usb: acm: fix the computation of the number of data bits
The current code assumes that CSIZE is 0000060, which appears to be wrong on some arches (such as powerpc). Signed-off-by: NNicolas Boullis <nboullis@debian.org> Acked-by: NOliver Neukum <oneukum@suse.de> Cc: stable <stable@vger.kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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