| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | From 74de99b0e1df634949c45df1c370d458e6a3c98a Mon Sep 17 00:00:00 2001 |
| 2 | From: Jan Kiszka <jan.kiszka@siemens.com> |
| 3 | Date: Sun, 1 Jan 2017 15:54:55 +0100 |
| 4 | Subject: [PATCH] ivshmem-net: Fix stuck state machine during setup |
| 5 | |
| 6 | If the remote side is already in INIT state (or even higher) and has a |
| 7 | cached rstate of RESET, we won't make progress when signaling RESET |
| 8 | again because the remote side won't send a state update. Fix this by |
| 9 | enforcing a local check after probe completion. |
| 10 | |
| 11 | Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> |
| 12 | (cherry picked from commit fceed9d0ab2486589c57c0793fbfbca4832442b9) |
| 13 | --- |
| 14 | drivers/net/ivshmem-net.c | 1 + |
| 15 | 1 file changed, 1 insertion(+) |
| 16 | |
| 17 | --- a/drivers/net/ivshmem-net.c |
| 18 | +++ b/drivers/net/ivshmem-net.c |
| 19 | @@ -911,6 +911,7 @@ static int ivshm_net_probe(struct pci_de |
| 20 | writel(IVSHMEM_INTX_ENABLE, &in->ivshm_regs->intxctrl); |
| 21 | |
| 22 | writel(IVSHM_NET_STATE_RESET, &in->ivshm_regs->lstate); |
| 23 | + ivshm_net_check_state(ndev); |
| 24 | |
| 25 | return 0; |
| 26 | |