diff mbox

[17/23,BUG] atmel-spi && DMA: OOPS if buffer > 4400 bytes

Message ID 1344952177-18385-18-git-send-email-richard.genoud@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Richard Genoud Aug. 14, 2012, 1:49 p.m. UTC 
this is just a quick and suboptimal workaround
---
 drivers/spi/spi-atmel.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
diff mbox

Patch

diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
index d629422..0899da2 100644
--- a/drivers/spi/spi-atmel.c
+++ b/drivers/spi/spi-atmel.c
@@ -638,7 +638,8 @@  static void atmel_spi_next_xfer(struct spi_master *master,
 
 	as->current_transfer = xfer;
 
-	if (atmel_spi_use_dma(xfer)) {
+	/* quick (and *really* not optimal) workaround for DMA BUG */
+	if (atmel_spi_use_dma(xfer) && (xfer->len < BUFFER_SIZE)) {
 		if (!atmel_spi_next_xfer_dma(master, xfer))
 			return;
 		else