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net/mlx5: Fix incorrect raw command length parsing 

The NULL character was not set correctly for the string containing
the command length, this caused failures reading the output of the
command due to a random length. The fix is to initialize the output
length string.

Fixes: e126ba97db ("mlx5: Add driver for Mellanox Connect-IB adapters")
Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Alex Vesker 2018-05-25 20:25:59 +03:00 committed by Saeed Mahameed
parent d14fcb8d87
commit 603b7bcff8
1 changed files with 1 additions and 3 deletions
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4
drivers/net/ethernet/mellanox/mlx5/core/cmd.c
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@ -1276,7 +1276,7 @@ static ssize_t outlen_write(struct file *filp, const char __user *buf,
{
struct mlx5_core_dev *dev = filp->private_data;
struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
char outlen_str[8];
char outlen_str[8] = {0};
int outlen;
void *ptr;
int err;
@ -1291,8 +1291,6 @@ static ssize_t outlen_write(struct file *filp, const char __user *buf,
if (copy_from_user(outlen_str, buf, count))
return -EFAULT;
outlen_str[7] = 0;
err = sscanf(outlen_str, "%d", &outlen);
if (err < 0)
return err;