HID: Consolidate device existence checks in hiddev_ioctl

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Currently, if the device has been removed before hiddev_ioctl(),
the -EIO is returned. If it's removed while hiddev_ioctl() is in
progress, some commands are still processed fine, others
return -ENODEV. This change takes the "existancelock" before
processing ioctl commands and releases it at the end.
If the device has been removed, always returns -ENODEV.

Signed-off-by: Valentine Barshak <vbarshak@mvista.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

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Valentine Barshak 2010-12-06 18:16:11 +03:00 • committed by Jiri Kosina

parent 1a8e8fab79

commit 33d6eb570b

1 changed files with 103 additions and 184 deletions

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drivers/hid/usbhid/hiddev.c

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