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authorBjorn Helgaas <bjorn.helgaas@hp.com>2006-03-27 01:17:08 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-27 08:44:53 -0800
commit982c609448b9d724e1c3a0d5aeee388c064479f0 (patch)
tree8e402d45943ec27c0b93d2f5aeb376f6aa512215 /Documentation/pnp.txt
parent070c6999831dc4cfd9b07c74c2fea1964d7adfec (diff)
downloadlinux-linaro-stable-982c609448b9d724e1c3a0d5aeee388c064479f0.tar.gz
[PATCH] pnp: PNP: adjust pnp_register_driver signature
Remove the assumption that pnp_register_driver() returns the number of devices claimed. Returning the count is unreliable because devices may be hot-plugged in the future. This changes the convention to "zero for success, or a negative error value," which matches pci_register_driver(), acpi_bus_register_driver(), and platform_driver_register(). Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Adam Belay <ambx1@neo.rr.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/pnp.txt')
-rw-r--r--Documentation/pnp.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/pnp.txt b/Documentation/pnp.txt
index af0f6eabfa1c..9529c9c9fd59 100644
--- a/Documentation/pnp.txt
+++ b/Documentation/pnp.txt
@@ -115,6 +115,9 @@ pnp_unregister_protocol
pnp_register_driver
- adds a PnP driver to the Plug and Play Layer
- this includes driver model integration
+- returns zero for success or a negative error number for failure; count
+ calls to the .add() method if you need to know how many devices bind to
+ the driver
pnp_unregister_driver
- removes a PnP driver from the Plug and Play Layer