termios: Update due to API changes

Termios notifies now the driver about an inactive transmit with the
length argument set to zero.

5 files changed, 29 insertions, 18 deletions

diff --git a/c/src/lib/libcpu/powerpc/mpc55xx/esci/esci.c b/c/src/lib/libcpu/powerpc/mpc55xx/esci/esci.c
index d8f6c41423..f5467397bd 100644
--- a/c/src/lib/libcpu/powerpc/mpc55xx/esci/esci.c
+++ b/c/src/lib/libcpu/powerpc/mpc55xx/esci/esci.c
@@ -292,13 +292,12 @@ static int mpc55xx_esci_termios_poll_write( int minor, const char *out,
  */
 static int mpc55xx_esci_termios_write( int minor, const char *out, size_t n)
 {
-	mpc55xx_esci_driver_entry *e = &mpc55xx_esci_driver_table [minor];
-	rtems_interrupt_level level;
+	if (n > 0) {
+		mpc55xx_esci_driver_entry *e = &mpc55xx_esci_driver_table [minor];
 
-	rtems_interrupt_disable(level);
-	e->regs->DR.B.D = out [0];
-	e->transmit_in_progress = true;
-	rtems_interrupt_enable(level);
+		e->regs->DR.B.D = out [0];
+		e->transmit_in_progress = true;
+	}
 
 	return 0;
 }
diff --git a/c/src/lib/libcpu/powerpc/mpc5xx/console-generic/console-generic.c b/c/src/lib/libcpu/powerpc/mpc5xx/console-generic/console-generic.c
index f3e7ff081e..8f56c708a5 100644
--- a/c/src/lib/libcpu/powerpc/mpc5xx/console-generic/console-generic.c
+++ b/c/src/lib/libcpu/powerpc/mpc5xx/console-generic/console-generic.c
@@ -144,10 +144,13 @@ ssize_t m5xx_uart_write(
   size_t len
 )
 {
-  volatile m5xxSCIRegisters_t *regs = sci_descs[minor].regs;
+  if (len > 0) {
+    volatile m5xxSCIRegisters_t *regs = sci_descs[minor].regs;
+
+    regs->scdr = *buf;			/* start transmission */
+    regs->sccr1 |= QSMCM_SCI_TIE;		/* enable interrupt */
+  }
 
-  regs->scdr = *buf;			/* start transmission */
-  regs->sccr1 |= QSMCM_SCI_TIE;		/* enable interrupt */
   return 0;
 }
 
diff --git a/c/src/lib/libcpu/powerpc/mpc8260/console-generic/console-generic.c b/c/src/lib/libcpu/powerpc/mpc8260/console-generic/console-generic.c
index 1ae1dbedce..b43d95c83d 100644
--- a/c/src/lib/libcpu/powerpc/mpc8260/console-generic/console-generic.c
+++ b/c/src/lib/libcpu/powerpc/mpc8260/console-generic/console-generic.c
@@ -1090,12 +1090,15 @@ m8xx_uart_write(
   size_t len
 )
 {
-  while( (TxBd[minor]->status) & M8260_BD_READY );
+  if (len > 0) {
+    while( (TxBd[minor]->status) & M8260_BD_READY );
+
+    rtems_cache_flush_multiple_data_lines( buf, len );
+    TxBd[minor]->buffer = (char *) buf;
+    TxBd[minor]->length = len;
+    TxBd[minor]->status = M8260_BD_READY | M8260_BD_WRAP | M8260_BD_INTERRUPT;
+  }
 
-  rtems_cache_flush_multiple_data_lines( buf, len );
-  TxBd[minor]->buffer = (char *) buf;
-  TxBd[minor]->length = len;
-  TxBd[minor]->status = M8260_BD_READY | M8260_BD_WRAP | M8260_BD_INTERRUPT;
   return 0;
 }
 
diff --git a/c/src/lib/libcpu/powerpc/ppc403/console/console.c b/c/src/lib/libcpu/powerpc/ppc403/console/console.c
index 58d0138398..0e74879947 100644
--- a/c/src/lib/libcpu/powerpc/ppc403/console/console.c
+++ b/c/src/lib/libcpu/powerpc/ppc403/console/console.c
@@ -271,8 +271,11 @@ spiPollRead (int minor)
 static int
 spiInterruptWrite (int minor, const char *buf, int len)
 {
-  port->SPTB = *buf;           /* write char to send         */
-  port->SPTC |= TCRIntEnabled; /* always enable tx interrupt */
+  if (len > 0) {
+    port->SPTB = *buf;           /* write char to send         */
+    port->SPTC |= TCRIntEnabled; /* always enable tx interrupt */
+  }
+
   return 0;
 }
 
diff --git a/c/src/lib/libcpu/powerpc/ppc403/console/console405.c b/c/src/lib/libcpu/powerpc/ppc403/console/console405.c
index 033a9ef41e..206d209c82 100644
--- a/c/src/lib/libcpu/powerpc/ppc403/console/console405.c
+++ b/c/src/lib/libcpu/powerpc/ppc403/console/console405.c
@@ -296,8 +296,11 @@ spiStopRemoteTx (int minor)
 
 static ssize_t InterruptWrite (int minor, const char *buf, size_t len)
 {
-  port->IER |= IER_XMT;     /* always enable tx interrupt */
-  port->THR = *buf; 	    /* write char to send         */
+  if (len > 0) {
+    port->IER |= IER_XMT;     /* always enable tx interrupt */
+    port->THR = *buf; 	    /* write char to send         */
+  }
+
   return 0;
 }