[PATCH 0/3] spi: omap2-mcspi: spi cleanups

[PATCH 0/3] spi: omap2-mcspi: spi cleanups

[Shubhrajyoti D]

This patch does the following

Calls the pm_runtime_* functions directly.
Remove the MOD_REG_BIT macro usage thereby removiing un-needed branch.
At remove dont use the autosuspend runtime calls.

Shubhrajyoti D (3):
  spi: omap2-mcspi: Call pm_runtime_* functions directly
  spi: omap2-mcspi: Remove the macro MOD_REG_BIT
  spi: omap2-mcspi: At remove dont use the runtime_autosuspend calls

 drivers/spi/spi-omap2-mcspi.c |   55 ++++++++++++++++++-----------------------
 1 files changed, 24 insertions(+), 31 deletions(-)

-- 
1.7.5.4

[PATCH 1/3] spi: omap2-mcspi: Call pm_runtime_* functions directly

[Shubhrajyoti D]

Call the pm_runtime functions directly making room for possible
pm optimisations. Also the runtime functions aren't just about
enabling and disabling of clocks though it does enable clocks also.

Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
---
 drivers/spi/spi-omap2-mcspi.c |   28 +++++++++++-----------------
 1 files changed, 11 insertions(+), 17 deletions(-)

diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
index 259f601..dd887eb 100644
--- a/drivers/spi/spi-omap2-mcspi.c
+++ b/drivers/spi/spi-omap2-mcspi.c
@@ -260,16 +260,6 @@ static void omap2_mcspi_restore_ctx(struct omap2_mcspi *mcspi)
 	list_for_each_entry(cs, &ctx->cs, node)
 		__raw_writel(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
 }
-static void omap2_mcspi_disable_clocks(struct omap2_mcspi *mcspi)
-{
-	pm_runtime_mark_last_busy(mcspi->dev);
-	pm_runtime_put_autosuspend(mcspi->dev);
-}
-
-static int omap2_mcspi_enable_clocks(struct omap2_mcspi *mcspi)
-{
-	return pm_runtime_get_sync(mcspi->dev);
-}
 
 static int omap2_prepare_transfer(struct spi_master *master)
 {
@@ -848,12 +838,13 @@ static int omap2_mcspi_setup(struct spi_device *spi)
 			return ret;
 	}
 
-	ret = omap2_mcspi_enable_clocks(mcspi);
+	ret = pm_runtime_get_sync(mcspi->dev);
 	if (ret < 0)
 		return ret;
 
 	ret = omap2_mcspi_setup_transfer(spi, NULL);
-	omap2_mcspi_disable_clocks(mcspi);
+	pm_runtime_mark_last_busy(mcspi->dev);
+	pm_runtime_put_autosuspend(mcspi->dev);
 
 	return ret;
 }
@@ -1067,7 +1058,7 @@ static int __devinit omap2_mcspi_master_setup(struct omap2_mcspi *mcspi)
 	struct omap2_mcspi_regs	*ctx = &mcspi->ctx;
 	int			ret = 0;
 
-	ret = omap2_mcspi_enable_clocks(mcspi);
+	ret = pm_runtime_get_sync(mcspi->dev);
 	if (ret < 0)
 		return ret;
 
@@ -1076,7 +1067,8 @@ static int __devinit omap2_mcspi_master_setup(struct omap2_mcspi *mcspi)
 	ctx->wakeupenable = OMAP2_MCSPI_WAKEUPENABLE_WKEN;
 
 	omap2_mcspi_set_master_mode(master);
-	omap2_mcspi_disable_clocks(mcspi);
+	pm_runtime_mark_last_busy(mcspi->dev);
+	pm_runtime_put_autosuspend(mcspi->dev);
 	return 0;
 }
 
@@ -1251,7 +1243,8 @@ static int __devexit omap2_mcspi_remove(struct platform_device *pdev)
 	mcspi = spi_master_get_devdata(master);
 	dma_channels = mcspi->dma_channels;
 
-	omap2_mcspi_disable_clocks(mcspi);
+	pm_runtime_mark_last_busy(mcspi->dev);
+	pm_runtime_put_autosuspend(mcspi->dev);
 	pm_runtime_disable(&pdev->dev);
 
 	spi_unregister_master(master);
@@ -1276,7 +1269,7 @@ static int omap2_mcspi_resume(struct device *dev)
 	struct omap2_mcspi_regs	*ctx = &mcspi->ctx;
 	struct omap2_mcspi_cs	*cs;
 
