish)
return xen_pcibk_backend->publish(pdev, cb);
return -1;
};
}
static inline void xen_pcibk_release_devices(struct xen_pcibk_device *pdev)
{
if (xen_pcibk_backend && xen_pcibk_backend->free)
return xen_pcibk_backend->free(pdev);
};
}
/* Handles events from front-end */
irqreturn_t xen_pcibk_handle_event(int irq, void *dev_id);
void xen_pcibk_do_op(struct work_struct *data);