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@xxxxxxxxxx>
Fixes: 667b9251440b ("dmaengine: uniphier-xdmac: Add UniPhier external DMA controller driver")
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@xxxxxxxxxxxxx>
---
drivers/dma/uniphier-xdmac.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/uniphier-xdmac.c b/drivers/dma/uniphier-xdmac.c
index 16b1965..d6b8a20 100644
--- 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 */
--
2.7.4
