ALSA: hda/ca0132 - Simplify alt firmware loading code

ca0132 codec driver loads the firmware selectively depending on the
model in addition to the fallback of the default firmware.  The code
works good, but a minor problem is that the current code seems
confusing for Clang where it spews a warning about uninitialized
variable.

This patch simplifies the code flow for such a false-positive
warning.  After this refactoring, the ca0132_spec.alt_firmware_present
field is no longer used, hence it's eliminated as well.

Reported-and-tested-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c
index 29882bda763289374069ec4777e62b781b416673..e1ebc6d5f38226b10f689b2bc04fd0504331ced2 100644 (file)
--- a/sound/pci/hda/patch_ca0132.c
+++ b/sound/pci/hda/patch_ca0132.c
@@ -1005,7 +1005,6 @@ struct ca0132_spec {
        unsigned int scp_resp_header;
        unsigned int scp_resp_data[4];
        unsigned int scp_resp_count;
-       bool alt_firmware_present;
        bool startup_check_entered;
        bool dsp_reload;
 
@@ -7518,7 +7517,7 @@ static bool ca0132_download_dsp_images(struct hda_codec *codec)
        bool dsp_loaded = false;
        struct ca0132_spec *spec = codec->spec;
        const struct dsp_image_seg *dsp_os_image;
-       const struct firmware *fw_entry;
+       const struct firmware *fw_entry = NULL;
        /*
         * Alternate firmwares for different variants. The Recon3Di apparently
         * can use the default firmware, but I'll leave the option in case
@@ -7529,33 +7528,26 @@ static bool ca0132_download_dsp_images(struct hda_codec *codec)
        case QUIRK_R3D:
        case QUIRK_AE5:
                if (request_firmware(&fw_entry, DESKTOP_EFX_FILE,
-                                       codec->card->dev) != 0) {
+                                       codec->card->dev) != 0)
                        codec_dbg(codec, "Desktop firmware not found.");
-                       spec->alt_firmware_present = false;
-               } else {
+               else
                        codec_dbg(codec, "Desktop firmware selected.");
-                       spec->alt_firmware_present = true;
-               }
                break;
        case QUIRK_R3DI:
                if (request_firmware(&fw_entry, R3DI_EFX_FILE,
-                                       codec->card->dev) != 0) {
+                                       codec->card->dev) != 0)
                        codec_dbg(codec, "Recon3Di alt firmware not detected.");
-                       spec->alt_firmware_present = false;
-               } else {
+               else
                        codec_dbg(codec, "Recon3Di firmware selected.");
-                       spec->alt_firmware_present = true;
-               }
                break;
        default:
-               spec->alt_firmware_present = false;
                break;
        }
        /*
         * Use default ctefx.bin if no alt firmware is detected, or if none
         * exists for your particular codec.
         */
-       if (!spec->alt_firmware_present) {
+       if (!fw_entry) {
                codec_dbg(codec, "Default firmware selected.");
                if (request_firmware(&fw_entry, EFX_FILE,
                                        codec->card->dev) != 0)