diff options
Diffstat (limited to 'recipes/linux/linux-gumstix-2.6.15/bugfix-serial-interrupt.patch')
| -rw-r--r-- | recipes/linux/linux-gumstix-2.6.15/bugfix-serial-interrupt.patch | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/recipes/linux/linux-gumstix-2.6.15/bugfix-serial-interrupt.patch b/recipes/linux/linux-gumstix-2.6.15/bugfix-serial-interrupt.patch new file mode 100644 index 0000000000..df4a46e030 --- /dev/null +++ b/recipes/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; + } + |