diff options
| author | Stephen Warren <swarren@nvidia.com> | 2011-12-01 13:49:19 -0700 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-12-02 10:35:25 +0000 |
| commit | 6f526f0a86dbb22fd2fc5a873f55c9e2341a79c0 (patch) | |
| tree | b083b7340cd2b765bea1737f721ce817d1f1c3b0 /sound/soc/codecs/wm8903.c | |
| parent | 84b315ee893676e9a9ce8ac42ab5ef44e2af3ee1 (diff) | |
| download | talos-obmc-linux-6f526f0a86dbb22fd2fc5a873f55c9e2341a79c0.tar.gz talos-obmc-linux-6f526f0a86dbb22fd2fc5a873f55c9e2341a79c0.zip | |
ASoC: WM8903: Disallow all invalid gpio_cfg pdata values
The GPIO registers are 15 bits wide. Hence values, higher than 0x7fff are
not legal GPIO register values. Modify the pdata.gpio_cfg handling code
to reject all illegal values, not just WM8903_GPIO_NO_CONFIG (0x8000). This
will allow the later use of 0xffffffff as an invalid value in future device
tree bindings, meaning "don't touch this GPIO's configuration".
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/codecs/wm8903.c')
| -rw-r--r-- | sound/soc/codecs/wm8903.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c index d663c97785d7..60ad8cdc046c 100644 --- a/sound/soc/codecs/wm8903.c +++ b/sound/soc/codecs/wm8903.c @@ -1936,11 +1936,11 @@ static int wm8903_probe(struct snd_soc_codec *codec) bool mic_gpio = false; for (i = 0; i < ARRAY_SIZE(pdata->gpio_cfg); i++) { - if (pdata->gpio_cfg[i] == WM8903_GPIO_NO_CONFIG) + if (pdata->gpio_cfg[i] > 0x7fff) continue; snd_soc_write(codec, WM8903_GPIO_CONTROL_1 + i, - pdata->gpio_cfg[i] & 0xffff); + pdata->gpio_cfg[i] & 0x7fff); val = (pdata->gpio_cfg[i] & WM8903_GP1_FN_MASK) >> WM8903_GP1_FN_SHIFT; |
