Merge tag 'cpufreq-arm-updates-6.7-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm

Merge ARM cpufreq updates for 6.7 (part 2) from Viresh kumar:

"- Add support for several Qualcomm SoC versions (Robert Marko and
   Varadarajan Narayanan)."

* tag 'cpufreq-arm-updates-6.7-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
  cpufreq: qcom-nvmem: Introduce cpufreq for ipq95xx
  cpufreq: qcom-nvmem: Enable cpufreq for ipq53xx
  cpufreq: qcom-nvmem: add support for IPQ8074
  soc: qcom: socinfo: Add IDs for IPQ8174 family
  dt-bindings: arm: qcom,ids: Add IDs for IPQ8174 family
  dt-bindings: qcom: geni-se: Allow dma-coherent
  soc: qcom: socinfo: Add SoC ID for QCM6490
  dt-bindings: arm: qcom,ids: Add SoC ID for QCM6490
  soc: qcom: socinfo: Add SM8550-adjacent PMICs
  soc: qcom: wcnss_ctrl: Remove redundant initialization owner in wcnss_ctrl_driver
  soc: qcom: socinfo: Add Soc ID for SM7150P
  dt-bindings: arm: qcom,ids: Add Soc ID for SM7150P
  firmware: Add support for Qualcomm UEFI Secure Application
  firmware: qcom_scm: Add support for Qualcomm Secure Execution Environment SCM interface
  lib/ucs2_string: Add UCS-2 strscpy function

1 files changed, 52 insertions, 0 deletions

diff --git a/lib/ucs2_string.c b/lib/ucs2_string.c
index 0a559a42359b..9308bcfb2ad5 100644
--- a/lib/ucs2_string.c
+++ b/lib/ucs2_string.c
@@ -32,6 +32,58 @@ ucs2_strsize(const ucs2_char_t *data, unsigned long maxlength)
 }
 EXPORT_SYMBOL(ucs2_strsize);
 
+/**
+ * ucs2_strscpy() - Copy a UCS2 string into a sized buffer.
+ *
+ * @dst: Pointer to the destination buffer where to copy the string to.
+ * @src: Pointer to the source buffer where to copy the string from.
+ * @count: Size of the destination buffer, in UCS2 (16-bit) characters.
+ *
+ * Like strscpy(), only for UCS2 strings.
+ *
+ * Copy the source string @src, or as much of it as fits, into the destination
+ * buffer @dst. The behavior is undefined if the string buffers overlap. The
+ * destination buffer @dst is always NUL-terminated, unless it's zero-sized.
+ *
+ * Return: The number of characters copied into @dst (excluding the trailing
+ * %NUL terminator) or -E2BIG if @count is 0 or @src was truncated due to the
+ * destination buffer being too small.
+ */
+ssize_t ucs2_strscpy(ucs2_char_t *dst, const ucs2_char_t *src, size_t count)
+{
+	long res;
+
+	/*
+	 * Ensure that we have a valid amount of space. We need to store at
+	 * least one NUL-character.
+	 */
+	if (count == 0 || WARN_ON_ONCE(count > INT_MAX / sizeof(*dst)))
+		return -E2BIG;
+
+	/*
+	 * Copy at most 'count' characters, return early if we find a
+	 * NUL-terminator.
+	 */
+	for (res = 0; res < count; res++) {
+		ucs2_char_t c;
+
+		c = src[res];
+		dst[res] = c;
+
+		if (!c)
+			return res;
+	}
+
+	/*
+	 * The loop above terminated without finding a NUL-terminator,
+	 * exceeding the 'count': Enforce proper NUL-termination and return
+	 * error.
+	 */
+	dst[count - 1] = 0;
+	return -E2BIG;
+}
+EXPORT_SYMBOL(ucs2_strscpy);
+
 int
 ucs2_strncmp(const ucs2_char_t *a, const ucs2_char_t *b, size_t len)
 {