tree: git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git driver-core-next
head: 75096579c3ac39ddc2f8b0d9a8924eba31f4d920
commit: 75096579c3ac39ddc2f8b0d9a8924eba31f4d920 lib: devres: Introduce devm_ioremap_resource()
date: 3 hours ago
config: make ARCH=openrisc or1ksim_defconfig
All error/warnings:
lib/devres.c: In function 'devm_ioremap_resource':
>> lib/devres.c:116:3: error: implicit declaration of function 'ERR_PTR'
>> lib/devres.c:116:3: warning: return makes pointer from integer without a cast
lib/devres.c:124:3: warning: return makes pointer from integer without a cast
>> lib/devres.c:135:12: warning: assignment makes pointer from integer without a cast
lib/devres.c: In function 'devm_request_and_ioremap':
>> lib/devres.c:163:2: error: implicit declaration of function 'IS_ERR'
vim +/ERR_PTR +116 lib/devres.c
110 void __iomem *dest_ptr;
111
112 BUG_ON(!dev);
113
114 if (!res || resource_type(res) != IORESOURCE_MEM) {
115 dev_err(dev, "invalid resource\n");
> 116 return ERR_PTR(-EINVAL);
117 }
118
119 size = resource_size(res);
120 name = res->name ?: dev_name(dev);
121
122 if (!devm_request_mem_region(dev, res->start, size, name)) {
123 dev_err(dev, "can't request region for resource %pR\n", res);
124 return ERR_PTR(-EBUSY);
125 }
126
127 if (res->flags & IORESOURCE_CACHEABLE)
128 dest_ptr = devm_ioremap(dev, res->start, size);
129 else
130 dest_ptr = devm_ioremap_nocache(dev, res->start, size);
131
132 if (!dest_ptr) {
133 dev_err(dev, "ioremap failed for resource %pR\n", res);
134 devm_release_mem_region(dev, res->start, size);
135 dest_ptr = ERR_PTR(-ENOMEM);
136 }
137
138 return dest_ptr;
139 }
140 EXPORT_SYMBOL(devm_ioremap_resource);
141
142 /**
143 * devm_request_and_ioremap() - Check, request region, and ioremap resource
144 * @dev: Generic device to handle the resource for
145 * @res: resource to be handled
146 *
147 * Takes all necessary steps to ioremap a mem resource. Uses managed device, so
148 * everything is undone on driver detach. Checks arguments, so you can feed
149 * it the result from e.g. platform_get_resource() directly. Returns the
150 * remapped pointer or NULL on error. Usage example:
151 *
152 * res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
153 * base = devm_request_and_ioremap(&pdev->dev, res);
154 * if (!base)
155 * return -EADDRNOTAVAIL;
156 */
157 void __iomem *devm_request_and_ioremap(struct device *device,
158 struct resource *res)
159 {
160 void __iomem *dest_ptr;
161
162 dest_ptr = devm_ioremap_resource(device, res);
163 if (IS_ERR(dest_ptr))
164 return NULL;
165
166 return dest_ptr;
---
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