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path: root/drivers/crypto/omap-des.c
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Diffstat (limited to 'drivers/crypto/omap-des.c')
-rw-r--r--drivers/crypto/omap-des.c33
1 files changed, 26 insertions, 7 deletions
diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c
index ec5f13162b73..b8bc84be8741 100644
--- a/drivers/crypto/omap-des.c
+++ b/drivers/crypto/omap-des.c
@@ -223,12 +223,19 @@ static void omap_des_write_n(struct omap_des_dev *dd, u32 offset,
static int omap_des_hw_init(struct omap_des_dev *dd)
{
+ int err;
+
/*
* clocks are enabled when request starts and disabled when finished.
* It may be long delays between requests.
* Device might go to off mode to save power.
*/
- pm_runtime_get_sync(dd->dev);
+ err = pm_runtime_get_sync(dd->dev);
+ if (err < 0) {
+ pm_runtime_put_noidle(dd->dev);
+ dev_err(dd->dev, "%s: failed to get_sync(%d)\n", __func__, err);
+ return err;
+ }
if (!(dd->flags & FLAGS_INIT)) {
dd->flags |= FLAGS_INIT;
@@ -1074,16 +1081,20 @@ static int omap_des_probe(struct platform_device *pdev)
if (err)
goto err_res;
- dd->io_base = devm_request_and_ioremap(dev, res);
- if (!dd->io_base) {
- dev_err(dev, "can't ioremap\n");
- err = -ENOMEM;
+ dd->io_base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(dd->io_base)) {
+ err = PTR_ERR(dd->io_base);
goto err_res;
}
dd->phys_base = res->start;
pm_runtime_enable(dev);
- pm_runtime_get_sync(dev);
+ err = pm_runtime_get_sync(dev);
+ if (err < 0) {
+ pm_runtime_put_noidle(dev);
+ dev_err(dd->dev, "%s: failed to get_sync(%d)\n", __func__, err);
+ goto err_get;
+ }
omap_des_dma_stop(dd);
@@ -1148,6 +1159,7 @@ err_algs:
err_irq:
tasklet_kill(&dd->done_task);
tasklet_kill(&dd->queue_task);
+err_get:
pm_runtime_disable(dev);
err_res:
dd = NULL;
@@ -1191,7 +1203,14 @@ static int omap_des_suspend(struct device *dev)
static int omap_des_resume(struct device *dev)
{
- pm_runtime_get_sync(dev);
+ int err;
+
+ err = pm_runtime_get_sync(dev);
+ if (err < 0) {
+ pm_runtime_put_noidle(dev);
+ dev_err(dev, "%s: failed to get_sync(%d)\n", __func__, err);
+ return err;
+ }
return 0;
}
#endif