redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

Subject: jsm driver fix for linuxpps support 

The jsm driver doesn't currently use the uart_handle_*_change helper
functions, which are the obvious place for things like linuxpps to tie
into (which it now does of course), and as a result the jsm driver can
not be used with linuxpps and anything else that ties into the
serial_core helper functions.  This patch adds calls to these helper
functions whenever the value they manage changes.  That actual storage
of the state is not modified since the jsm driver caches the current
settings (The 8250 driver reads them everytime a user asks for the
state), and only updates them whenever they change.

Signed-off-by: Len Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: Scott H Kilau <Scott_Kilau@digi.com>
Cc: Wendy Xiong <wendyx@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Len Sorensen 2007-05-08 00:26:33 -07:00 committed by Linus Torvalds
parent 3c04c27251
commit e97cb3e28c
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/serial/jsm/jsm_neo.c
View File

@ -581,8 +581,13 @@ static void neo_parse_modem(struct jsm_channel *ch, u8 signals)
return;
/* Scrub off lower bits. They signify delta's, which I don't care about */
msignals &= 0xf0;
/* Keep DDCD and DDSR though */
msignals &= 0xf8;
if (msignals & UART_MSR_DDCD)
uart_handle_dcd_change(&ch->uart_port, msignals & UART_MSR_DCD);
if (msignals & UART_MSR_DDSR)
uart_handle_cts_change(&ch->uart_port, msignals & UART_MSR_CTS);
if (msignals & UART_MSR_DCD)
ch->ch_mistat |= UART_MSR_DCD;
else