diff options
author | David S. Miller <davem@davemloft.net> | 2008-06-10 02:22:26 -0700 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2008-06-10 02:22:26 -0700 |
commit | 65b53e4cc90e59936733b3b95b9451d2ca47528d (patch) | |
tree | 29932718192962671c48c3fd1ea017a6112459e8 /drivers/lguest/lguest_device.c | |
parent | 788c0a53164c05c5ccdb1472474372b72ba74644 (diff) | |
parent | 2e761e0532a784816e7e822dbaaece8c5d4be14d (diff) |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/tg3.c
drivers/net/wireless/rt2x00/rt2x00dev.c
net/mac80211/ieee80211_i.h
Diffstat (limited to 'drivers/lguest/lguest_device.c')
-rw-r--r-- | drivers/lguest/lguest_device.c | 25 |
1 files changed, 10 insertions, 15 deletions
diff --git a/drivers/lguest/lguest_device.c b/drivers/lguest/lguest_device.c index 8080249957a..1a8de57289e 100644 --- a/drivers/lguest/lguest_device.c +++ b/drivers/lguest/lguest_device.c @@ -20,14 +20,11 @@ /* The pointer to our (page) of device descriptions. */ static void *lguest_devices; -/* Unique numbering for lguest devices. */ -static unsigned int dev_index; - /* For Guests, device memory can be used as normal memory, so we cast away the * __iomem to quieten sparse. */ static inline void *lguest_map(unsigned long phys_addr, unsigned long pages) { - return (__force void *)ioremap(phys_addr, PAGE_SIZE*pages); + return (__force void *)ioremap_cache(phys_addr, PAGE_SIZE*pages); } static inline void lguest_unmap(void *addr) @@ -325,8 +322,10 @@ static struct device lguest_root = { * As Andrew Tridgell says, "Untested code is buggy code". * * It's worth reading this carefully: we start with a pointer to the new device - * descriptor in the "lguest_devices" page. */ -static void add_lguest_device(struct lguest_device_desc *d) + * descriptor in the "lguest_devices" page, and the offset into the device + * descriptor page so we can uniquely identify it if things go badly wrong. */ +static void add_lguest_device(struct lguest_device_desc *d, + unsigned int offset) { struct lguest_device *ldev; @@ -334,18 +333,14 @@ static void add_lguest_device(struct lguest_device_desc *d) * it. */ ldev = kzalloc(sizeof(*ldev), GFP_KERNEL); if (!ldev) { - printk(KERN_EMERG "Cannot allocate lguest dev %u\n", - dev_index++); + printk(KERN_EMERG "Cannot allocate lguest dev %u type %u\n", + offset, d->type); return; } /* This devices' parent is the lguest/ dir. */ ldev->vdev.dev.parent = &lguest_root; /* We have a unique device index thanks to the dev_index counter. */ - ldev->vdev.index = dev_index++; - /* The device type comes straight from the descriptor. There's also a - * device vendor field in the virtio_device struct, which we leave as - * 0. */ ldev->vdev.id.device = d->type; /* We have a simple set of routines for querying the device's * configuration information and setting its status. */ @@ -357,8 +352,8 @@ static void add_lguest_device(struct lguest_device_desc *d) * virtio_device and calls device_register(). This makes the bus * infrastructure look for a matching driver. */ if (register_virtio_device(&ldev->vdev) != 0) { - printk(KERN_ERR "Failed to register lguest device %u\n", - ldev->vdev.index); + printk(KERN_ERR "Failed to register lguest dev %u type %u\n", + offset, d->type); kfree(ldev); } } @@ -379,7 +374,7 @@ static void scan_devices(void) break; printk("Device at %i has size %u\n", i, desc_size(d)); - add_lguest_device(d); + add_lguest_device(d, i); } } |