[PATCH 2/3] dmaengine: imx-sdma: Use non-atomic __set_bit() for event_mask setup

[Peng Fan (OSS)]

From: Peng Fan <peng.fan at nxp.com>

In sdma_set_watermarklevel_for_p2p(), the event_mask[] fields are zeroed
in sdma_config_channel() right before this function is called, and the
channel has already been disabled. There is no concurrent access to
event_mask at this point, so replace set_bit() with __set_bit().

Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
 drivers/dma/imx-sdma.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 36368835a845c..63261ab6402b9 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1241,8 +1241,8 @@ static void sdma_set_watermarklevel_for_p2p(struct sdma_channel *sdmac)
 	int lwml = sdmac->watermark_level & SDMA_WATERMARK_LEVEL_LWML;
 	int hwml = (sdmac->watermark_level & SDMA_WATERMARK_LEVEL_HWML) >> 16;
 
-	set_bit(sdmac->event_id0 % 32, &sdmac->event_mask[1]);
-	set_bit(sdmac->event_id1 % 32, &sdmac->event_mask[0]);
+	__set_bit(sdmac->event_id0 % 32, &sdmac->event_mask[1]);
+	__set_bit(sdmac->event_id1 % 32, &sdmac->event_mask[0]);
 
 	if (sdmac->event_id0 > 31)
 		sdmac->watermark_level |= SDMA_WATERMARK_LEVEL_LWE;

-- 
2.34.1