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Subject[PATCH] rio (This time with patch)
Hi alan,

This patches fixes several isues with the rio driver:

- Implemented breaks
- Fixed a DCD up/down crash
- Added kmalloc return value check

Sorry for the late moment we submit this: the DCD bug was very, very hard
to find.

Patrick

diff -u -r linux-2.2.18-pre24.clean/drivers/char/rio/rio_linux.c linux-2.2.18-pre24.rio_break/drivers/char/rio/rio_linux.c
--- linux-2.2.18-pre24.clean/drivers/char/rio/rio_linux.c Wed Nov 29 11:10:01 2000
+++ linux-2.2.18-pre24.rio_break/drivers/char/rio/rio_linux.c Fri Dec 1 09:33:23 2000
@@ -165,7 +165,7 @@
/* startuptime */ HZ*2, /* how long to wait for card to run */
/* slowcook */ 0, /* TRUE -> always use line disc. */
/* intrpolltime */ 1, /* The frequency of OUR polls */
- /* breakinterval */ 25, /* x10 mS */
+ /* breakinterval */ 25, /* x10 mS XXX: units seem to be 1ms not 10! -- REW*/
/* timer */ 10, /* mS */
/* RtaLoadBase */ 0x7000,
/* HostLoadBase */ 0x7C00,
@@ -205,11 +205,8 @@
static INT rio_fw_release(struct inode *inode, struct file *filp);
static int rio_init_drivers(void);

-
void my_hd (void *addr, int len);

-
-
static struct tty_driver rio_driver, rio_callout_driver;
static struct tty_driver rio_driver2, rio_callout_driver2;

@@ -458,7 +455,6 @@
func_enter ();

HostP = (struct Host*)ptr; /* &p->RIOHosts[(long)ptr]; */
-
rio_dprintk (RIO_DEBUG_IFLOW, "rio: enter rio_interrupt (%d/%d)\n",
irq, HostP->Ivec);

@@ -519,7 +515,7 @@

RIOServiceHost(p, HostP, irq);

- rio_dprintk ( RIO_DEBUG_IFLOW, "riointr() doing host %d type %d\n",
+ rio_dprintk ( RIO_DEBUG_IFLOW, "riointr() doing host %p type %d\n",
(int) ptr, HostP->Type);

clear_bit (RIO_BOARD_INTR_LOCK, &HostP->locks);
@@ -627,8 +623,12 @@
/* Nothing special here... */
static void rio_shutdown_port (void * ptr)
{
+ struct Port *PortP;
+
func_enter();

+ PortP = (struct Port *)ptr;
+ PortP->gs.tty = NULL;
#if 0
port->gs.flags &= ~ GS_ACTIVE;
if (!port->gs.tty) {
@@ -681,8 +681,14 @@
exit minicom. I expect an "oops". -- REW */
static void rio_hungup (void *ptr)
{
- func_enter ();
+ struct Port *PortP;
+
+ func_enter();
+
+ PortP = (struct Port *)ptr;
+ PortP->gs.tty = NULL;
rio_dec_mod_count ();
+
func_exit ();
}

@@ -706,9 +712,8 @@
PortP->gs.count = 0;
}

-
+ PortP->gs.tty = NULL;
rio_dec_mod_count ();
-
func_exit ();
}

@@ -756,10 +761,36 @@
(ival ? CLOCAL : 0);
}
break;
+
case TIOCGSERIAL:
if ((rc = verify_area(VERIFY_WRITE, (void *) arg,
sizeof(struct serial_struct))) == 0)
gs_getserial(&PortP->gs, (struct serial_struct *) arg);
+ break;
+ case TCSBRK:
+ if ( PortP->State & RIO_DELETED ) {
+ rio_dprintk (RIO_DEBUG_TTY, "BREAK on deleted RTA\n");
+ rc = -EIO;
+ } else {
+ if (RIOShortCommand(p, PortP, SBREAK, 2, 250) == RIO_FAIL) {
+ rio_dprintk (RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n");
+ rc = -EIO;
+ }
+ }
+ break;
+ case TCSBRKP:
+ if ( PortP->State & RIO_DELETED ) {
+ rio_dprintk (RIO_DEBUG_TTY, "BREAK on deleted RTA\n");
+ rc = -EIO;
+ } else {
+ int l;
+ l = arg?arg*100:250;
+ if (l > 255) l = 255;
+ if (RIOShortCommand(p, PortP, SBREAK, 2, arg?arg*100:250) == RIO_FAIL) {
+ rio_dprintk (RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n");
+ rc = -EIO;
+ }
+ }
break;
case TIOCSSERIAL:
if ((rc = verify_area(VERIFY_READ, (void *) arg,
diff -u -r linux-2.2.18-pre24.clean/drivers/char/rio/rio_linux.h linux-2.2.18-pre24.rio_break/drivers/char/rio/rio_linux.h
--- linux-2.2.18-pre24.clean/drivers/char/rio/rio_linux.h Wed Nov 29 11:10:01 2000
+++ linux-2.2.18-pre24.rio_break/drivers/char/rio/rio_linux.h Fri Dec 1 09:59:56 2000
@@ -165,7 +165,7 @@
#define rio_memcpy_fromio memcpy_fromio
#endif

-#define DEBUG
+#define DEBUG 1


/*
diff -u -r linux-2.2.18-pre24.clean/drivers/char/rio/riointr.c linux-2.2.18-pre24.rio_break/drivers/char/rio/riointr.c
--- linux-2.2.18-pre24.clean/drivers/char/rio/riointr.c Thu Oct 19 15:27:27 2000
+++ linux-2.2.18-pre24.rio_break/drivers/char/rio/riointr.c Fri Dec 1 09:25:16 2000
@@ -273,7 +273,7 @@
for ( host=0; host<p->RIONumHosts; host++ ) {
struct Host *HostP = &p->RIOHosts[host];

- rio_dprintk (RIO_DEBUG_INTR, "riointr() doing host %d type %d\n", host, HostP->Type);
+ rio_dprintk (RIO_DEBUG_INTR, "riointr() doing host %p type %d\n", host, HostP->Type);

switch( HostP->Type ) {
case RIO_AT:
diff -u -r linux-2.2.18-pre24.clean/drivers/char/rio/riotty.c linux-2.2.18-pre24.rio_break/drivers/char/rio/riotty.c
--- linux-2.2.18-pre24.clean/drivers/char/rio/riotty.c Wed Nov 29 11:10:02 2000
+++ linux-2.2.18-pre24.rio_break/drivers/char/rio/riotty.c Fri Dec 1 09:25:17 2000
@@ -95,7 +95,7 @@
#endif

static void RIOClearUp(struct Port *PortP);
-static int RIOShortCommand(struct rio_info *p, struct Port *PortP,
+int RIOShortCommand(struct rio_info *p, struct Port *PortP,
int command, int len, int arg);


@@ -509,6 +509,7 @@

rio_spin_unlock_irqrestore(&PortP->portSem, flags);
rio_dprintk (RIO_DEBUG_TTY, "Returning from open\n");
+
func_exit ();
return 0;
}
@@ -793,7 +794,7 @@
** Other values of len aren't allowed, and will cause
** a panic.
*/
-static int RIOShortCommand(struct rio_info *p, struct Port *PortP,
+int RIOShortCommand(struct rio_info *p, struct Port *PortP,
int command, int len, int arg)
{
PKT *PacketP;

-
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