Re: [Patch] 2.4.28-pre3 tty/ldisc fixes

[Sergey Vlasov]

On Sat, Oct 30, 2004 at 11:19:55PM +0400, Sergey Vlasov wrote:
> On Fri, Oct 29, 2004 at 02:29:43PM -0400, Jason Baron wrote:
> > Here's an updated 2.4 tty patch. I'm not sure if the updated patch would 
> > fix the above issue, but it has a lot of changes so it might be worth a 
> > try.
> 
> This looks better - at least the system boots without hang or oops ;)

However, this seems to break SieFS 0.2
(http://mirror01.users.i.com.ua/~dmitry_z/siefs/; 0.4 is broken with
Siemens x55 models): even "slink i" does not work:

ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {c_iflags=0x5, c_oflags=0, c_cflags=0xebe, c_lflags=0, c_line=0, c_cc[VMIN]=0, c_cc[VTIME]=2, c_cc="\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"}) = 0
ioctl(3, SNDCTL_TMR_START or TCSETS, {c_iflags=0x5, c_oflags=0, c_cflags=0x1eb1, c_lflags=0, c_line=0, c_cc[VMIN]=0, c_cc[VTIME]=2, c_cc="\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"}) = 0
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {c_iflags=0x5, c_oflags=0, c_cflags=0x1eb1, c_lflags=0, c_line=0, c_cc[VMIN]=0, c_cc[VTIME]=2, c_cc="\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"}) = 0
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {c_iflags=0x5, c_oflags=0, c_cflags=0x1eb1, c_lflags=0, c_line=0, c_cc[VMIN]=0, c_cc[VTIME]=2, c_cc="\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"}) = 0
ioctl(3, SNDCTL_TMR_START or TCSETS, {c_iflags=0x5, c_oflags=0, c_cflags=0x1eb1, c_lflags=0, c_line=0, c_cc[VMIN]=0, c_cc[VTIME]=3, c_cc="\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"}) = 0
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {c_iflags=0x5, c_oflags=0, c_cflags=0x1eb1, c_lflags=0, c_line=0, c_cc[VMIN]=0, c_cc[VTIME]=3, c_cc="\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"}) = 0
write(3, "\2\1\3\24", 4)  = 4
read(3, "", 1)            = 0

There is no responce to the packet.  Without the tty patch SieFS
works; 2.6.9 (where locking fixes are already applied) also works.

The bug might really be in the pl2303 driver (the 2.4 version is
missing some patches which are in 2.6.x).  Will try to investigate
this further...

Attachment: pgp00000.pgp
Description: PGP signature