Commit 819504f4 authored by Rabin Vincent's avatar Rabin Vincent Committed by Dan Williams
Browse files

DMAENGINE: ste_dma40: fix resource leaks in error paths. 



Fix some leaks of allocated descriptors in error paths.

Acked-by: default avatarJonas Aaberg <jonas.aberg@stericsson.com>
Signed-off-by: default avatarRabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@stericsson.com>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent a2c15fa4

drivers/dma/ste_dma40.c

+13 −4
Original line number Diff line number Diff line
@@ -1728,6 +1728,8 @@ struct dma_async_tx_descriptor *stedma40_memcpy_sg(struct dma_chan *chan, 


	return &d40d->txd;

err:

	if (d40d)

		d40_desc_free(d40c, d40d);

	spin_unlock_irqrestore(&d40c->lock, flags);

	return NULL;

}
@@ -1939,8 +1941,9 @@ static struct dma_async_tx_descriptor *d40_prep_memcpy(struct dma_chan *chan, 
err_fill_lli:

	dev_err(&d40c->chan.dev->device,

		"[%s] Failed filling in PHY LLI\n", __func__);

	d40_pool_lli_free(d40d);

err:

	if (d40d)

		d40_desc_free(d40c, d40d);

	spin_unlock_irqrestore(&d40c->lock, flags);

	return NULL;

}
@@ -2079,10 +2082,9 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan, 


	spin_lock_irqsave(&d40c->lock, flags);

	d40d = d40_desc_get(d40c);

	spin_unlock_irqrestore(&d40c->lock, flags);



	if (d40d == NULL)

		return NULL;

		goto err;



	if (d40c->log_num != D40_PHY_CHAN)

		err = d40_prep_slave_sg_log(d40d, d40c, sgl, sg_len,
@@ -2095,7 +2097,7 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan, 
			"[%s] Failed to prepare %s slave sg job: %d\n",

			__func__,

			d40c->log_num != D40_PHY_CHAN ? "log" : "phy", err);

		return NULL;

		goto err;

	}



	d40d->txd.flags = dma_flags;
@@ -2104,7 +2106,14 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan, 


	d40d->txd.tx_submit = d40_tx_submit;



	spin_unlock_irqrestore(&d40c->lock, flags);

	return &d40d->txd;



err:

	if (d40d)

		d40_desc_free(d40c, d40d);

	spin_unlock_irqrestore(&d40c->lock, flags);

	return NULL;

}



static enum dma_status d40_tx_status(struct dma_chan *chan,