From cca990c85d37a9ed42d2cac53c619abec7faa12f Mon Sep 17 00:00:00 2001 From: Alexander Aring Date: Sun, 1 Mar 2015 21:55:31 +0100 Subject: [PATCH] at86rf230: remove multiple dereferencing for irq By holding the irq variable inside at86rf230_state_change we can squash some multiple dereferencing for getting irq num. Signed-off-by: Alexander Aring Signed-off-by: Marcel Holtmann --- drivers/net/ieee802154/at86rf230.c | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c index 8e93ea415149..7f27fa35bde3 100644 --- a/drivers/net/ieee802154/at86rf230.c +++ b/drivers/net/ieee802154/at86rf230.c @@ -62,6 +62,7 @@ struct at86rf2xx_chip_data { struct at86rf230_state_change { struct at86rf230_local *lp; + int irq; struct spi_message msg; struct spi_transfer trx; @@ -483,7 +484,7 @@ at86rf230_async_read_reg(struct at86rf230_local *lp, const u8 reg, rc = spi_async(lp->spi, &ctx->msg); if (rc) { if (irq_enable) - enable_irq(lp->spi->irq); + enable_irq(ctx->irq); at86rf230_async_error(lp, ctx, rc); } @@ -667,7 +668,7 @@ at86rf230_async_state_change_start(void *context) rc = spi_async(lp->spi, &ctx->msg); if (rc) { if (ctx->irq_enable) - enable_irq(lp->spi->irq); + enable_irq(ctx->irq); at86rf230_async_error(lp, ctx, rc); } @@ -726,7 +727,7 @@ at86rf230_tx_complete(void *context) struct at86rf230_state_change *ctx = context; struct at86rf230_local *lp = ctx->lp; - enable_irq(lp->spi->irq); + enable_irq(ctx->irq); ieee802154_xmit_complete(lp->hw, lp->tx_skb, !lp->tx_aret); } @@ -798,7 +799,7 @@ at86rf230_rx_read_frame_complete(void *context) lqi = buf[2 + len]; memcpy(rx_local_buf, buf + 2, len); - enable_irq(lp->spi->irq); + enable_irq(ctx->irq); skb = dev_alloc_skb(IEEE802154_MTU); if (!skb) { @@ -811,8 +812,10 @@ at86rf230_rx_read_frame_complete(void *context) } static void -at86rf230_rx_read_frame(struct at86rf230_local *lp) +at86rf230_rx_read_frame(void *context) { + struct at86rf230_state_change *ctx = context; + struct at86rf230_local *lp = ctx->lp; int rc; u8 *buf = lp->irq.buf; @@ -822,7 +825,7 @@ at86rf230_rx_read_frame(struct at86rf230_local *lp) lp->irq.msg.complete = at86rf230_rx_read_frame_complete; rc = spi_async(lp->spi, &lp->irq.msg); if (rc) { - enable_irq(lp->spi->irq); + enable_irq(ctx->irq); at86rf230_async_error(lp, &lp->irq, rc); } } @@ -830,16 +833,13 @@ at86rf230_rx_read_frame(struct at86rf230_local *lp) static void at86rf230_rx_trac_check(void *context) { - struct at86rf230_state_change *ctx = context; - struct at86rf230_local *lp = ctx->lp; - /* Possible check on trac status here. This could be useful to make * some stats why receive is failed. Not used at the moment, but it's * maybe timing relevant. Datasheet doesn't say anything about this. * The programming guide say do it so. */ - at86rf230_rx_read_frame(lp); + at86rf230_rx_read_frame(context); } static void @@ -878,7 +878,7 @@ at86rf230_irq_status(void *context) if (irq & IRQ_TRX_END) { at86rf230_irq_trx_end(lp); } else { - enable_irq(lp->spi->irq); + enable_irq(ctx->irq); dev_err(&lp->spi->dev, "not supported irq %02x received\n", irq); } @@ -1539,6 +1539,7 @@ static void at86rf230_setup_spi_messages(struct at86rf230_local *lp) { lp->state.lp = lp; + lp->state.irq = lp->spi->irq; spi_message_init(&lp->state.msg); lp->state.msg.context = &lp->state; lp->state.trx.tx_buf = lp->state.buf; @@ -1546,6 +1547,7 @@ at86rf230_setup_spi_messages(struct at86rf230_local *lp) spi_message_add_tail(&lp->state.trx, &lp->state.msg); lp->irq.lp = lp; + lp->irq.irq = lp->spi->irq; spi_message_init(&lp->irq.msg); lp->irq.msg.context = &lp->irq; lp->irq.trx.tx_buf = lp->irq.buf; @@ -1553,6 +1555,7 @@ at86rf230_setup_spi_messages(struct at86rf230_local *lp) spi_message_add_tail(&lp->irq.trx, &lp->irq.msg); lp->tx.lp = lp; + lp->tx.irq = lp->spi->irq; spi_message_init(&lp->tx.msg); lp->tx.msg.context = &lp->tx; lp->tx.trx.tx_buf = lp->tx.buf; -- 2.39.5