5.4-stable review patch. If anyone has any objections, please let me know.
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From: George Shuklin george.shuklin@gmail.com
[ Upstream commit 9fc3bc7643341dc5be7d269f3d3dbe441d8d7ac3 ]
Dell R650xs servers hangs on reboot if tg3 driver calls tg3_power_down.
This happens only if network adapters (BCM5720 for R650xs) were initialized using SNP (e.g. by booting ipxe.efi).
The actual problem is on Dell side, but this fix allows servers to come back alive after reboot.
Signed-off-by: George Shuklin george.shuklin@gmail.com Fixes: 2ca1c94ce0b6 ("tg3: Disable tg3 device on system reboot to avoid triggering AER") Reviewed-by: Pavan Chebbi pavan.chebbi@broadcom.com Reviewed-by: Michael Chan michael.chan@broadcom.com Link: https://lore.kernel.org/r/20231103115029.83273-1-george.shuklin@gmail.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/broadcom/tg3.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index b16517d162cfd..90bfaea6d6292 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -18164,7 +18164,8 @@ static void tg3_shutdown(struct pci_dev *pdev) if (netif_running(dev)) dev_close(dev);
- tg3_power_down(tp); + if (system_state == SYSTEM_POWER_OFF) + tg3_power_down(tp);
rtnl_unlock();