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Diffstat (limited to 'packages/linux/linux-gumstix-2.6.15/bugfix-serial-interrupt.patch')
-rw-r--r--packages/linux/linux-gumstix-2.6.15/bugfix-serial-interrupt.patch25
1 files changed, 25 insertions, 0 deletions
diff --git a/packages/linux/linux-gumstix-2.6.15/bugfix-serial-interrupt.patch b/packages/linux/linux-gumstix-2.6.15/bugfix-serial-interrupt.patch
new file mode 100644
index 0000000000..df4a46e030
--- /dev/null
+++ b/packages/linux/linux-gumstix-2.6.15/bugfix-serial-interrupt.patch
@@ -0,0 +1,25 @@
+Index: linux-2.6.15gum/drivers/serial/pxa.c
+===================================================================
+--- linux-2.6.15gum.orig/drivers/serial/pxa.c
++++ linux-2.6.15gum/drivers/serial/pxa.c
+@@ -246,15 +246,19 @@ serial_pxa_irq(int irq, void *dev_id, st
+ struct uart_pxa_port *up = (struct uart_pxa_port *)dev_id;
+ unsigned int iir, lsr;
+
++ serial_out(up, UART_MCR, serial_in(up, UART_MCR) & ~UART_MCR_RTS); // Clear RTS
+ iir = serial_in(up, UART_IIR);
+ if (iir & UART_IIR_NO_INT)
+- return IRQ_NONE;
++ {
++ //printk(KERN_WARNING "serial_pxa_irq: odd -- interrupt triggered, but no interrupt in IIR: %08x\n",iir);
++ }
+ lsr = serial_in(up, UART_LSR);
+ if (lsr & UART_LSR_DR)
+ receive_chars(up, &lsr, regs);
+ check_modem_status(up);
+ if (lsr & UART_LSR_THRE)
+ transmit_chars(up);
++ serial_out(up, UART_MCR, serial_in(up, UART_MCR) | UART_MCR_RTS); // Assert RTS
+ return IRQ_HANDLED;
+ }
+