diff options
Diffstat (limited to 'drivers/misc/sram.c')
| -rw-r--r-- | drivers/misc/sram.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/misc/sram.c b/drivers/misc/sram.c index 21181fa243df..eeaaf5fca105 100644 --- a/drivers/misc/sram.c +++ b/drivers/misc/sram.c @@ -69,12 +69,23 @@ static int sram_probe(struct platform_device *pdev) INIT_LIST_HEAD(&reserve_list); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - virt_base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(virt_base)) - return PTR_ERR(virt_base); + if (!res) { + dev_err(&pdev->dev, "found no memory resource\n"); + return -EINVAL; + } size = resource_size(res); + if (!devm_request_mem_region(&pdev->dev, + res->start, size, pdev->name)) { + dev_err(&pdev->dev, "could not request region for resource\n"); + return -EBUSY; + } + + virt_base = devm_ioremap_wc(&pdev->dev, res->start, size); + if (IS_ERR(virt_base)) + return PTR_ERR(virt_base); + sram = devm_kzalloc(&pdev->dev, sizeof(*sram), GFP_KERNEL); if (!sram) return -ENOMEM; @@ -205,7 +216,7 @@ static int sram_remove(struct platform_device *pdev) } #ifdef CONFIG_OF -static struct of_device_id sram_dt_ids[] = { +static const struct of_device_id sram_dt_ids[] = { { .compatible = "mmio-sram" }, {} }; |