On Wed, May 27, 2015 at 10:50:01AM +0800, Zhang, Yanmin wrote:
> Wake up ldisc device before calling its driver to access the device.
>
> Signed-off-by: Zhang Yanmin <yanmin.zh...@intel.com>
>
> ---
>
> drivers/tty/n_gsm.c | 40 +++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 39 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
> index 2c34c32..40671fa 100644
> --- a/drivers/tty/n_gsm.c
> +++ b/drivers/tty/n_gsm.c
> @@ -62,6 +62,7 @@
> #include <linux/netdevice.h>
> #include <linux/etherdevice.h>
> #include <linux/gsmmux.h>
> +#include <linux/pm_runtime.h>
>
> static int debug;
> module_param(debug, int, 0600);
> @@ -555,6 +556,27 @@ static int gsm_stuff_frame(const u8 *input, u8 *output,
> int len)
> return olen;
> }
>
> +static int pm_runtime_get_sync_tty(struct tty_struct *tty)
> +{
> + int ret = 0;
> +
> + /*Wakeup parent as tty itself doesn't enable runtime*/
No spaces in your comment?
Anyway, this is corrupted and can't be applied, please fix up your email
client and try it again...
greg k-h
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