dmaengine: uniphier-xdmac: Use readl_poll_timeout_atomic() in atomic state

The function uniphier_xdmac_chan_stop() is only called in atomic state.
Should use readl_poll_timeout_atomic() there instead of
readl_poll_timeout().

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 667b9251440b ("dmaengine: uniphier-xdmac: Add UniPhier external DMA controller driver")
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Link: https://lore.kernel.org/r/1627364852-28432-1-git-send-email-hayashi.kunihiko@socionext.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/uniphier-xdmac.c b/drivers/dma/uniphier-xdmac.c
index 16b19654873dfdddc94674cdc08670bd00107fcf..d6b8a202474f4a8f817da25fb689701538fa7460 100644 (file)
--- a/drivers/dma/uniphier-xdmac.c
+++ b/drivers/dma/uniphier-xdmac.c
@@ -209,8 +209,8 @@ static int uniphier_xdmac_chan_stop(struct uniphier_xdmac_chan *xc)
        writel(0, xc->reg_ch_base + XDMAC_TSS);
 
        /* wait until transfer is stopped */
-       return readl_poll_timeout(xc->reg_ch_base + XDMAC_STAT, val,
-                                 !(val & XDMAC_STAT_TENF), 100, 1000);
+       return readl_poll_timeout_atomic(xc->reg_ch_base + XDMAC_STAT, val,
+                                        !(val & XDMAC_STAT_TENF), 100, 1000);
 }
 
 /* xc->vc.lock must be held by caller */