From: Vadim Pasternak vadimp@mellanox.com
[ Upstream commit 58eeba0bdb52afe5c18ce2a760ca9fe2901943e9 ]
Provide the helpers for string conversions to upper and lower cases.
Signed-off-by: Vadim Pasternak vadimp@mellanox.com Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Stable-dep-of: 3c0f4f09c063 ("usb: gadget: u_ether: Fix host MAC address case") Signed-off-by: Sasha Levin sashal@kernel.org --- include/linux/string_helpers.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/include/linux/string_helpers.h b/include/linux/string_helpers.h index c289551322342..86f150c2a6b66 100644 --- a/include/linux/string_helpers.h +++ b/include/linux/string_helpers.h @@ -2,6 +2,7 @@ #ifndef _LINUX_STRING_HELPERS_H_ #define _LINUX_STRING_HELPERS_H_
+#include <linux/ctype.h> #include <linux/types.h>
struct file; @@ -75,6 +76,20 @@ static inline int string_escape_str_any_np(const char *src, char *dst, return string_escape_str(src, dst, sz, ESCAPE_ANY_NP, only); }
+static inline void string_upper(char *dst, const char *src) +{ + do { + *dst++ = toupper(*src); + } while (*src++); +} + +static inline void string_lower(char *dst, const char *src) +{ + do { + *dst++ = tolower(*src); + } while (*src++); +} + char *kstrdup_quotable(const char *src, gfp_t gfp); char *kstrdup_quotable_cmdline(struct task_struct *task, gfp_t gfp); char *kstrdup_quotable_file(struct file *file, gfp_t gfp);