* [PATCH] mmc: sdhci-s3c: Check if clk_set_rate() succeeds
@ 2013-08-29 16:15 Mark Brown
2013-08-30 8:21 ` Jaehoon Chung
0 siblings, 1 reply; 3+ messages in thread
From: Mark Brown @ 2013-08-29 16:15 UTC (permalink / raw)
To: Chris Ball; +Cc: linux-mmc, linux-samsung-soc, linaro-kernel, Mark Brown
From: Mark Brown <broonie@linaro.org>
It is possible that we may fail to set the clock rate, if we do so then
log the failure and don't bother reprogramming the IP.
Signed-off-by: Mark Brown <broonie@linaro.org>
---
drivers/mmc/host/sdhci-s3c.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 926aaf6..d10de3f 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -295,6 +295,7 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock)
struct device *dev = &ourhost->pdev->dev;
unsigned long timeout;
u16 clk = 0;
+ int ret;
/* don't bother if the clock is going off */
if (clock == 0)
@@ -302,7 +303,12 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock)
sdhci_s3c_set_clock(host, clock);
- clk_set_rate(ourhost->clk_bus[ourhost->cur_clk], clock);
+ ret = clk_set_rate(ourhost->clk_bus[ourhost->cur_clk], clock);
+ if (ret != 0) {
+ dev_err(dev, "%s: failed to set clock rate %uHz\n",
+ mmc_hostname(host->mmc), clock);
+ return;
+ }
host->clock = clock;
--
1.8.4.rc3
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] mmc: sdhci-s3c: Check if clk_set_rate() succeeds
2013-08-29 16:15 [PATCH] mmc: sdhci-s3c: Check if clk_set_rate() succeeds Mark Brown
@ 2013-08-30 8:21 ` Jaehoon Chung
0 siblings, 0 replies; 3+ messages in thread
From: Jaehoon Chung @ 2013-08-30 8:21 UTC (permalink / raw)
To: Mark Brown
Cc: Chris Ball, linux-mmc, linux-samsung-soc, linaro-kernel,
Mark Brown
Looks good to me.
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
On 08/30/2013 01:15 AM, Mark Brown wrote:
> From: Mark Brown <broonie@linaro.org>
>
> It is possible that we may fail to set the clock rate, if we do so then
> log the failure and don't bother reprogramming the IP.
>
> Signed-off-by: Mark Brown <broonie@linaro.org>
> ---
> drivers/mmc/host/sdhci-s3c.c | 8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
> index 926aaf6..d10de3f 100644
> --- a/drivers/mmc/host/sdhci-s3c.c
> +++ b/drivers/mmc/host/sdhci-s3c.c
> @@ -295,6 +295,7 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock)
> struct device *dev = &ourhost->pdev->dev;
> unsigned long timeout;
> u16 clk = 0;
> + int ret;
>
> /* don't bother if the clock is going off */
> if (clock == 0)
> @@ -302,7 +303,12 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock)
>
> sdhci_s3c_set_clock(host, clock);
>
> - clk_set_rate(ourhost->clk_bus[ourhost->cur_clk], clock);
> + ret = clk_set_rate(ourhost->clk_bus[ourhost->cur_clk], clock);
> + if (ret != 0) {
> + dev_err(dev, "%s: failed to set clock rate %uHz\n",
> + mmc_hostname(host->mmc), clock);
> + return;
> + }
>
> host->clock = clock;
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH] mmc: sdhci-s3c: Check if clk_set_rate() succeeds
@ 2013-12-12 11:21 Mark Brown
0 siblings, 0 replies; 3+ messages in thread
From: Mark Brown @ 2013-12-12 11:21 UTC (permalink / raw)
To: Chris Ball; +Cc: linux-mmc, linaro-kernel, linux-samsung-soc, Mark Brown
From: Mark Brown <broonie@linaro.org>
It is possible that we may fail to set the clock rate, if we do so then
log the failure and don't bother reprogramming the IP.
Signed-off-by: Mark Brown <broonie@linaro.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
---
drivers/mmc/host/sdhci-s3c.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 6debda952155..5c20f827d828 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -295,6 +295,7 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock)
struct device *dev = &ourhost->pdev->dev;
unsigned long timeout;
u16 clk = 0;
+ int ret;
/* If the clock is going off, set to 0 at clock control register */
if (clock == 0) {
@@ -305,7 +306,12 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock)
sdhci_s3c_set_clock(host, clock);
- clk_set_rate(ourhost->clk_bus[ourhost->cur_clk], clock);
+ ret = clk_set_rate(ourhost->clk_bus[ourhost->cur_clk], clock);
+ if (ret != 0) {
+ dev_err(dev, "%s: failed to set clock rate %uHz\n",
+ mmc_hostname(host->mmc), clock);
+ return;
+ }
host->clock = clock;
--
1.8.5.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
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