mirror of
https://git.openwrt.org/openwrt/openwrt.git
synced 2024-06-14 19:23:53 +02:00
cddd459140
Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release which was tagged LSDK-20.04-V5.4. https://source.codeaurora.org/external/qoriq/qoriq-components/linux/ For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in LSDK, port the dts patches from 4.14. The patches are sorted into the following categories: 301-arch-xxxx 302-dts-xxxx 303-core-xxxx 701-net-xxxx 801-audio-xxxx 802-can-xxxx 803-clock-xxxx 804-crypto-xxxx 805-display-xxxx 806-dma-xxxx 807-gpio-xxxx 808-i2c-xxxx 809-jailhouse-xxxx 810-keys-xxxx 811-kvm-xxxx 812-pcie-xxxx 813-pm-xxxx 814-qe-xxxx 815-sata-xxxx 816-sdhc-xxxx 817-spi-xxxx 818-thermal-xxxx 819-uart-xxxx 820-usb-xxxx 821-vfio-xxxx Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
64 lines
1.9 KiB
Diff
64 lines
1.9 KiB
Diff
From 5192fa99f0d267eb7bd1c79e556430ea8911ae38 Mon Sep 17 00:00:00 2001
|
|
From: Jan Kiszka <jan.kiszka@siemens.com>
|
|
Date: Sun, 4 Mar 2018 13:50:24 +0100
|
|
Subject: [PATCH] ivshmem-net: Refactor and comment ivshm_net_state_change
|
|
|
|
This should make the state transitioning logic clearer. Also avoid the
|
|
harmless but redundant netif_carrier_on/ivshm_net_run in RUN state.
|
|
|
|
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
|
|
(cherry picked from commit 8539efe70fbdf4a0bea75a97c1628fbb38b6590b)
|
|
---
|
|
drivers/net/ivshmem-net.c | 23 ++++++++++++++++++++---
|
|
1 file changed, 20 insertions(+), 3 deletions(-)
|
|
|
|
--- a/drivers/net/ivshmem-net.c
|
|
+++ b/drivers/net/ivshmem-net.c
|
|
@@ -575,14 +575,21 @@ static void ivshm_net_state_change(struc
|
|
struct net_device *ndev = in->napi.dev;
|
|
u32 rstate = readl(&in->ivshm_regs->rstate);
|
|
|
|
-
|
|
switch (in->lstate) {
|
|
case IVSHM_NET_STATE_RESET:
|
|
+ /*
|
|
+ * Wait for the remote to leave READY/RUN before transitioning
|
|
+ * to INIT.
|
|
+ */
|
|
if (rstate < IVSHM_NET_STATE_READY)
|
|
ivshm_net_set_state(in, IVSHM_NET_STATE_INIT);
|
|
break;
|
|
|
|
case IVSHM_NET_STATE_INIT:
|
|
+ /*
|
|
+ * Wait for the remote to leave RESET before performing the
|
|
+ * initialization and moving to READY.
|
|
+ */
|
|
if (rstate > IVSHM_NET_STATE_RESET) {
|
|
ivshm_net_init_queues(ndev);
|
|
ivshm_net_set_state(in, IVSHM_NET_STATE_READY);
|
|
@@ -594,11 +601,21 @@ static void ivshm_net_state_change(struc
|
|
break;
|
|
|
|
case IVSHM_NET_STATE_READY:
|
|
- case IVSHM_NET_STATE_RUN:
|
|
+ /*
|
|
+ * Link is up and we are running once the remote is in READY or
|
|
+ * RUN.
|
|
+ */
|
|
if (rstate >= IVSHM_NET_STATE_READY) {
|
|
netif_carrier_on(ndev);
|
|
ivshm_net_run(ndev);
|
|
- } else if (rstate == IVSHM_NET_STATE_RESET) {
|
|
+ break;
|
|
+ }
|
|
+ /* fall through */
|
|
+ case IVSHM_NET_STATE_RUN:
|
|
+ /*
|
|
+ * If the remote goes to RESET, we need to follow immediately.
|
|
+ */
|
|
+ if (rstate == IVSHM_NET_STATE_RESET) {
|
|
netif_carrier_off(ndev);
|
|
ivshm_net_do_stop(ndev);
|
|
}
|