From 3bc770b0e998a69c7085ec36405eda246b5b10d8 Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Thu, 10 Jun 2021 10:01:10 +0800 Subject: iommu/vt-d: Use DEVICE_ATTR_RO macro Use DEVICE_ATTR_RO() helper instead of plain DEVICE_ATTR(), which makes the code a bit shorter and easier to read. Signed-off-by: YueHaibing Signed-off-by: Lu Baolu Link: https://lore.kernel.org/r/20210528130229.22108-1-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20210610020115.1637656-19-baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel --- drivers/iommu/intel/iommu.c | 42 ++++++++++++++++++------------------------ 1 file changed, 18 insertions(+), 24 deletions(-) (limited to 'drivers/iommu') diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index c45d4946f92d..65458aee0d95 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -4139,62 +4139,56 @@ static inline struct intel_iommu *dev_to_intel_iommu(struct device *dev) return container_of(iommu_dev, struct intel_iommu, iommu); } -static ssize_t intel_iommu_show_version(struct device *dev, - struct device_attribute *attr, - char *buf) +static ssize_t version_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct intel_iommu *iommu = dev_to_intel_iommu(dev); u32 ver = readl(iommu->reg + DMAR_VER_REG); return sprintf(buf, "%d:%d\n", DMAR_VER_MAJOR(ver), DMAR_VER_MINOR(ver)); } -static DEVICE_ATTR(version, S_IRUGO, intel_iommu_show_version, NULL); +static DEVICE_ATTR_RO(version); -static ssize_t intel_iommu_show_address(struct device *dev, - struct device_attribute *attr, - char *buf) +static ssize_t address_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct intel_iommu *iommu = dev_to_intel_iommu(dev); return sprintf(buf, "%llx\n", iommu->reg_phys); } -static DEVICE_ATTR(address, S_IRUGO, intel_iommu_show_address, NULL); +static DEVICE_ATTR_RO(address); -static ssize_t intel_iommu_show_cap(struct device *dev, - struct device_attribute *attr, - char *buf) +static ssize_t cap_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct intel_iommu *iommu = dev_to_intel_iommu(dev); return sprintf(buf, "%llx\n", iommu->cap); } -static DEVICE_ATTR(cap, S_IRUGO, intel_iommu_show_cap, NULL); +static DEVICE_ATTR_RO(cap); -static ssize_t intel_iommu_show_ecap(struct device *dev, - struct device_attribute *attr, - char *buf) +static ssize_t ecap_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct intel_iommu *iommu = dev_to_intel_iommu(dev); return sprintf(buf, "%llx\n", iommu->ecap); } -static DEVICE_ATTR(ecap, S_IRUGO, intel_iommu_show_ecap, NULL); +static DEVICE_ATTR_RO(ecap); -static ssize_t intel_iommu_show_ndoms(struct device *dev, - struct device_attribute *attr, - char *buf) +static ssize_t domains_supported_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct intel_iommu *iommu = dev_to_intel_iommu(dev); return sprintf(buf, "%ld\n", cap_ndoms(iommu->cap)); } -static DEVICE_ATTR(domains_supported, S_IRUGO, intel_iommu_show_ndoms, NULL); +static DEVICE_ATTR_RO(domains_supported); -static ssize_t intel_iommu_show_ndoms_used(struct device *dev, - struct device_attribute *attr, - char *buf) +static ssize_t domains_used_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct intel_iommu *iommu = dev_to_intel_iommu(dev); return sprintf(buf, "%d\n", bitmap_weight(iommu->domain_ids, cap_ndoms(iommu->cap))); } -static DEVICE_ATTR(domains_used, S_IRUGO, intel_iommu_show_ndoms_used, NULL); +static DEVICE_ATTR_RO(domains_used); static struct attribute *intel_iommu_attrs[] = { &dev_attr_version.attr, -- cgit v1.2.3