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-rw-r--r--lib/Kconfig4
-rw-r--r--lib/iommu-helper.c9
-rw-r--r--lib/vsprintf.c12
3 files changed, 23 insertions, 2 deletions
diff --git a/lib/Kconfig b/lib/Kconfig
index c7ad7a5..85cf7ea 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -8,10 +8,10 @@ config BITREVERSE
tristate
config GENERIC_FIND_FIRST_BIT
- def_bool n
+ bool
config GENERIC_FIND_NEXT_BIT
- def_bool n
+ bool
config CRC_CCITT
tristate "CRC-CCITT functions"
diff --git a/lib/iommu-helper.c b/lib/iommu-helper.c
index 5d90074..75dbda0 100644
--- a/lib/iommu-helper.c
+++ b/lib/iommu-helper.c
@@ -79,3 +79,12 @@ void iommu_area_free(unsigned long *map, unsigned long start, unsigned int nr)
}
}
EXPORT_SYMBOL(iommu_area_free);
+
+unsigned long iommu_num_pages(unsigned long addr, unsigned long len,
+ unsigned long io_page_size)
+{
+ unsigned long size = (addr & (io_page_size - 1)) + len;
+
+ return DIV_ROUND_UP(size, io_page_size);
+}
+EXPORT_SYMBOL(iommu_num_pages);
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index c399bc1..4c6674a 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -565,6 +565,10 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr, int field
* @fmt: The format string to use
* @args: Arguments for the format string
*
+ * This function follows C99 vsnprintf, but has some extensions:
+ * %pS output the name of a text symbol
+ * %pF output the name of a function pointer
+ *
* The return value is the number of characters which would
* be generated for the given input, excluding the trailing
* '\0', as per ISO C99. If you want to have the exact
@@ -806,6 +810,8 @@ EXPORT_SYMBOL(vsnprintf);
*
* Call this function if you are already dealing with a va_list.
* You probably want scnprintf() instead.
+ *
+ * See the vsnprintf() documentation for format string extensions over C99.
*/
int vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
{
@@ -828,6 +834,8 @@ EXPORT_SYMBOL(vscnprintf);
* generated for the given input, excluding the trailing null,
* as per ISO C99. If the return is greater than or equal to
* @size, the resulting string is truncated.
+ *
+ * See the vsnprintf() documentation for format string extensions over C99.
*/
int snprintf(char * buf, size_t size, const char *fmt, ...)
{
@@ -877,6 +885,8 @@ EXPORT_SYMBOL(scnprintf);
*
* Call this function if you are already dealing with a va_list.
* You probably want sprintf() instead.
+ *
+ * See the vsnprintf() documentation for format string extensions over C99.
*/
int vsprintf(char *buf, const char *fmt, va_list args)
{
@@ -894,6 +904,8 @@ EXPORT_SYMBOL(vsprintf);
* The function returns the number of characters written
* into @buf. Use snprintf() or scnprintf() in order to avoid
* buffer overflows.
+ *
+ * See the vsnprintf() documentation for format string extensions over C99.
*/
int sprintf(char * buf, const char *fmt, ...)
{