diff options
Diffstat (limited to 'packages/linux/linux-2.6.18/fix-usart3-rx-BUG.patch')
| -rw-r--r-- | packages/linux/linux-2.6.18/fix-usart3-rx-BUG.patch | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/packages/linux/linux-2.6.18/fix-usart3-rx-BUG.patch b/packages/linux/linux-2.6.18/fix-usart3-rx-BUG.patch new file mode 100644 index 0000000000..1035f9f010 --- /dev/null +++ b/packages/linux/linux-2.6.18/fix-usart3-rx-BUG.patch @@ -0,0 +1,25 @@ +--- + drivers/serial/atmel_usart.c | 10 ++++++++-- + 1 file changed, 8 insertions(+), 2 deletions(-) + +Index: linux-2.6.18-avr32/drivers/serial/atmel_usart.c +=================================================================== +--- linux-2.6.18-avr32.orig/drivers/serial/atmel_usart.c 2006-11-24 15:59:38.000000000 +0100 ++++ linux-2.6.18-avr32/drivers/serial/atmel_usart.c 2006-11-24 15:59:46.000000000 +0100 +@@ -194,8 +194,14 @@ static inline int rx_dma_update_tail(str + usart3_writel(up, RNCR, RX_BUFFER_SIZE); + + again = 1; +- } else +- BUG_ON(usart3_readl(up, CSR) & USART3_BIT(ENDRX)); ++ } else if(usart3_readl(up, CSR) & USART3_BIT(ENDRX)) { ++ /* ++ * The USART hit the end of the buffer after head was ++ * updated. Let's do another pass so that we can ++ * avoid taking another interrupt immediately. ++ */ ++ again = 1; ++ } + + up->rx_tail = tail; + |