diff options
| -rw-r--r-- | drivers/mfd/db8500-prcmu.c | 40 |
1 files changed, 21 insertions, 19 deletions
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c index 21434beb420a..25dda8d7cb00 100644 --- a/drivers/mfd/db8500-prcmu.c +++ b/drivers/mfd/db8500-prcmu.c @@ -2704,6 +2704,7 @@ static void dbx500_fw_version_init(struct platform_device *pdev, { struct resource *res; void __iomem *tcpm_base; + u32 version; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "prcmu-tcpm"); @@ -2713,26 +2714,27 @@ static void dbx500_fw_version_init(struct platform_device *pdev, return; } tcpm_base = ioremap(res->start, resource_size(res)); - if (tcpm_base != NULL) { - u32 version; - - version = readl(tcpm_base + version_offset); - fw_info.version.project = (version & 0xFF); - fw_info.version.api_version = (version >> 8) & 0xFF; - fw_info.version.func_version = (version >> 16) & 0xFF; - fw_info.version.errata = (version >> 24) & 0xFF; - strncpy(fw_info.version.project_name, - fw_project_name(fw_info.version.project), - PRCMU_FW_PROJECT_NAME_LEN); - fw_info.valid = true; - pr_info("PRCMU firmware: %s(%d), version %d.%d.%d\n", - fw_info.version.project_name, - fw_info.version.project, - fw_info.version.api_version, - fw_info.version.func_version, - fw_info.version.errata); - iounmap(tcpm_base); + if (!tcpm_base) { + dev_err(&pdev->dev, "no prcmu tcpm mem region provided\n"); + return; } + + version = readl(tcpm_base + version_offset); + fw_info.version.project = (version & 0xFF); + fw_info.version.api_version = (version >> 8) & 0xFF; + fw_info.version.func_version = (version >> 16) & 0xFF; + fw_info.version.errata = (version >> 24) & 0xFF; + strncpy(fw_info.version.project_name, + fw_project_name(fw_info.version.project), + PRCMU_FW_PROJECT_NAME_LEN); + fw_info.valid = true; + pr_info("PRCMU firmware: %s(%d), version %d.%d.%d\n", + fw_info.version.project_name, + fw_info.version.project, + fw_info.version.api_version, + fw_info.version.func_version, + fw_info.version.errata); + iounmap(tcpm_base); } void __init db8500_prcmu_early_init(u32 phy_base, u32 size) |