[media] media: tuner xc5000 - release firmwware from xc5000_release()

xc5000 releases firmware right after loading it. Change it to
save the firmware and release it from xc5000_release(). This
helps avoid fecthing firmware when forced firmware load requests
come in to change analog tv frequence and when firmware needs to
be reloaded after suspend and resume.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

1 files changed, 20 insertions, 14 deletions

diff --git a/drivers/media/tuners/xc5000.c b/drivers/media/tuners/xc5000.c
index 512fe508bcd2..b72ec64b758c 100644
--- a/drivers/media/tuners/xc5000.c
+++ b/drivers/media/tuners/xc5000.c
@@ -70,6 +70,8 @@ struct xc5000_priv {
 
         struct dvb_frontend *fe;
         struct delayed_work timer_sleep;
+
+        const struct firmware   *firmware;
 };
 
 /* Misc Defines */
@@ -1136,20 +1138,23 @@ static int xc_load_fw_and_init_tuner(struct dvb_frontend *fe, int force)
         if (!force && xc5000_is_firmware_loaded(fe) == 0)
                 return 0;
 
-        ret = request_firmware(&fw, desired_fw->name,
-                               priv->i2c_props.adap->dev.parent);
-        if (ret) {
-                printk(KERN_ERR "xc5000: Upload failed. (file not found?)\n");
-                return ret;
-        }
-
-        dprintk(1, "firmware read %Zu bytes.\n", fw->size);
+        if (!priv->firmware) {
+                ret = request_firmware(&fw, desired_fw->name,
+                                        priv->i2c_props.adap->dev.parent);
+                if (ret) {
+                        pr_err("xc5000: Upload failed. rc %d\n", ret);
+                        return ret;
+                }
+                dprintk(1, "firmware read %Zu bytes.\n", fw->size);
 
-        if (fw->size != desired_fw->size) {
-                printk(KERN_ERR "xc5000: Firmware file with incorrect size\n");
-                ret = -EINVAL;
-                goto err;
-        }
+                if (fw->size != desired_fw->size) {
+                        pr_err("xc5000: Firmware file with incorrect size\n");
+                        release_firmware(fw);
+                        return -EINVAL;
+                }
+                priv->firmware = fw;
+        } else
+                fw = priv->firmware;
 
         /* Try up to 5 times to load firmware */
         for (i = 0; i < 5; i++) {
@@ -1232,7 +1237,6 @@ err:
         else
                 printk(KERN_CONT " - too many retries. Giving up\n");
 
-        release_firmware(fw);
         return ret;
 }
 
@@ -1316,6 +1320,8 @@ static int xc5000_release(struct dvb_frontend *fe)
         if (priv) {
                 cancel_delayed_work(&priv->timer_sleep);
                 hybrid_tuner_release_state(priv);
+                if (priv->firmware)
+                        release_firmware(priv->firmware);
         }
 
         mutex_unlock(&xc5000_list_mutex);