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Ensure the firmware is notified of any host memory allocation

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failures. Else firmware commands may time out waiting for host
memory.

Sponsored by:	Mellanox Technologies
MFC after:	1 week
This commit is contained in:
Hans Petter Selasky 2016-11-07 11:20:13 +00:00
parent 97ac390861
commit 91951e3978
1 changed files with 5 additions and 5 deletions
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10
sys/dev/mlx5/mlx5_core/mlx5_pagealloc.c
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@ -246,13 +246,14 @@ static int give_pages(struct mlx5_core_dev *dev, u16 func_id, int npages,
int inlen;
u64 addr;
int err;
int i;
int i = 0;
inlen = sizeof(*in) + npages * sizeof(in->pas[0]);
in = mlx5_vzalloc(inlen);
if (!in) {
mlx5_core_warn(dev, "vzalloc failed %d\n", inlen);
return -ENOMEM;
err = -ENOMEM;
goto out_alloc;
}
memset(&out, 0, sizeof(out));
@ -263,7 +264,7 @@ static int give_pages(struct mlx5_core_dev *dev, u16 func_id, int npages,
if (err == -ENOMEM)
err = alloc_system_page(dev, func_id);
if (err)
goto out_4k;
goto out_alloc;
goto retry;
}
@ -301,12 +302,11 @@ static int give_pages(struct mlx5_core_dev *dev, u16 func_id, int npages,
memset(&out, 0, sizeof(out));
nin->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_MANAGE_PAGES);
nin->hdr.opmod = cpu_to_be16(MLX5_PAGES_CANT_GIVE);
nin->func_id = cpu_to_be16(func_id);
if (mlx5_cmd_exec(dev, nin, sizeof(*nin), &out, sizeof(out)))
mlx5_core_warn(dev, "page notify failed\n");
kfree(nin);
}
out_4k:
for (i--; i >= 0; i--)
free_4k(dev, be64_to_cpu(in->pas[i]));
out_free: