On 30/05/2023 08:39, Claudiu.Beznea@xxxxxxxxxxxxx wrote:
On 26.05.2023 15:28, Richard Fitzgerald wrote:
+static int cs35l56_hda_request_firmware_file(struct cs35l56_hda *cs35l56,
+ const struct firmware **firmware, char **filename,
+ const char *dir, const char *system_name,
+ const char *amp_name,
+ const char *filetype)
+{
+ char *s, c;
+ int ret = 0;
+
+ if (system_name && amp_name)
+ *filename = kasprintf(GFP_KERNEL, "%scs35l56%s-%02x-dsp1-misc-%s-%s.%s", dir,
+ cs35l56->base.secured ? "s" : "", cs35l56->base.rev,
+ system_name, amp_name, filetype);
+ else if (system_name)
+ *filename = kasprintf(GFP_KERNEL, "%scs35l56%s-%02x-dsp1-misc-%s.%s", dir,
+ cs35l56->base.secured ? "s" : "", cs35l56->base.rev,
+ system_name, filetype);
+ else
+ *filename = kasprintf(GFP_KERNEL, "%scs35l56%s-%02x-dsp1-misc.%s", dir,
+ cs35l56->base.secured ? "s" : "", cs35l56->base.rev,
+ filetype);
+
+ if (!*filename)
+ return -ENOMEM;
+
+ /*
+ * Make sure that filename is lower-case and any non alpha-numeric
+ * characters except full stop and forward slash are replaced with
+ * hyphens.
+ */
+ s = *filename;
+ while (*s) {
+ c = *s;
+ if (isalnum(c))
+ *s = tolower(c);
+ else if (c != '.' && c != '/')
+ *s = '-';
+ s++;
+ }
+
+ ret = firmware_request_nowarn(firmware, *filename, cs35l56->base.dev);
+ if (ret) {
+ dev_dbg(cs35l56->base.dev, "Failed to request '%s'\n", *filename);
+ kfree(*filename);
+ *filename = NULL;
+ } else {
+ dev_dbg(cs35l56->base.dev, "Found '%s'\n", *filename);
I may be wrong but *filename seems leaked to me on this path. I noticed it
is could be duplicated on cs_dsp_debugfs_save_wmfwname() but the original
copy seems left aside.
It's not a leak. The file has been found so the name of the found
file is returned (it's used by other code). But there is a leak of that
memory elsewhere.
+ }
+
+ return ret;
+}