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Commit 0f65169b authored by Richard Röjfors's avatar Richard Röjfors Committed by Dan Williams
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dma: timb-dma: Update comment and fix compiler warning 



An incremental patch which clarifies what the spinlock is used for
and fixes a compiler warning.

Signed-off-by: default avatarRichard Röjfors <richard.rojfors@pelagicore.com>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent de5d4453

drivers/dma/timb_dma.c

+5 −2
Original line number Diff line number Diff line
@@ -79,7 +79,10 @@ struct timb_dma_desc { 
struct timb_dma_chan {

	struct dma_chan		chan;

	void __iomem		*membase;

	spinlock_t		lock; /* Used for mutual exclusion */

	spinlock_t		lock; /* Used to protect data structures,

					especially the lists and descriptors,

					from races between the tasklet and calls

					from above */

	dma_cookie_t		last_completed_cookie;

	bool			ongoing;

	struct list_head	active_list;
@@ -197,7 +200,7 @@ static int td_fill_desc(struct timb_dma_chan *td_chan, u8 *dma_desc, 
	}



	dev_dbg(chan2dev(&td_chan->chan), "desc: %p, addr: %p\n",

		dma_desc, (void *)(int)sg_dma_address(sg));

		dma_desc, (void *)sg_dma_address(sg));



	dma_desc[7] = (sg_dma_address(sg) >> 24) & 0xff;

	dma_desc[6] = (sg_dma_address(sg) >> 16) & 0xff;