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Commit 5731d7b3 authored by Robert Stonehouse's avatar Robert Stonehouse Committed by Ben Hutchings
Browse files

sfc: Refactor efx_mcdi_poll() by introducing efx_mcdi_poll_once() 



Signed-off-by: default avatarBen Hutchings <bhutchings@solarflare.com>
parent 2ec03014

drivers/net/ethernet/sfc/mcdi.c

+17 −6
Original line number Diff line number Diff line
@@ -50,6 +50,7 @@ struct efx_mcdi_async_param { 
static void efx_mcdi_timeout_async(unsigned long context);

static int efx_mcdi_drv_attach(struct efx_nic *efx, bool driver_operating,

			       bool *was_attached_out);

static bool efx_mcdi_poll_once(struct efx_nic *efx);



static inline struct efx_mcdi_iface *efx_mcdi(struct efx_nic *efx)

{
@@ -237,6 +238,21 @@ static void efx_mcdi_read_response_header(struct efx_nic *efx) 
	}

}



static bool efx_mcdi_poll_once(struct efx_nic *efx)

{

	struct efx_mcdi_iface *mcdi = efx_mcdi(efx);



	rmb();

	if (!efx->type->mcdi_poll_response(efx))

		return false;



	spin_lock_bh(&mcdi->iface_lock);

	efx_mcdi_read_response_header(efx);

	spin_unlock_bh(&mcdi->iface_lock);



	return true;

}



static int efx_mcdi_poll(struct efx_nic *efx)

{

	struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
@@ -272,18 +288,13 @@ static int efx_mcdi_poll(struct efx_nic *efx) 


		time = jiffies;



		rmb();

		if (efx->type->mcdi_poll_response(efx))

		if (efx_mcdi_poll_once(efx))

			break;



		if (time_after(time, finish))

			return -ETIMEDOUT;

	}



	spin_lock_bh(&mcdi->iface_lock);

	efx_mcdi_read_response_header(efx);

	spin_unlock_bh(&mcdi->iface_lock);



	/* Return rc=0 like wait_event_timeout() */

	return 0;

}