From: Srinivas Neeli <srinivas.neeli@xxxxxxxxxx> Add check for NAPI poll function to avoid enabling interrupts with out completing the NAPI call. Link: https://lore.kernel.org/all/20220208162053.39896-1-srinivas.neeli@xxxxxxxxxx Signed-off-by: Srinivas Neeli <srinivas.neeli@xxxxxxxxxx> Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> --- drivers/net/can/xilinx_can.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/net/can/xilinx_can.c b/drivers/net/can/xilinx_can.c index 1674b561c9a2..e562c5ab1149 100644 --- a/drivers/net/can/xilinx_can.c +++ b/drivers/net/can/xilinx_can.c @@ -1215,10 +1215,11 @@ static int xcan_rx_poll(struct napi_struct *napi, int quota) } if (work_done < quota) { - napi_complete_done(napi, work_done); - ier = priv->read_reg(priv, XCAN_IER_OFFSET); - ier |= xcan_rx_int_mask(priv); - priv->write_reg(priv, XCAN_IER_OFFSET, ier); + if (napi_complete_done(napi, work_done)) { + ier = priv->read_reg(priv, XCAN_IER_OFFSET); + ier |= xcan_rx_int_mask(priv); + priv->write_reg(priv, XCAN_IER_OFFSET, ier); + } } return work_done; } -- 2.34.1
