ASoC: wm8993: Refactor set_pll code to avoid GCC warnings

Refactor set_pll code to avoid the following warnings:

sound/soc/codecs/wm8983.c:873:40: warning: 'pll_div.k' may be used uninitialized in this function [-Wuninitialized]
sound/soc/codecs/wm8983.c:870:9: warning: 'pll_div.n' may be used uninitialized in this function [-Wuninitialized]
sound/soc/codecs/wm8983.c:869:23: warning: 'pll_div.div2' may be used uninitialized in this function [-Wuninitialized]

Do the same as in commit 86ce6c9a (ASoC: WM8804: Refactor set_pll code to avoid
GCC warnings).

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 22 insertions, 19 deletions

diff --git a/sound/soc/codecs/wm8983.c b/sound/soc/codecs/wm8983.c
index 9fe1e041da49..c9c707b8698f 100644
--- a/sound/soc/codecs/wm8983.c
+++ b/sound/soc/codecs/wm8983.c
@@ -851,30 +851,33 @@ static int wm8983_set_pll(struct snd_soc_dai *dai, int pll_id,
         struct pll_div pll_div;
 
         codec = dai->codec;
-        if (freq_in && freq_out) {
+        if (!freq_in || !freq_out) {
+                /* disable the PLL */
+                snd_soc_update_bits(codec, WM8983_POWER_MANAGEMENT_1,
+                                    WM8983_PLLEN_MASK, 0);
+                return 0;
+        } else {
                 ret = pll_factors(&pll_div, freq_out * 4 * 2, freq_in);
                 if (ret)
                         return ret;
-        }
-
-        /* disable the PLL before re-programming it */
-        snd_soc_update_bits(codec, WM8983_POWER_MANAGEMENT_1,
-                            WM8983_PLLEN_MASK, 0);
 
-        if (!freq_in || !freq_out)
-                return 0;
+                /* disable the PLL before re-programming it */
+                snd_soc_update_bits(codec, WM8983_POWER_MANAGEMENT_1,
+                                    WM8983_PLLEN_MASK, 0);
+
+                /* set PLLN and PRESCALE */
+                snd_soc_write(codec, WM8983_PLL_N,
+                        (pll_div.div2 << WM8983_PLL_PRESCALE_SHIFT)
+                        | pll_div.n);
+                /* set PLLK */
+                snd_soc_write(codec, WM8983_PLL_K_3, pll_div.k & 0x1ff);
+                snd_soc_write(codec, WM8983_PLL_K_2, (pll_div.k >> 9) & 0x1ff);
+                snd_soc_write(codec, WM8983_PLL_K_1, (pll_div.k >> 18));
+                /* enable the PLL */
+                snd_soc_update_bits(codec, WM8983_POWER_MANAGEMENT_1,
+                                        WM8983_PLLEN_MASK, WM8983_PLLEN);
+        }
 
-        /* set PLLN and PRESCALE */
-        snd_soc_write(codec, WM8983_PLL_N,
-                      (pll_div.div2 << WM8983_PLL_PRESCALE_SHIFT)
-                      | pll_div.n);
-        /* set PLLK */
-        snd_soc_write(codec, WM8983_PLL_K_3, pll_div.k & 0x1ff);
-        snd_soc_write(codec, WM8983_PLL_K_2, (pll_div.k >> 9) & 0x1ff);
-        snd_soc_write(codec, WM8983_PLL_K_1, (pll_div.k >> 18));
-        /* enable the PLL */
-        snd_soc_update_bits(codec, WM8983_POWER_MANAGEMENT_1,
-                            WM8983_PLLEN_MASK, WM8983_PLLEN);
         return 0;
 }