On 6 May 2016 at 15:16, Pramod Gurav <pramod.gurav@xxxxxxxxxx> wrote:
> uart_change_pm is used to turn on the UART controller resources and
> change UART's PM status. On failure to allocate pages the controller
> be left in ON state. This will change the state to OFF on failure.
>
> Signed-off-by: Pramod Gurav <pramod.gurav@xxxxxxxxxx>
> ---
> drivers/tty/serial/serial_core.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
> index 62fe368..58af2e9 100644
> --- a/drivers/tty/serial/serial_core.c
> +++ b/drivers/tty/serial/serial_core.c
> @@ -156,9 +156,10 @@ static int uart_port_startup(struct tty_struct *tty, struct uart_state *state,
> if (!state->xmit.buf) {
> /* This is protected by the per port mutex */
> page = get_zeroed_page(GFP_KERNEL);
> - if (!page)
> + if (!page) {
> + uart_change_pm(state, UART_PM_STATE_OFF);
> return -ENOMEM;
> -
> + }
> state->xmit.buf = (unsigned char *) page;
> uart_circ_clear(&state->xmit);
> }
Greg,
Any comments on this change?
> --
> 1.8.2.1
>
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