-	omap2_mcspi_enable_clocks(mcspi);
+	pm_runtime_get_sync(mcspi->dev);
 	list_for_each_entry(cs, &ctx->cs, node) {
 		if ((cs->chconf0 & OMAP2_MCSPI_CHCONF_FORCE) == 0) {
 			/*
@@ -1289,7 +1282,8 @@ static int omap2_mcspi_resume(struct device *dev)
 			__raw_writel(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
 		}
 	}
-	omap2_mcspi_disable_clocks(mcspi);
+	pm_runtime_mark_last_busy(mcspi->dev);
+	pm_runtime_put_autosuspend(mcspi->dev);
 	return 0;
 }
 #else
-- 
1.7.5.4

Re: [PATCH 1/3] spi: omap2-mcspi: Call pm_runtime_* functions directly

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 3739 bytes --]

On Tue, Aug 21, 2012 at 11:47:42AM +0530, Shubhrajyoti D wrote:
> Call the pm_runtime functions directly making room for possible
> pm optimisations. Also the runtime functions aren't just about
> enabling and disabling of clocks though it does enable clocks also.
> 
> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>

Acked-by: Felipe Balbi <balbi@ti.com>

> ---
>  drivers/spi/spi-omap2-mcspi.c |   28 +++++++++++-----------------
>  1 files changed, 11 insertions(+), 17 deletions(-)
> 
> diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
> index 259f601..dd887eb 100644
> --- a/drivers/spi/spi-omap2-mcspi.c
> +++ b/drivers/spi/spi-omap2-mcspi.c
> @@ -260,16 +260,6 @@ static void omap2_mcspi_restore_ctx(struct omap2_mcspi *mcspi)
>  	list_for_each_entry(cs, &ctx->cs, node)
>  		__raw_writel(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
>  }
> -static void omap2_mcspi_disable_clocks(struct omap2_mcspi *mcspi)
> -{
> -	pm_runtime_mark_last_busy(mcspi->dev);
> -	pm_runtime_put_autosuspend(mcspi->dev);
> -}
> -
> -static int omap2_mcspi_enable_clocks(struct omap2_mcspi *mcspi)
> -{
> -	return pm_runtime_get_sync(mcspi->dev);
> -}
>  
>  static int omap2_prepare_transfer(struct spi_master *master)
>  {
> @@ -848,12 +838,13 @@ static int omap2_mcspi_setup(struct spi_device *spi)
>  			return ret;
>  	}
>  
> -	ret = omap2_mcspi_enable_clocks(mcspi);
> +	ret = pm_runtime_get_sync(mcspi->dev);
>  	if (ret < 0)
>  		return ret;
>  
>  	ret = omap2_mcspi_setup_transfer(spi, NULL);
> -	omap2_mcspi_disable_clocks(mcspi);
> +	pm_runtime_mark_last_busy(mcspi->dev);
> +	pm_runtime_put_autosuspend(mcspi->dev);
>  
>  	return ret;
>  }
> @@ -1067,7 +1058,7 @@ static int __devinit omap2_mcspi_master_setup(struct omap2_mcspi *mcspi)
>  	struct omap2_mcspi_regs	*ctx = &mcspi->ctx;
>  	int			ret = 0;
>  
> -	ret = omap2_mcspi_enable_clocks(mcspi);
> +	ret = pm_runtime_get_sync(mcspi->dev);
>  	if (ret < 0)
>  		return ret;
>  
> @@ -1076,7 +1067,8 @@ static int __devinit omap2_mcspi_master_setup(struct omap2_mcspi *mcspi)
>  	ctx->wakeupenable = OMAP2_MCSPI_WAKEUPENABLE_WKEN;
>  
>  	omap2_mcspi_set_master_mode(master);
> -	omap2_mcspi_disable_clocks(mcspi);
> +	pm_runtime_mark_last_busy(mcspi->dev);
> +	pm_runtime_put_autosuspend(mcspi->dev);
>  	return 0;
>  }
>  
> @@ -1251,7 +1243,8 @@ static int __devexit omap2_mcspi_remove(struct platform_device *pdev)
>  	mcspi = spi_master_get_devdata(master);
>  	dma_channels = mcspi->dma_channels;
>  
> -	omap2_mcspi_disable_clocks(mcspi);
> +	pm_runtime_mark_last_busy(mcspi->dev);
> +	pm_runtime_put_autosuspend(mcspi->dev);
>  	pm_runtime_disable(&pdev->dev);
>  
>  	spi_unregister_master(master);
> @@ -1276,7 +1269,7 @@ static int omap2_mcspi_resume(struct device *dev)
>  	struct omap2_mcspi_regs	*ctx = &mcspi->ctx;
>  	struct omap2_mcspi_cs	*cs;
>  
> -	omap2_mcspi_enable_clocks(mcspi);
> +	pm_runtime_get_sync(mcspi->dev);
>  	list_for_each_entry(cs, &ctx->cs, node) {
>  		if ((cs->chconf0 & OMAP2_MCSPI_CHCONF_FORCE) == 0) {
>  			/*
> @@ -1289,7 +1282,8 @@ static int omap2_mcspi_resume(struct device *dev)
>  			__raw_writel(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
>  		}
>  	}
> -	omap2_mcspi_disable_clocks(mcspi);
> +	pm_runtime_mark_last_busy(mcspi->dev);
> +	pm_runtime_put_autosuspend(mcspi->dev);
>  	return 0;
>  }
>  #else
> -- 
> 1.7.5.4
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/

