path: root/Documentation/ide
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authorBartlomiej Zolnierkiewicz <>2008-04-18 00:46:23 +0200
committerBartlomiej Zolnierkiewicz <>2008-04-18 00:46:23 +0200
commitf74c91413ec6140ee0553180c5f56fdd27c22a2e (patch)
tree75ba3f7000ba290dc19b1523b12ab95dc5c7b1ea /Documentation/ide
parent50672e5d7486c9ab312432cbe180ac071f1de8e0 (diff)
ide: add warm-plug support for IDE devices (take 2)
* Add 'struct class ide_port_class' ('ide_port' class) and a 'struct device *portdev' ('ide_port' class device) in ide_hwif_t. * Register 'ide_port' class in ide_init() and unregister it in cleanup_module(). * Create ->portdev in ide_register_port () and unregister it in ide_unregister(). * Add "delete_devices" class device attribute for unregistering IDE devices on a port and "scan" one for probing+registering IDE devices on a port. * Add ide_sysfs_register_port() helper for registering "delete_devices" and "scan" attributes with ->portdev. Call it in ide_device_add_all(). * Document IDE warm-plug support in Documentation/ide/warm-plug-howto.txt. v2: * Convert patch from using 'struct class_device' to use 'struct device'. (thanks to Kay Sievers for doing it) Signed-off-by: Bartlomiej Zolnierkiewicz <>
Diffstat (limited to 'Documentation/ide')
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/ide/warm-plug-howto.txt b/Documentation/ide/warm-plug-howto.txt
new file mode 100644
index 000000000000..d5885468b072
--- /dev/null
+++ b/Documentation/ide/warm-plug-howto.txt
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+IDE warm-plug HOWTO
+To warm-plug devices on a port 'idex':
+# echo -n "1" > /sys/class/ide_port/idex/delete_devices
+unplug old device(s) and plug new device(s)
+# echo -n "1" > /sys/class/ide_port/idex/scan