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authorJeff Garzik <jeff@garzik.org>2006-10-11 01:22:23 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-11 11:14:25 -0700
commit49a6cbe1cd8a72451d9d6ab5b1e163f17c1bbee3 (patch)
tree519d69f7daef24f8258c0ca125e1da7344d3a81d
parent69b2186c5fcb335e29c558e3b4e410e1939b5cc8 (diff)
downloadlinux-49a6cbe1cd8a72451d9d6ab5b1e163f17c1bbee3.tar.bz2
[PATCH] drivers/mca: handle sysfs errors
Also includes a kmalloc->kzalloc cleanup. Signed-off-by: Jeff Garzik <jeff@garzik.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--drivers/mca/mca-bus.c28
1 files changed, 21 insertions, 7 deletions
diff --git a/drivers/mca/mca-bus.c b/drivers/mca/mca-bus.c
index 09baa43b2599..da862e4632dd 100644
--- a/drivers/mca/mca-bus.c
+++ b/drivers/mca/mca-bus.c
@@ -100,6 +100,7 @@ static DEVICE_ATTR(pos, S_IRUGO, mca_show_pos, NULL);
int __init mca_register_device(int bus, struct mca_device *mca_dev)
{
struct mca_bus *mca_bus = mca_root_busses[bus];
+ int rc;
mca_dev->dev.parent = &mca_bus->dev;
mca_dev->dev.bus = &mca_bus_type;
@@ -108,13 +109,23 @@ int __init mca_register_device(int bus, struct mca_device *mca_dev)
mca_dev->dev.dma_mask = &mca_dev->dma_mask;
mca_dev->dev.coherent_dma_mask = mca_dev->dma_mask;
- if (device_register(&mca_dev->dev))
- return 0;
+ rc = device_register(&mca_dev->dev);
+ if (rc)
+ goto err_out;
- device_create_file(&mca_dev->dev, &dev_attr_id);
- device_create_file(&mca_dev->dev, &dev_attr_pos);
+ rc = device_create_file(&mca_dev->dev, &dev_attr_id);
+ if (rc) goto err_out_devreg;
+ rc = device_create_file(&mca_dev->dev, &dev_attr_pos);
+ if (rc) goto err_out_id;
return 1;
+
+err_out_id:
+ device_remove_file(&mca_dev->dev, &dev_attr_id);
+err_out_devreg:
+ device_unregister(&mca_dev->dev);
+err_out:
+ return 0;
}
/* */
@@ -130,13 +141,16 @@ struct mca_bus * __devinit mca_attach_bus(int bus)
return NULL;
}
- mca_bus = kmalloc(sizeof(struct mca_bus), GFP_KERNEL);
+ mca_bus = kzalloc(sizeof(struct mca_bus), GFP_KERNEL);
if (!mca_bus)
return NULL;
- memset(mca_bus, 0, sizeof(struct mca_bus));
+
sprintf(mca_bus->dev.bus_id,"mca%d",bus);
sprintf(mca_bus->name,"Host %s MCA Bridge", bus ? "Secondary" : "Primary");
- device_register(&mca_bus->dev);
+ if (device_register(&mca_bus->dev)) {
+ kfree(mca_bus);
+ return NULL;
+ }
mca_root_busses[bus] = mca_bus;