Ensure i2s->op_clk is not used when clk_get() for this clock fails. This prevents working with an incorrectly configured clock in some conditions.
Signed-off-by: Sylwester Nawrocki <[email protected]> --- sound/soc/samsung/i2s.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c index ae02811..a634a66 100644 --- a/sound/soc/samsung/i2s.c +++ b/sound/soc/samsung/i2s.c @@ -488,7 +488,7 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, clk_id = 1; if (!any_active(i2s)) { - if (i2s->op_clk) { + if (i2s->op_clk && !IS_ERR(i2s->op_clk)) { if ((clk_id && !(mod & MOD_IMS_SYSMUX)) || (!clk_id && (mod & MOD_IMS_SYSMUX))) { clk_disable_unprepare(i2s->op_clk); @@ -506,6 +506,10 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, else i2s->op_clk = clk_get(&i2s->pdev->dev, "i2s_opclk0"); + + if (WARN_ON(IS_ERR(i2s->op_clk))) + return PTR_ERR(i2s->op_clk); + clk_prepare_enable(i2s->op_clk); i2s->rclk_srcrate = clk_get_rate(i2s->op_clk); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
