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author | Felix Fietkau <nbd@openwrt.org> | 2015-03-19 11:58:59 +0000 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2015-03-19 11:58:59 +0000 |
commit | 3ab6563711e606f772c545f907eee6c21db60683 (patch) | |
tree | 33f0aae76063bdfb7f8ad7e83da3160437dd8ecc /target/linux/generic/patches-3.8/030-backport-lib-devres-Introduce-devm_ioremap_resource.patch | |
parent | d121ed26a1b992b828a4675a62287d542b93bc73 (diff) | |
download | master-187ad058-3ab6563711e606f772c545f907eee6c21db60683.tar.gz master-187ad058-3ab6563711e606f772c545f907eee6c21db60683.tar.bz2 master-187ad058-3ab6563711e606f772c545f907eee6c21db60683.zip |
kernel: remove linux 3.8 support
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@44890 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/generic/patches-3.8/030-backport-lib-devres-Introduce-devm_ioremap_resource.patch')
-rw-r--r-- | target/linux/generic/patches-3.8/030-backport-lib-devres-Introduce-devm_ioremap_resource.patch | 251 |
1 files changed, 0 insertions, 251 deletions
diff --git a/target/linux/generic/patches-3.8/030-backport-lib-devres-Introduce-devm_ioremap_resource.patch b/target/linux/generic/patches-3.8/030-backport-lib-devres-Introduce-devm_ioremap_resource.patch deleted file mode 100644 index b90222348e..0000000000 --- a/target/linux/generic/patches-3.8/030-backport-lib-devres-Introduce-devm_ioremap_resource.patch +++ /dev/null @@ -1,251 +0,0 @@ -From 75096579c3ac39ddc2f8b0d9a8924eba31f4d920 Mon Sep 17 00:00:00 2001 -From: Thierry Reding <thierry.reding@avionic-design.de> -Date: Mon, 21 Jan 2013 11:08:54 +0100 -Subject: [PATCH] lib: devres: Introduce devm_ioremap_resource() - -The devm_request_and_ioremap() function is very useful and helps avoid a -whole lot of boilerplate. However, one issue that keeps popping up is -its lack of a specific error code to determine which of the steps that -it performs failed. Furthermore, while the function gives an example and -suggests what error code to return on failure, a wide variety of error -codes are used throughout the tree. - -In an attempt to fix these problems, this patch adds a new function that -drivers can transition to. The devm_ioremap_resource() returns a pointer -to the remapped I/O memory on success or an ERR_PTR() encoded error code -on failure. Callers can check for failure using IS_ERR() and determine -its cause by extracting the error code using PTR_ERR(). - -devm_request_and_ioremap() is implemented as a wrapper around the new -API and return NULL on failure as before. This ensures that backwards -compatibility is maintained until all users have been converted to the -new API, at which point the old devm_request_and_ioremap() function -should be removed. - -A semantic patch is included which can be used to convert from the old -devm_request_and_ioremap() API to the new devm_ioremap_resource() API. -Some non-trivial cases may require manual intervention, though. - -Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> -Cc: Arnd Bergmann <arnd@arndb.de> -Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - Documentation/driver-model/devres.txt | 3 +- - include/linux/device.h | 1 + - lib/devres.c | 57 ++++++++++--- - scripts/coccinelle/api/devm_ioremap_resource.cocci | 90 ++++++++++++++++++++ - 4 files changed, 137 insertions(+), 14 deletions(-) - create mode 100644 scripts/coccinelle/api/devm_ioremap_resource.cocci - ---- a/Documentation/driver-model/devres.txt -+++ b/Documentation/driver-model/devres.txt -@@ -266,7 +266,8 @@ IOMAP - devm_ioremap() - devm_ioremap_nocache() - devm_iounmap() -- devm_request_and_ioremap() : checks resource, requests region, ioremaps -+ devm_ioremap_resource() : checks resource, requests memory region, ioremaps -+ devm_request_and_ioremap() : obsoleted by devm_ioremap_resource() - pcim_iomap() - pcim_iounmap() - pcim_iomap_table() : array of mapped addresses indexed by BAR ---- a/include/linux/device.h -+++ b/include/linux/device.h -@@ -573,6 +573,7 @@ extern int devres_release_group(struct d - extern void *devm_kzalloc(struct device *dev, size_t size, gfp_t gfp); - extern void devm_kfree(struct device *dev, void *p); - -+void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res); - void __iomem *devm_request_and_ioremap(struct device *dev, - struct resource *res); - ---- a/lib/devres.c -+++ b/lib/devres.c -@@ -86,22 +86,24 @@ void devm_iounmap(struct device *dev, vo - EXPORT_SYMBOL(devm_iounmap); - - /** -- * devm_request_and_ioremap() - Check, request region, and