On Sat, 17 Oct 2009, Julia Lawall wrote: > The file drivers/serial/jsm/jsm_neo.c contains the following code in the > function neo_parse_modem: > > jsm_printk(MSIGS, INFO, &ch->ch_bd->pci_dev, > "Port: %d DTR: %d RTS: %d CTS: %d DSR: %d " "RI: %d CD: %d\n", > ch->ch_portnum, > !!((ch->ch_mistat | ch->ch_mostat) & UART_MCR_DTR), > !!((ch->ch_mistat | ch->ch_mostat) & UART_MCR_RTS), > !!((ch->ch_mistat | ch->ch_mostat) & UART_MSR_CTS), > !!((ch->ch_mistat | ch->ch_mostat) & UART_MSR_DSR), > !!((ch->ch_mistat | ch->ch_mostat) & UART_MSR_RI), > !!((ch->ch_mistat | ch->ch_mostat) & UART_MSR_DCD)); > > The whole function uses constants with the name "UART_MSR_..." except for > the first two lines of this print statement, which uses constants with the > name "UART_MCR_...". Furthermore, UART_MCR_DTR is equivalent to > UART_MSR_DCTS and UART_MCR_RTS is equivalent to UART_MSR_DDSR. Is this > intentional? Hmm, maybe it is intentional because the | seems to be mixing both input (Status) and output (Control). julia -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
