diff options
Diffstat (limited to 'drivers/net/mlx4/fw.c')
| -rw-r--r-- | drivers/net/mlx4/fw.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/mlx4/fw.c b/drivers/net/mlx4/fw.c index b68eee2414c..7a7e18ba278 100644 --- a/drivers/net/mlx4/fw.c +++ b/drivers/net/mlx4/fw.c @@ -289,6 +289,10 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap) MLX4_GET(field, outbox, QUERY_DEV_CAP_LOG_BF_REG_SZ_OFFSET); dev_cap->bf_reg_size = 1 << (field & 0x1f); MLX4_GET(field, outbox, QUERY_DEV_CAP_LOG_MAX_BF_REGS_PER_PAGE_OFFSET); + if ((1 << (field & 0x3f)) > (PAGE_SIZE / dev_cap->bf_reg_size)) { + mlx4_warn(dev, "firmware bug: log2 # of blue flame regs is invalid (%d), forcing 3\n", field & 0x1f); + field = 3; + } dev_cap->bf_regs_per_page = 1 << (field & 0x3f); mlx4_dbg(dev, "BlueFlame available (reg size %d, regs/page %d)\n", dev_cap->bf_reg_size, dev_cap->bf_regs_per_page); |