-- 
balbi

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[PATCH 2/3] spi: omap2-mcspi: Remove the macro MOD_REG_BIT

[Shubhrajyoti D]

Remove the macro MOD_REG_BIT instead make the bit field modifications
directly. This deletes a branch operation in cases where the the set
is predecided.While at it optimise two sequential bit clear in one step.

Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
---
 drivers/spi/spi-omap2-mcspi.c |   28 ++++++++++++++--------------
 1 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
index dd887eb..5642111 100644
--- a/drivers/spi/spi-omap2-mcspi.c
+++ b/drivers/spi/spi-omap2-mcspi.c
@@ -140,13 +140,6 @@ struct omap2_mcspi_cs {
 	u32			chconf0;
 };
 
-#define MOD_REG_BIT(val, mask, set) do { \
-	if (set) \
-		val |= mask; \
-	else \
-		val &= ~mask; \
-} while (0)
-
 static inline void mcspi_write_reg(struct spi_master *master,
 		int idx, u32 val)
 {
@@ -205,7 +198,11 @@ static void omap2_mcspi_set_dma_req(const struct spi_device *spi,
 	else
 		rw = OMAP2_MCSPI_CHCONF_DMAW;
 
-	MOD_REG_BIT(l, rw, enable);
+	if (enable)
+		l |= rw;
+	else
+		l &= ~rw;
+
 	mcspi_write_chconf0(spi, l);
 }
 
@@ -224,7 +221,11 @@ static void omap2_mcspi_force_cs(struct spi_device *spi, int cs_active)
 	u32 l;
 
 	l = mcspi_cached_chconf0(spi);
-	MOD_REG_BIT(l, OMAP2_MCSPI_CHCONF_FORCE, cs_active);
+	if (cs_active)
+		l |= OMAP2_MCSPI_CHCONF_FORCE;
+	else
+		l &= ~OMAP2_MCSPI_CHCONF_FORCE;
+
 	mcspi_write_chconf0(spi, l);
 }
 
@@ -239,9 +240,8 @@ static void omap2_mcspi_set_master_mode(struct spi_master *master)
 	 * to single-channel master mode
 	 */
 	l = mcspi_read_reg(master, OMAP2_MCSPI_MODULCTRL);
-	MOD_REG_BIT(l, OMAP2_MCSPI_MODULCTRL_STEST, 0);
-	MOD_REG_BIT(l, OMAP2_MCSPI_MODULCTRL_MS, 0);
-	MOD_REG_BIT(l, OMAP2_MCSPI_MODULCTRL_SINGLE, 1);
+	l &= ~(OMAP2_MCSPI_MODULCTRL_STEST | OMAP2_MCSPI_MODULCTRL_MS);
+	l |= OMAP2_MCSPI_MODULCTRL_SINGLE;
 	mcspi_write_reg(master, OMAP2_MCSPI_MODULCTRL, l);
 
