crypto: mv_cesa - request registers memory region

The mv_cesa driver does not request the CESA registers memory region.
Since we're about to add a new CESA driver, we need to make sure only one
of these drivers probe the CESA device, and requesting the registers memory
region is a good way to achieve that.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/mv_cesa.c b/drivers/crypto/mv_cesa.c
index e63efbd..eb645c2 100644 (file)
--- a/drivers/crypto/mv_cesa.c
+++ b/drivers/crypto/mv_cesa.c
@@ -1041,23 +1041,23 @@ static int mv_probe(struct platform_device *pdev)
 
        spin_lock_init(&cp->lock);
        crypto_init_queue(&cp->queue, 50);
-       cp->reg = ioremap(res->start, resource_size(res));
-       if (!cp->reg) {
-               ret = -ENOMEM;
+       cp->reg = devm_ioremap_resource(&pdev->dev, res);
+       if (IS_ERR(cp->reg)) {
+               ret = PTR_ERR(cp->reg);
                goto err;
        }
 
        res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
        if (!res) {
                ret = -ENXIO;
-               goto err_unmap_reg;
+               goto err;
        }
        cp->sram_size = resource_size(res);
        cp->max_req_size = cp->sram_size - SRAM_CFG_SPACE;
        cp->sram = ioremap(res->start, cp->sram_size);
        if (!cp->sram) {
                ret = -ENOMEM;
-               goto err_unmap_reg;
+               goto err;
        }
 
        if (pdev->dev.of_node)
@@ -1136,8 +1136,6 @@ err_thread:
        kthread_stop(cp->queue_th);
 err_unmap_sram:
        iounmap(cp->sram);
-err_unmap_reg:
-       iounmap(cp->reg);
 err:
        kfree(cp);
        cpg = NULL;
@@ -1158,7 +1156,6 @@ static int mv_remove(struct platform_device *pdev)
        free_irq(cp->irq, cp);
        memset(cp->sram, 0, cp->sram_size);
        iounmap(cp->sram);
-       iounmap(cp->reg);
 
        if (!IS_ERR(cp->clk)) {
                clk_disable_unprepare(cp->clk);