There's no need to overwrite fwf_name with a kstrdup() of the cs_dsp part
name. It is trivial to select either fwf_name or cs_dsp.part as the string
to use when building the filename in wm_adsp_request_firmware_file().
This leaves fwf_name entirely owned by the codec driver.
It also avoids problems with freeing the pointer. With the original code
fwf_name was either a pointer owned by the codec driver, or a kstrdup()
created by wm_adsp. This meant wm_adsp must free it if it set it, but not
if the codec driver set it. The code was handling this by using
devm_kstrdup().
But there is no absolute requirement that wm_adsp_common_init() must be
called from probe(), so this was a pseudo-memory leak - each new call to
wm_adsp_common_init() would allocate another block of memory but these
would only be freed if the owning codec driver was removed.
Signed-off-by: Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>
---
sound/soc/codecs/wm_adsp.c | 29 ++++++++++++-----------------
1 file changed, 12 insertions(+), 17 deletions(-)
diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index bd60ceebb6a9..36ea0dcdc7ab 100644
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -739,19 +739,25 @@ static int wm_adsp_request_firmware_file(struct wm_adsp *dsp,
const char *filetype)
{
struct cs_dsp *cs_dsp = &dsp->cs_dsp;
+ const char *fwf;
char *s, c;
int ret = 0;
+ if (dsp->fwf_name)
+ fwf = dsp->fwf_name;
+ else
+ fwf = dsp->cs_dsp.name;
+
if (system_name && asoc_component_prefix)
*filename = kasprintf(GFP_KERNEL, "%s%s-%s-%s-%s-%s.%s", dir, dsp->part,
- dsp->fwf_name, wm_adsp_fw[dsp->fw].file, system_name,
+ fwf, wm_adsp_fw[dsp->fw].file, system_name,
asoc_component_prefix, filetype);
else if (system_name)
*filename = kasprintf(GFP_KERNEL, "%s%s-%s-%s-%s.%s", dir, dsp->part,
- dsp->fwf_name, wm_adsp_fw[dsp->fw].file, system_name,
+ fwf, wm_adsp_fw[dsp->fw].file, system_name,
filetype);
else
- *filename = kasprintf(GFP_KERNEL, "%s%s-%s-%s.%s", dir, dsp->part, dsp->fwf_name,
+ *filename = kasprintf(GFP_KERNEL, "%s%s-%s-%s.%s", dir, dsp->part, fwf,
wm_adsp_fw[dsp->fw].file, filetype);
if (*filename == NULL)
@@ -857,29 +863,18 @@ static int wm_adsp_request_firmware_files(struct wm_adsp *dsp,
}
adsp_err(dsp, "Failed to request firmware <%s>%s-%s-%s<-%s<%s>>.wmfw\n",
- cirrus_dir, dsp->part, dsp->fwf_name, wm_adsp_fw[dsp->fw].file,
- system_name, asoc_component_prefix);
+ cirrus_dir, dsp->part,
+ dsp->fwf_name ? dsp->fwf_name : dsp->cs_dsp.name,
+ wm_adsp_fw[dsp->fw].file, system_name, asoc_component_prefix);
return -ENOENT;
}
static int wm_adsp_common_init(struct wm_adsp *dsp)
{
- char *p;
-
INIT_LIST_HEAD(&dsp->compr_list);
INIT_LIST_HEAD(&dsp->buffer_list);
- if (!dsp->fwf_name) {
- p = devm_kstrdup(dsp->cs_dsp.dev, dsp->cs_dsp.name, GFP_KERNEL);
- if (!p)
- return -ENOMEM;
-
- dsp->fwf_name = p;
- for (; *p != 0; ++p)
- *p = tolower(*p);
- }
-
return 0;
}
--
2.39.2
