[PATCH net-next v2 2/2] ibmvnic: remove unnecessary rmb() inside ibmvnic_poll
From: Lijun Pan <hidden>
Date: 2021-01-30 10:15:37
Subsystem:
ibm power sriov virtual nic device driver, linux for powerpc (32-bit and 64-bit), networking drivers, the rest · Maintainers:
Haren Myneni, Rick Lindsley, Madhavan Srinivasan, Michael Ellerman, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
rmb() can be removed since: 1. pending_scrq() has dma_rmb() at the function end; 2. dma_rmb(), though weaker, is enough here. Signed-off-by: Lijun Pan <redacted> Acked-by: Dwip Banerjee <redacted> Acked-by: Thomas Falcon <redacted> Reviewed-by: Brian King <redacted> --- drivers/net/ethernet/ibm/ibmvnic.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 331ebca2f57a..0ed169ef1cfc 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c@@ -2510,7 +2510,6 @@ static int ibmvnic_poll(struct napi_struct *napi, int budget) if (napi_complete_done(napi, frames_processed)) { enable_scrq_irq(adapter, rx_scrq); if (pending_scrq(adapter, rx_scrq)) { - rmb(); if (napi_reschedule(napi)) { disable_scrq_irq(adapter, rx_scrq); goto restart_poll;
--
2.23.0