提交 f4ecf29f 编写于 作者: B Benjamin Poirier 提交者: David S. Miller

mlx4_core: Fix fallback from MSI-X to INTx

The test in mlx4_load_one() to remove MLX4_FLAG_MSI_X expects mlx4_NOP() to
fail with -EBUSY. It is also necessary to avoid the reset since the device
is not fully reinitialized before calling mlx4_start_hca() a second time.

Note that this will also affect mlx4_test_interrupts(), the only other user
of MLX4_CMD_NOP.

Fixes: f5aef5aa ("net/mlx4_core: Activate reset flow upon fatal command cases")
Signed-off-by: NBenjamin Poirier <bpoirier@suse.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 ce0e5c52
......@@ -714,8 +714,13 @@ static int mlx4_cmd_wait(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
msecs_to_jiffies(timeout))) {
mlx4_warn(dev, "command 0x%x timed out (go bit not cleared)\n",
op);
err = -EIO;
goto out_reset;
if (op == MLX4_CMD_NOP) {
err = -EBUSY;
goto out;
} else {
err = -EIO;
goto out_reset;
}
}
err = context->result;
......
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