HID: wacom: Fix several minor compiler warnings
[ Upstream commit 073b50bccbbf99a3b79a1913604c656d0e1a56c9 ] Addresses a few issues that were noticed when compiling with non-default warnings enabled. The trimmed-down warnings in the order they are fixed below are: * declaration of 'size' shadows a parameter * '%s' directive output may be truncated writing up to 5 bytes into a region of size between 1 and 64 * pointer targets in initialization of 'char *' from 'unsigned char *' differ in signedness * left shift of negative value Signed-off-by: NJason Gerecke <jason.gerecke@wacom.com> Reviewed-by: NAaron Armstrong Skomra <aaron.skomra@wacom.com> Signed-off-by: NJiri Kosina <jkosina@suse.cz> Signed-off-by: NSasha Levin <sashal@kernel.org>
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