diff mbox

spi: hspi: fixup long delay time

Message ID 87k3ml8cgr.wl%kuninori.morimoto.gx@renesas.com (mailing list archive)
State Accepted
Headers show

Commit Message

Kuninori Morimoto May 27, 2013, 12:59 a.m. UTC 
Current HSPI driver is using msleep(20) on hspi_status_check_timeout(),
but it was too long delay for SPI device.
Bock-W board SPI access was too slow without this patch.
This patch uses udelay(10) for it.

Tested-by: Yusuke Goda <yusuke.goda.sx@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 drivers/spi/spi-sh-hspi.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Mark Brown May 27, 2013, 12:17 p.m. UTC | #1 
On Sun, May 26, 2013 at 05:59:20PM -0700, Kuninori Morimoto wrote:
> Current HSPI driver is using msleep(20) on hspi_status_check_timeout(),
> but it was too long delay for SPI device.
> Bock-W board SPI access was too slow without this patch.
> This patch uses udelay(10) for it.

Applied, thanks.
diff mbox

Patch

diff --git a/drivers/spi/spi-sh-hspi.c b/drivers/spi/spi-sh-hspi.c
index 60cfae5..eab593e 100644
--- a/drivers/spi/spi-sh-hspi.c
+++ b/drivers/spi/spi-sh-hspi.c
@@ -89,7 +89,7 @@  static int hspi_status_check_timeout(struct hspi_priv *hspi, u32 mask, u32 val)
 		if ((mask & hspi_read(hspi, SPSR)) == val)
 			return 0;
 
-		msleep(20);
+		udelay(10);
 	}
 
 	dev_err(hspi->dev, "timeout\n");