USB: serial: sierra driver bug fix for composite interface
This patch fixes a problem in sierra_send_setup() function when composite devices are used. One should not be sending ACM commands to interfaces that are OBEX. Doing this causes an apparent failure as the ACM command has to time out before the interface can start being used. Signed-off-by: NElina Pasheva <epasheva@sierrawireless.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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