DMA: PL330: Use devm_* functions
devm_* functions are device managed and make the code and error
handling a bit simpler.
Cc: Jassi Brar <jassisinghbrar@gmail.com>
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 95555f3..f7edb6f 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2866,7 +2866,7 @@
pdat = adev->dev.platform_data;
/* Allocate a new DMAC and its Channels */
- pdmac = kzalloc(sizeof(*pdmac), GFP_KERNEL);
+ pdmac = devm_kzalloc(&adev->dev, sizeof(*pdmac), GFP_KERNEL);
if (!pdmac) {
dev_err(&adev->dev, "unable to allocate mem\n");
return -ENOMEM;
@@ -2878,13 +2878,9 @@
pi->mcbufsz = pdat ? pdat->mcbuf_sz : 0;
res = &adev->res;
- request_mem_region(res->start, resource_size(res), "dma-pl330");
-
- pi->base = ioremap(res->start, resource_size(res));
- if (!pi->base) {
- ret = -ENXIO;
- goto probe_err1;
- }
+ pi->base = devm_request_and_ioremap(&adev->dev, res);
+ if (!pi->base)
+ return -ENXIO;
amba_set_drvdata(adev, pdmac);
@@ -2892,11 +2888,11 @@
ret = request_irq(irq, pl330_irq_handler, 0,
dev_name(&adev->dev), pi);
if (ret)
- goto probe_err2;
+ return ret;
ret = pl330_add(pi);
if (ret)
- goto probe_err3;
+ goto probe_err1;
INIT_LIST_HEAD(&pdmac->desc_pool);
spin_lock_init(&pdmac->pool_lock);
@@ -2918,7 +2914,7 @@
if (!pdmac->peripherals) {
ret = -ENOMEM;
dev_err(&adev->dev, "unable to allocate pdmac->peripherals\n");
- goto probe_err4;
+ goto probe_err2;
}
for (i = 0; i < num_chan; i++) {
@@ -2962,7 +2958,7 @@
ret = dma_async_device_register(pd);
if (ret) {
dev_err(&adev->dev, "unable to register DMAC\n");
- goto probe_err4;
+ goto probe_err2;
}
dev_info(&adev->dev,
@@ -2975,15 +2971,10 @@
return 0;
-probe_err4:
- pl330_del(pi);
-probe_err3:
- free_irq(irq, pi);
probe_err2:
- iounmap(pi->base);
+ pl330_del(pi);
probe_err1:
- release_mem_region(res->start, resource_size(res));
- kfree(pdmac);
+ free_irq(irq, pi);
return ret;
}
@@ -2993,7 +2984,6 @@
struct dma_pl330_dmac *pdmac = amba_get_drvdata(adev);
struct dma_pl330_chan *pch, *_p;
struct pl330_info *pi;
- struct resource *res;
int irq;
if (!pdmac)
@@ -3020,13 +3010,6 @@
irq = adev->irq[0];
free_irq(irq, pi);
- iounmap(pi->base);
-
- res = &adev->res;
- release_mem_region(res->start, resource_size(res));
-
- kfree(pdmac);
-
return 0;
}