A: http://en.wikipedia.org/wiki/Top_post
Q: Were do I find info about this thing called top-posting?
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?
A: No.
Q: Should I include quotations after my reply?
http://daringfireball.net/2007/07/on_top
On Wed, Jun 16, 2021 at 03:29:11PM +0800, 赵振国 wrote:
Dear gregkh
1: Documentation/driver-api/serial/n_gsm.rst
The text introduces the config of master ( c.initiator = 1), but the
config of as responder is different.
when set gsm->initiator=0 by GSMIOC_SETCONF ,ngsm driver should be
responder(slaver)
config:
c.initiator = 0; // set initiator=0,ngsm as responder
ioctl(fd, GSMIOC_SETCONF, &c);
2: if master side send SABM/DISC frame data by uart dev
DLC0 control data frame:f9 03 3f 01 1c f9
kernel log: gsmld_receive: 00000000: f9 03 3f 01 1c f9
{
cr = gsm->address & 1; /* C/R bit */
//CR value=1
gsm_print_packet("<--", address, cr, gsm->control, gsm->buf, gsm->len);
cr ^= 1 - gsm->initiator; /* Flip so 1 always means command */
//when gsm->initiator is 0, CR value=0 by "^=" calculation
dlci = gsm->dlci[address];
switch (gsm->control) {
case SABM|PF:
if (cr == 0)
goto invalid; //if CR value=0,ngsm will goto
invalid,but the dlc0 control frame data is right,if we can't modify
,ngsm can't send UA response data
}
I am sorry, but I really do not understand what you are saying here.
Please resubmit your patch with an updated changelog that explains why
this change is needed and what it does.