ASoC: cht_bsw_rt5645: Fix writing to string literal

We cannot use strcpy() to write to a const char * location. This is
causing a 'BUG: unable to handle kernel paging request' error at boot
when using the cht-bsw-rt5645 driver.

With this patch we also fix a wrong indexing in the driver where the
codec_name of the wrong dai_link is being overwritten.

Signed-off-by: Carlo Caione <carlo@endlessm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/intel/boards/cht_bsw_rt5645.c b/sound/soc/intel/boards/cht_bsw_rt5645.c
index 2d3afddb0a2e8c83fef54b36eed42d7ff6b69878..a7b96a9a4e0ecb57876413c848cfa91359d42a92 100644 (file)
--- a/sound/soc/intel/boards/cht_bsw_rt5645.c
+++ b/sound/soc/intel/boards/cht_bsw_rt5645.c
@@ -367,8 +367,12 @@ static int snd_cht_mc_probe(struct platform_device *pdev)
        }
        card->dev = &pdev->dev;
        sprintf(codec_name, "i2c-%s:00", drv->acpi_card->codec_id);
+
        /* set correct codec name */
-       strcpy((char *)card->dai_link[2].codec_name, codec_name);
+       for (i = 0; i < ARRAY_SIZE(cht_dailink); i++)
+               if (!strcmp(card->dai_link[i].codec_name, "i2c-10EC5645:00"))
+                       card->dai_link[i].codec_name = kstrdup(codec_name, GFP_KERNEL);
+
        snd_soc_card_set_drvdata(card, drv);
        ret_val = devm_snd_soc_register_card(&pdev->dev, card);
        if (ret_val) {