ALSA: Echoaudio - Add firmware cache #1

Changes the way the firmware is passed through functions.

When CONFIG_PM is enabled the firmware cannot be released because the
driver will need it again to resume the card. 
With this patch the firmware is passed as an index of the struct
firmware card_fw[] in place of a pointer. That same index is then used
to locate the firmware in the firmware cache.

Signed-off-by: Giuliano Pochini <pochini@shiny.it>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 7 insertions, 1 deletions

diff --git a/sound/pci/echoaudio/echoaudio.c b/sound/pci/echoaudio/echoaudio.c
index 1305f7ca02c3..78fc2637bfa6 100644
--- a/sound/pci/echoaudio/echoaudio.c
+++ b/sound/pci/echoaudio/echoaudio.c
@@ -36,11 +36,15 @@ MODULE_PARM_DESC(enable, "Enable " ECHOCARD_NAME " soundcard.");
 static unsigned int channels_list[10] = {1, 2, 4, 6, 8, 10, 12, 14, 16, 999999};
 static const DECLARE_TLV_DB_SCALE(db_scale_output_gain, -12800, 100, 1);
 
+
+
 static int get_firmware(const struct firmware **fw_entry,
-                        const struct firmware *frm, struct echoaudio *chip)
+                        struct echoaudio *chip, const short fw_index)
 {
         int err;
         char name[30];
+        const struct firmware *frm = &card_fw[fw_index];
+
         DE_ACT(("firmware requested: %s\n", frm->data));
         snprintf(name, sizeof(name), "ea/%s", frm->data);
         if ((err = request_firmware(fw_entry, name, pci_device(chip))) < 0)
@@ -48,6 +52,8 @@ static int get_firmware(const struct firmware **fw_entry,
         return err;
 }
 
+
+
 static void free_firmware(const struct firmware *fw_entry)
 {
         release_firmware(fw_entry);