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path: root/drivers/spi/spi-rockchip.c
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Diffstat (limited to 'drivers/spi/spi-rockchip.c')
-rw-r--r--drivers/spi/spi-rockchip.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index 540861ca2ba3..553b6b9d0222 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -600,6 +600,12 @@ static int rockchip_spi_transfer_one(
int ret;
bool use_dma;
+ /* Zero length transfers won't trigger an interrupt on completion */
+ if (!xfer->len) {
+ spi_finalize_current_transfer(ctlr);
+ return 1;
+ }
+
WARN_ON(readl_relaxed(rs->regs + ROCKCHIP_SPI_SSIENR) &&
(readl_relaxed(rs->regs + ROCKCHIP_SPI_SR) & SR_BUSY));