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dmaengine: PL08x: remove waiting descriptor pointer
As we no longer need to pass a descriptor to prep_phy_channel(), we don't need to keep track of the descriptor which is waiting for a channel to become available. So let's get rid of it. Acked-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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c48d496329
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1 changed files with 1 additions and 7 deletions
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@ -223,8 +223,6 @@ enum pl08x_dma_chan_state {
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* @host: a pointer to the host (internal use)
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* @state: whether the channel is idle, paused, running etc
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* @slave: whether this channel is a device (slave) or for memcpy
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* @waiting: a TX descriptor on this channel which is waiting for a physical
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* channel to become available
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* @signal: the physical DMA request signal which this channel is using
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* @mux_use: count of descriptors using this DMA request signal setting
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*/
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@ -243,7 +241,6 @@ struct pl08x_dma_chan {
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struct pl08x_driver_data *host;
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enum pl08x_dma_chan_state state;
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bool slave;
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struct pl08x_txd *waiting;
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int signal;
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unsigned mux_use;
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};
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@ -1074,7 +1071,6 @@ static dma_cookie_t pl08x_tx_submit(struct dma_async_tx_descriptor *tx)
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if (!plchan->slave && !plchan->phychan) {
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/* Do this memcpy whenever there is a channel ready */
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plchan->state = PL08X_CHAN_WAITING;
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plchan->waiting = txd;
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} else {
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plchan->phychan_hold--;
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}
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@ -1696,8 +1692,7 @@ static void pl08x_tasklet(unsigned long data)
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*/
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list_for_each_entry(waiting, &pl08x->memcpy.channels,
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chan.device_node) {
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if (waiting->state == PL08X_CHAN_WAITING &&
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waiting->waiting != NULL) {
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if (waiting->state == PL08X_CHAN_WAITING) {
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int ret;
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/* This should REALLY not fail now */
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@ -1705,7 +1700,6 @@ static void pl08x_tasklet(unsigned long data)
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BUG_ON(ret);
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waiting->phychan_hold--;
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waiting->state = PL08X_CHAN_RUNNING;
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waiting->waiting = NULL;
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pl08x_issue_pending(&waiting->chan);
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break;
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}
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