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authorHimangi Saraogi <himangi774@gmail.com>2014-07-17 02:27:52 +0530
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-07-17 18:26:44 -0700
commit75f2a4ead5d5890ada9c2663a70fb58613c0d9f2 (patch)
treea1eecedee8e357a88fb7a8ebdcf179946dbd5bc2 /drivers/base
parent871379dc0fd9748892bdf10536f2664751a7819c (diff)
downloadop-kernel-dev-75f2a4ead5d5890ada9c2663a70fb58613c0d9f2.zip
op-kernel-dev-75f2a4ead5d5890ada9c2663a70fb58613c0d9f2.tar.gz
devres: Add devm_kasprintf and devm_kvasprintf API
devm_kasprintf() and devm_kvasprintf() are the managed counterparts for kasprintf() and kvasprintf(). Signed-off-by: Himangi Saraogi <himangi774@gmail.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/devres.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/base/devres.c b/drivers/base/devres.c
index 5230294..69d9b0c 100644
--- a/drivers/base/devres.c
+++ b/drivers/base/devres.c
@@ -817,6 +817,61 @@ char *devm_kstrdup(struct device *dev, const char *s, gfp_t gfp)
EXPORT_SYMBOL_GPL(devm_kstrdup);
/**
+ * devm_kvasprintf - Allocate resource managed space
+ * for the formatted string.
+ * @dev: Device to allocate memory for
+ * @gfp: the GFP mask used in the devm_kmalloc() call when
+ * allocating memory
+ * @fmt: the formatted string to duplicate
+ * @ap: the list of tokens to be placed in the formatted string
+ * RETURNS:
+ * Pointer to allocated string on success, NULL on failure.
+ */
+char *devm_kvasprintf(struct device *dev, gfp_t gfp, const char *fmt,
+ va_list ap)
+{
+ unsigned int len;
+ char *p;
+ va_list aq;
+
+ va_copy(aq, ap);
+ len = vsnprintf(NULL, 0, fmt, aq);
+ va_end(aq);
+
+ p = devm_kmalloc(dev, len+1, gfp);
+ if (!p)
+ return NULL;
+
+ vsnprintf(p, len+1, fmt, ap);
+
+ return p;
+}
+EXPORT_SYMBOL(devm_kvasprintf);
+
+/**
+ * devm_kasprintf - Allocate resource managed space
+ * and copy an existing formatted string into that
+ * @dev: Device to allocate memory for
+ * @gfp: the GFP mask used in the devm_kmalloc() call when
+ * allocating memory
+ * @fmt: the string to duplicate
+ * RETURNS:
+ * Pointer to allocated string on success, NULL on failure.
+ */
+char *devm_kasprintf(struct device *dev, gfp_t gfp, const char *fmt, ...)
+{
+ va_list ap;
+ char *p;
+
+ va_start(ap, fmt);
+ p = devm_kvasprintf(dev, gfp, fmt, ap);
+ va_end(ap);
+
+ return p;
+}
+EXPORT_SYMBOL_GPL(devm_kasprintf);
+
+/**
* devm_kfree - Resource-managed kfree
* @dev: Device this memory belongs to
* @p: Memory to free
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