USB: composite: Fix bug: low byte of w_index is the usb interface number not the whole 2 bytes of w_index

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In some usb gadget driver, for example usb audio class device, the high
byte of w_index is the entity id and low byte is the interface number.
If we use the 2 bytes of w_index as the array number, we will get a
wrong pointer or NULL pointer.

This patch fixes this issue.

Signed-off-by: Bryan Wu <cooloney@kernel.org>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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Bryan Wu 2009-01-08 00:21:19 +08:00 • committed by Greg Kroah-Hartman

parent dd4dff8b03

commit 08889517b3

1 changed files with 4 additions and 3 deletions

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drivers/usb/gadget/composite.c

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