This is a note to let you know that I've just added the patch titled
ethernet: s2io: disable napi when start nic failed in s2io_card_up()
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ethernet-s2io-disable-napi-when-start-nic-failed-in-.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6ef482a946e77bba1dc76b5e8305a0caa71a83ea
Author: Zhengchao Shao <shaozhengchao@xxxxxxxxxx>
Date: Wed Nov 9 10:37:41 2022 +0800
ethernet: s2io: disable napi when start nic failed in s2io_card_up()
[ Upstream commit 0348c1ab980c1d43fb37b758d4b760990c066cb5 ]
When failed to start nic or add interrupt service routine in
s2io_card_up() for opening device, napi isn't disabled. When open
s2io device next time, it will trigger a BUG_ON()in napi_enable().
Compile tested only.
Fixes: 5f490c968056 ("S2io: Fixed synchronization between scheduling of napi with card reset and close")
Signed-off-by: Zhengchao Shao <shaozhengchao@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221109023741.131552-1-shaozhengchao@xxxxxxxxxx
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/neterion/s2io.c b/drivers/net/ethernet/neterion/s2io.c
index 30f955efa830..8f74c039b3be 100644
--- a/drivers/net/ethernet/neterion/s2io.c
+++ b/drivers/net/ethernet/neterion/s2io.c
@@ -7128,9 +7128,8 @@ static int s2io_card_up(struct s2io_nic *sp)
if (ret) {
DBG_PRINT(ERR_DBG, "%s: Out of memory in Open\n",
dev->name);
- s2io_reset(sp);
- free_rx_buffers(sp);
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto err_fill_buff;
}
DBG_PRINT(INFO_DBG, "Buf in ring:%d is %d:\n", i,
ring->rx_bufs_left);
@@ -7168,18 +7167,16 @@ static int s2io_card_up(struct s2io_nic *sp)
/* Enable Rx Traffic and interrupts on the NIC */
if (start_nic(sp)) {
DBG_PRINT(ERR_DBG, "%s: Starting NIC failed\n", dev->name);
- s2io_reset(sp);
- free_rx_buffers(sp);
- return -ENODEV;
+ ret = -ENODEV;
+ goto err_out;
}
/* Add interrupt service routine */
if (s2io_add_isr(sp) != 0) {
if (sp->config.intr_type == MSI_X)
s2io_rem_isr(sp);
- s2io_reset(sp);
- free_rx_buffers(sp);
- return -ENODEV;
+ ret = -ENODEV;
+ goto err_out;
}
timer_setup(&sp->alarm_timer, s2io_alarm_handle, 0);
@@ -7199,6 +7196,20 @@ static int s2io_card_up(struct s2io_nic *sp)
}
return 0;
+
+err_out:
+ if (config->napi) {
+ if (config->intr_type == MSI_X) {
+ for (i = 0; i < sp->config.rx_ring_num; i++)
+ napi_disable(&sp->mac_control.rings[i].napi);
+ } else {
+ napi_disable(&sp->napi);
+ }
+ }
+err_fill_buff:
+ s2io_reset(sp);
+ free_rx_buffers(sp);
+ return ret;
}
/**
