Re: [PATCH v4 6/7] DMA: sun6i: Add driver for the Allwinner A31 DMA controller
From: Shevchenko, Andriy <hidden>
Date: 2014-03-11 10:23:45
Also in:
linux-arm-kernel, lkml
On Tue, 2014-03-11 at 11:08 +0100, Maxime Ripard wrote: []
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+ spin_lock_irq(&sdev->lock); + for (pchan_idx = 0; pchan_idx < NR_MAX_CHANNELS; pchan_idx++) { + pchan = &sdev->pchans[pchan_idx]; + + if (pchan->vchan == NULL && !list_empty(&sdev->pending)) {!pchan->vchan && ...Ok.quoted
And you may decrease indentation level here if you use negative condition.Hmmm, I'm not following you here. What do you mean?
for () {
...
if (!(your current condition))
continue;
... (do something else with decreased indentation level)
}
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+ vchan = list_first_entry(&sdev->pending, + struct sun6i_vchan, node); + + /* Remove from pending channels */ + list_del_init(&vchan->node); + pchan_alloc |= BIT(pchan_idx); + + /* Mark this channel allocated */ + pchan->vchan = vchan; + vchan->phy = pchan; + dev_dbg(sdev->slave.dev, "pchan %u: alloc vchan %p\n", + pchan->idx, &vchan->vc); + } + } + spin_unlock_irq(&sdev->lock); + + for (pchan_idx = 0; pchan_idx < NR_MAX_CHANNELS; pchan_idx++) { + if (pchan_alloc & BIT(pchan_idx)) {Ditto.
Same here. []
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+#ifdef DEBUG + dev_dbg(chan2dev(chan), "First: %pad\n", &txd->p_lli);dev_dbg is aware of DEBUG. So, please, remove that #ifdef at all.Yep, but the line just below isn't. The ifdef here is not really to prevent the call to dev_dbg, but rather...quoted
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+ for (prev = txd->v_lli; prev != NULL; prev = prev->v_lli_next)... this.
It doesn't matter since implementation of sun6i_dma_dump_lli is (and actually should be) aware of DEBUG already, because it's dev_dbg based.
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You may remove '!= NULL' part.Ok.quoted
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+ sun6i_dma_dump_lli(vchan, prev); +#endif
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