From 40a2945b97b4da9120653d84f1c3a58fe58be64c Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier.adi@gmail.com>
Date: Mon, 6 Apr 2009 19:00:38 -0700
Subject: [PATCH] Blackfin SPI Driver: do not check for SPI errors if DMA
itself did not flag any
We only need to check SPI error when DMA failes, cause that is the DMA IRQ
handling routine.
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
drivers/spi/spi_bfin5xx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
index 5acec9ff0175..5ebb67b011d0 100644
--- a/drivers/spi/spi_bfin5xx.c
+++ b/drivers/spi/spi_bfin5xx.c
@@ -587,7 +587,7 @@ static irqreturn_t dma_irq_handler(int irq, void *dev_id)
while (!(read_STAT(drv_data) & SPIF))
cpu_relax();
- if (spistat & RBSY) {
+ if ((dmastat & DMA_ERR) && (spistat & RBSY)) {
msg->state = ERROR_STATE;
dev_err(&drv_data->pdev->dev, "dma receive: fifo/buffer overflow\n");
} else {
--
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