USB: cdc-acm: signedness fix

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Fix bogus assignment of "unsigned char *" to "char *":  preserve
unsignedness.  These values are used directly as descriptor lengths
when iterating through the buffer, so this *could* cause oddness
that potentially includes oopsing.  (IMO not likely, except as
part of a malicious device...)

Fix the bogus warning in CDC ACM which highlighted this problem
(by showing a negative descriptor type).  It uses the undesirable
legacy err() for something that's not even an error; switch to
use dev_dbg, and show descriptor types in hex notation to match
the convention for such codes.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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David Brownell 2008-04-13 14:00:44 -07:00 • committed by Greg Kroah-Hartman

parent 08177e12b7

commit c6dbf554bc

1 changed files with 7 additions and 3 deletions

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drivers/usb/class/cdc-acm.c

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