ioremap resource -- * @dev: Generic device to handle the resource for -+ * devm_ioremap_resource() - check, request region, and ioremap resource -+ * @dev: generic device to handle the resource for - * @res: resource to be handled - * -- * Takes all necessary steps to ioremap a mem resource. Uses managed device, so -- * everything is undone on driver detach. Checks arguments, so you can feed -- * it the result from e.g. platform_get_resource() directly. Returns the -- * remapped pointer or NULL on error. Usage example: -+ * Checks that a resource is a valid memory region, requests the memory region -+ * and ioremaps it either as cacheable or as non-cacheable memory depending on -+ * the resource's flags. All operations are managed and will be undone on -+ * driver detach. -+ * -+ * Returns a pointer to the remapped memory or an ERR_PTR() encoded error code -+ * on failure. Usage example: - * - * res = platform_get_resource(pdev, IORESOURCE_MEM, 0); -- * base = devm_request_and_ioremap(&pdev->dev, res); -- * if (!base) -- * return -EADDRNOTAVAIL; -+ * base = devm_ioremap_resource(&pdev->dev, res); -+ * if (IS_ERR(base)) -+ * return PTR_ERR(base); - */ --void __iomem *devm_request_and_ioremap(struct device *dev, -- struct resource *res) -+void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res) - { - resource_size_t size; - const char *name; -@@ -111,7 +113,7 @@ void __iomem *devm_request_and_ioremap(s - - if (!res || resource_type(res) != IORESOURCE_MEM) { - dev_err(dev, "invalid resource\n"); -- return NULL; -+ return ERR_PTR(-EINVAL); - } - - size = resource_size(res); -@@ -119,7 +121,7 @@ void __iomem *devm_request_and_ioremap(s - - if (!devm_request_mem_region(dev, res->start, size, name)) { - dev_err(dev, "can't request region for resource %pR\n", res); -- return NULL; -+ return ERR_PTR(-EBUSY); - } - - if (res->flags & IORESOURCE_CACHEABLE) -@@ -130,10 +132,39 @@ void __iomem *devm_request_and_ioremap(s - if (!dest_ptr) { - dev_err(dev, "ioremap failed for resource %pR\n", res); - devm_release_mem_region(dev, res->start, size); -+ dest_ptr = ERR_PTR(-ENOMEM); - } - - return dest_ptr; - } -+EXPORT_SYMBOL(devm_ioremap_resource); -+ -+/** -+ * devm_request_and_ioremap() - Check, request region, and ioremap resource -+ * @dev: Generic device to handle the resource for -+ * @res: resource to be handled -+ * -+ * Takes all necessary steps to ioremap a mem resource. Uses managed device, so -+ * everything is undone on driver detach. Checks arguments, so you can feed -+ * it the result from e.g. platform_get_resource() directly. Returns the -+ * remapped pointer or NULL on error. Usage example: -+ * -+ * res = platform_get_resource(pdev, IORESOURCE_MEM, 0); -+ * base = devm_request_and_ioremap(&pdev->dev, res); -+ * if (!base) -+ * return -EADDRNOTAVAIL; -+ */ -+void __iomem *devm_request_and_ioremap(struct device *device, -+ struct resource *res) -+{ -+ void __iomem *dest_ptr; -+ -+ dest_ptr = devm_ioremap_resource(device, res); -+ if (IS_ERR(dest_ptr)) -+ return NULL; -+ -+ return dest_ptr; -+} - EXPORT_SYMBOL(devm_request_and_ioremap); - - #ifdef CONFIG_HAS_IOPORT ---- /dev/null -+++ b/scripts/coccinelle/api/devm_ioremap_resource.cocci -@@ -0,0 +1,90 @@ -+virtual patch -+virtual report -+ -+@depends on patch@ -+expression base, dev, res; -+@@ -+ -+-base = devm_request_and_ioremap(dev, res); -++base = devm_ioremap_resource(dev, res); -+ ... -+ if ( -+-base == NULL -++IS_ERR(base) -+ || ...) { -+<... -+- return ...; -++ return PTR_ERR(base); -+...> -+ } -+ -+@depends on patch@ -+expression e, E, ret; -+identifier l; -+@@ -+ -+ e = devm_ioremap_resource(...); -+ ... -+ if (IS_ERR(e) || ...) { -+ ... when any -+- ret = E; -++ ret = PTR_ERR(e); -+ ... -+( -+ return ret; -+| -+ goto l; -+) -+ } -+ -+@depends on patch@ -+expression e; -+@@ -+ -+ e = devm_ioremap_resource(...); -+ ... -+ if (IS_ERR(e) || ...) { -+ ... -+- \(dev_dbg\|dev_err\|pr_debug\|pr_err\|DRM_ERROR\)(...); -+ ... -+ } -+ -+@depends on patch@ -+expression e; -+identifier l; -+@@ -+ -+ e = devm_ioremap_resource(...); -+ ... -+ if (IS_ERR(e) || ...) -+-{ -+( -+ return ...; -+| -+ goto l; -+) -+-} -+ -+@r depends on report@ -+expression e; -+identifier l; -+position p1; -+@@ -+ -+*e = devm_request_and_ioremap@p1(...); -+ ... -+ if (e == NULL || ...) { -+ ... -+( -+ return ...; -+| -+ goto l; -+) -+ } -+ -+@script:python depends on r@ -+p1 << r.p1; -+@@ -+ -+msg = "ERROR: deprecated devm_request_and_ioremap() API used on line %s" % (p1[0].line) -+coccilib.report.print_report(p1[0], msg) |