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SubjectRe: [PATCH] ASoC: samsung: Fix checking return value of clk_get
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On Tue, 2011-09-13 at 22:44 +0800, Axel Lin wrote:
> clk_get() returns a pointer to the struct clk or an ERR_PTR().
>
> Signed-off-by: Axel Lin <axel.lin@gmail.com>
> Cc: Christian Pellegrin <chripell@evolware.org>
> Cc: Ben Dooks <ben@simtec.co.uk>
> Cc: Sangbeom Kim <sbkim73@samsung.com>
> Cc: Jassi Brar <jassisinghbrar@gmail.com>
> ---
> sound/soc/samsung/s3c2412-i2s.c | 2 +-
> sound/soc/samsung/s3c24xx-i2s.c | 2 +-
> sound/soc/samsung/s3c24xx_uda134x.c | 4 ++--
> 3 files changed, 4 insertions(+), 4 deletions(-)

Acked-by: Liam Girdwood <lrg@ti.com>
>
> diff --git a/sound/soc/samsung/s3c2412-i2s.c b/sound/soc/samsung/s3c2412-i2s.c
> index 841ab14..cecdbad 100644
> --- a/sound/soc/samsung/s3c2412-i2s.c
> +++ b/sound/soc/samsung/s3c2412-i2s.c
> @@ -69,7 +69,7 @@ static int s3c2412_i2s_probe(struct snd_soc_dai *dai)
> s3c2412_i2s.dma_playback = &s3c2412_i2s_pcm_stereo_out;
>
> s3c2412_i2s.iis_cclk = clk_get(dai->dev, "i2sclk");
> - if (s3c2412_i2s.iis_cclk == NULL) {
> + if (IS_ERR(s3c2412_i2s.iis_cclk)) {
> pr_err("failed to get i2sclk clock\n");
> iounmap(s3c2412_i2s.regs);
> return -ENODEV;
> diff --git a/sound/soc/samsung/s3c24xx-i2s.c b/sound/soc/samsung/s3c24xx-i2s.c
> index 63d8849..9f888bc 100644
> --- a/sound/soc/samsung/s3c24xx-i2s.c
> +++ b/sound/soc/samsung/s3c24xx-i2s.c
> @@ -383,7 +383,7 @@ static int s3c24xx_i2s_probe(struct snd_soc_dai *dai)
> return -ENXIO;
>
> s3c24xx_i2s.iis_clk = clk_get(dai->dev, "iis");
> - if (s3c24xx_i2s.iis_clk == NULL) {
> + if (IS_ERR(s3c24xx_i2s.iis_clk)) {
> pr_err("failed to get iis_clock\n");
> iounmap(s3c24xx_i2s.regs);
> return -ENODEV;
> diff --git a/sound/soc/samsung/s3c24xx_uda134x.c b/sound/soc/samsung/s3c24xx_uda134x.c
> index dc9d551..4da57cd 100644
> --- a/sound/soc/samsung/s3c24xx_uda134x.c
> +++ b/sound/soc/samsung/s3c24xx_uda134x.c
> @@ -66,13 +66,13 @@ static int s3c24xx_uda134x_startup(struct snd_pcm_substream *substream)
> pr_debug("%s %d\n", __func__, clk_users);
> if (clk_users == 0) {
> xtal = clk_get(&s3c24xx_uda134x_snd_device->dev, "xtal");
> - if (!xtal) {
> + if (IS_ERR(xtal)) {
> printk(KERN_ERR "%s cannot get xtal\n", __func__);
> ret = -EBUSY;
> } else {
> pclk = clk_get(&s3c24xx_uda134x_snd_device->dev,
> "pclk");
> - if (!pclk) {
> + if (IS_ERR(pclk)) {
> printk(KERN_ERR "%s cannot get pclk\n",
> __func__);
> clk_put(xtal);




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