From 098f1c5e4a733beb33d0510819827785120c4533 Mon Sep 17 00:00:00 2001 From: Sonic Zhang Date: Fri, 29 Feb 2008 12:08:42 +0800 Subject: [PATCH] --- yaml --- r: 86567 b: refs/heads/master c: 0aef45645174525ee6aa7baed247a130e052740d h: refs/heads/master i: 86565: 6bf74aa07e1ab55439fa87016dd20c481c6c60cc 86563: c2cc1c7681e6878bd2b94575af9f8f598d963c6b 86559: 73670233299d4eb446ba2b0d02407ac55eca1daf v: v3 --- [refs] | 2 +- trunk/drivers/serial/bfin_5xx.c | 23 +++++++---------------- 2 files changed, 8 insertions(+), 17 deletions(-) diff --git a/[refs] b/[refs] index 103fc720068c..1acdccf5e9a3 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: 56f5de8fe7c127f6fb94b7a061d53090fd4a1c49 +refs/heads/master: 0aef45645174525ee6aa7baed247a130e052740d diff --git a/trunk/drivers/serial/bfin_5xx.c b/trunk/drivers/serial/bfin_5xx.c index 2a4117485799..0aa345b9a38b 100644 --- a/trunk/drivers/serial/bfin_5xx.c +++ b/trunk/drivers/serial/bfin_5xx.c @@ -48,7 +48,7 @@ #define DMA_RX_XCOUNT 512 #define DMA_RX_YCOUNT (PAGE_SIZE / DMA_RX_XCOUNT) -#define DMA_RX_FLUSH_JIFFIES 5 +#define DMA_RX_FLUSH_JIFFIES (HZ / 50) #ifdef CONFIG_SERIAL_BFIN_DMA static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart); @@ -393,7 +393,6 @@ static void bfin_serial_dma_tx_chars(struct bfin_serial_port *uart) { struct circ_buf *xmit = &uart->port.info->xmit; unsigned short ier; - int flags = 0; uart->tx_done = 0; @@ -491,9 +490,7 @@ static void bfin_serial_dma_rx_chars(struct bfin_serial_port *uart) void bfin_serial_rx_dma_timeout(struct bfin_serial_port *uart) { int x_pos, pos; - int flags = 0; - spin_lock_irqsave(&uart->port.lock, flags); uart->rx_dma_nrows = get_dma_curr_ycount(uart->rx_dma_channel); x_pos = get_dma_curr_xcount(uart->rx_dma_channel); uart->rx_dma_nrows = DMA_RX_YCOUNT - uart->rx_dma_nrows; @@ -509,7 +506,7 @@ void bfin_serial_rx_dma_timeout(struct bfin_serial_port *uart) bfin_serial_dma_rx_chars(uart); uart->rx_dma_buf.tail = uart->rx_dma_buf.head; } - spin_unlock_irqrestore(&uart->port.lock, flags); + uart->rx_dma_timer.expires = jiffies + DMA_RX_FLUSH_JIFFIES; add_timer(&(uart->rx_dma_timer)); } @@ -548,22 +545,16 @@ static irqreturn_t bfin_serial_dma_rx_int(int irq, void *dev_id) { struct bfin_serial_port *uart = dev_id; unsigned short irqstat; - int pos; - - uart->rx_dma_nrows = DMA_RX_YCOUNT - - get_dma_curr_ycount(uart->rx_dma_channel); - pos = DMA_RX_XCOUNT * uart->rx_dma_nrows; - if (pos != uart->rx_dma_buf.tail) { - uart->rx_dma_buf.head = pos; - bfin_serial_dma_rx_chars(uart); - uart->rx_dma_buf.tail = uart->rx_dma_buf.head; - } spin_lock(&uart->port.lock); irqstat = get_dma_curr_irqstat(uart->rx_dma_channel); clear_dma_irqstat(uart->rx_dma_channel); - spin_unlock(&uart->port.lock); + + del_timer(&(uart->rx_dma_timer)); + uart->rx_dma_timer.expires = jiffies; + add_timer(&(uart->rx_dma_timer)); + return IRQ_HANDLED; } #endif