Hi Amitkumar,
> This patch adds support for debug mask read/write operations
> via debugfs. It is useful during debugging driver logs.
>
> Examples:
>
> Read current debug mask:
> cat /sys/kernel/debug/bluetooth/hci0/config/debug_mask
>
> Update debug mask:
> echo 0xff > /sys/kernel/debug/bluetooth/hci0/config/debug_mask
>
> Signed-off-by: Zhaoyang Liu <liuzy@xxxxxxxxxxx>
> Signed-off-by: Cathy Luo <cluo@xxxxxxxxxxx>
> Signed-off-by: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
> ---
> drivers/bluetooth/btmrvl_debugfs.c | 51 ++++++++++++++++++++++++++++++++++++++
> 1 file changed, 51 insertions(+)
>
> diff --git a/drivers/bluetooth/btmrvl_debugfs.c b/drivers/bluetooth/btmrvl_debugfs.c
> index 1828ed8..af52b03 100644
> --- a/drivers/bluetooth/btmrvl_debugfs.c
> +++ b/drivers/bluetooth/btmrvl_debugfs.c
> @@ -196,6 +196,55 @@ static const struct file_operations btmrvl_fwdump_fops = {
> .llseek = default_llseek,
> };
>
> +/* Proc debug_mask file read handler.
> + * This function is called when the 'debug_mask' file is opened for reading
> + * This function can be used read driver debugging mask value.
> + */
> +static ssize_t btmrvl_debug_mask_read(struct file *file, char __user *ubuf,
> + size_t count, loff_t *ppos)
> +{
> + struct btmrvl_private *priv = file->private_data;
> + char buf[32];
> + int ret;
> +
> + ret = snprintf(buf, sizeof(buf) - 1, "debug mask=0x%08x\n",
> + priv->adapter->debug_mask);
the file is already called debug mask, no need to prefix the file content with some key=val thing. Just return the value.
Regards
Marcel
--
To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
