TTY/n_gsm: potential double lock
In gsm_dlci_data_kick() we call gsm_dlci_data_sweep() with the "gsm->tx_lock" held so we can't lock it again inside gsm_dlci_data_sweep(). I removed that lock from and added one to gsmld_write_wakeup() instead. The sweep function is only called from those two places. Signed-off-by: NDan Carpenter <error27@gmail.com> Acked-by: NAlan Cox <alan@linux.intel.com> Cc: stable <stable@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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