diff options
Diffstat (limited to 'drivers/dma/at_hdmac.c')
| -rw-r--r-- | drivers/dma/at_hdmac.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c index 45bbcd6146fd..7eaee5b705b1 100644 --- a/drivers/dma/at_hdmac.c +++ b/drivers/dma/at_hdmac.c @@ -598,9 +598,9 @@ static void atc_handle_cyclic(struct at_dma_chan *atchan) /*-- IRQ & Tasklet ---------------------------------------------------*/ -static void atc_tasklet(unsigned long data) +static void atc_tasklet(struct tasklet_struct *t) { - struct at_dma_chan *atchan = (struct at_dma_chan *)data; + struct at_dma_chan *atchan = from_tasklet(atchan, t, tasklet); if (test_and_clear_bit(ATC_IS_ERROR, &atchan->status)) return atc_handle_error(atchan); @@ -1650,13 +1650,17 @@ static struct dma_chan *at_dma_xlate(struct of_phandle_args *dma_spec, return NULL; dmac_pdev = of_find_device_by_node(dma_spec->np); + if (!dmac_pdev) + return NULL; dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); atslave = kmalloc(sizeof(*atslave), GFP_KERNEL); - if (!atslave) + if (!atslave) { + put_device(&dmac_pdev->dev); return NULL; + } atslave->cfg = ATC_DST_H2SEL_HW | ATC_SRC_H2SEL_HW; /* @@ -1685,8 +1689,11 @@ static struct dma_chan *at_dma_xlate(struct of_phandle_args *dma_spec, atslave->dma_dev = &dmac_pdev->dev; chan = dma_request_channel(mask, at_dma_filter, atslave); - if (!chan) + if (!chan) { + put_device(&dmac_pdev->dev); + kfree(atslave); return NULL; + } atchan = to_at_dma_chan(chan); atchan->per_if = dma_spec->args[0] & 0xff; @@ -1885,8 +1892,7 @@ static int __init at_dma_probe(struct platform_device *pdev) INIT_LIST_HEAD(&atchan->queue); INIT_LIST_HEAD(&atchan->free_list); - tasklet_init(&atchan->tasklet, atc_tasklet, - (unsigned long)atchan); + tasklet_setup(&atchan->tasklet, atc_tasklet); atc_enable_chan_irq(atdma, i); } |