 	ctx->modulctrl = l;
@@ -1276,9 +1276,9 @@ static int omap2_mcspi_resume(struct device *dev)
 			 * We need to toggle CS state for OMAP take this
 			 * change in account.
 			 */
-			MOD_REG_BIT(cs->chconf0, OMAP2_MCSPI_CHCONF_FORCE, 1);
+			cs->chconf0 |= OMAP2_MCSPI_CHCONF_FORCE;
 			__raw_writel(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
-			MOD_REG_BIT(cs->chconf0, OMAP2_MCSPI_CHCONF_FORCE, 0);
+			cs->chconf0 &= ~OMAP2_MCSPI_CHCONF_FORCE;
 			__raw_writel(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
 		}
 	}
-- 
1.7.5.4

Re: [PATCH 2/3] spi: omap2-mcspi: Remove the macro MOD_REG_BIT

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 3135 bytes --]

On Tue, Aug 21, 2012 at 11:47:43AM +0530, Shubhrajyoti D wrote:
> Remove the macro MOD_REG_BIT instead make the bit field modifications
> directly. This deletes a branch operation in cases where the the set
> is predecided.While at it optimise two sequential bit clear in one step.
               ^^
	       you need a space here, besides you can add the ack below

> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>

Acked-by: Felipe Balbi <balbi@ti.com>

> ---
>  drivers/spi/spi-omap2-mcspi.c |   28 ++++++++++++++--------------
>  1 files changed, 14 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
> index dd887eb..5642111 100644
> --- a/drivers/spi/spi-omap2-mcspi.c
> +++ b/drivers/spi/spi-omap2-mcspi.c
> @@ -140,13 +140,6 @@ struct omap2_mcspi_cs {
>  	u32			chconf0;
>  };
>  
> -#define MOD_REG_BIT(val, mask, set) do { \
> -	if (set) \
> -		val |= mask; \
> -	else \
> -		val &= ~mask; \
> -} while (0)
> -
>  static inline void mcspi_write_reg(struct spi_master *master,
>  		int idx, u32 val)
>  {
> @@ -205,7 +198,11 @@ static void omap2_mcspi_set_dma_req(const struct spi_device *spi,
>  	else
>  		rw = OMAP2_MCSPI_CHCONF_DMAW;
>  
> -	MOD_REG_BIT(l, rw, enable);
> +	if (enable)
> +		l |= rw;
> +	else
> +		l &= ~rw;
> +
>  	mcspi_write_chconf0(spi, l);
>  }
>  
> @@ -224,7 +221,11 @@ static void omap2_mcspi_force_cs(struct spi_device *spi, int cs_active)
>  	u32 l;
>  
>  	l = mcspi_cached_chconf0(spi);
> -	MOD_REG_BIT(l, OMAP2_MCSPI_CHCONF_FORCE, cs_active);
> +	if (cs_active)
> +		l |= OMAP2_MCSPI_CHCONF_FORCE;
> +	else
> +		l &= ~OMAP2_MCSPI_CHCONF_FORCE;
> +
>  	mcspi_write_chconf0(spi, l);
>  }
>  
> @@ -239,9 +240,8 @@ static void omap2_mcspi_set_master_mode(struct spi_master *master)
>  	 * to single-channel master mode
>  	 */
>  	l = mcspi_read_reg(master, OMAP2_MCSPI_MODULCTRL);
> -	MOD_REG_BIT(l, OMAP2_MCSPI_MODULCTRL_STEST, 0);
> -	MOD_REG_BIT(l, OMAP2_MCSPI_MODULCTRL_MS, 0);
> -	MOD_REG_BIT(l, OMAP2_MCSPI_MODULCTRL_SINGLE, 1);
> +	l &= ~(OMAP2_MCSPI_MODULCTRL_STEST | OMAP2_MCSPI_MODULCTRL_MS);
> +	l |= OMAP2_MCSPI_MODULCTRL_SINGLE;
>  	mcspi_write_reg(master, OMAP2_MCSPI_MODULCTRL, l);
>  
>  	ctx->modulctrl = l;
> @@ -1276,9 +1276,9 @@ static int omap2_mcspi_resume(struct device *dev)
>  			 * We need to toggle CS state for OMAP take this
>  			 * change in account.
>  			 */
> -			MOD_REG_BIT(cs->chconf0, OMAP2_MCSPI_CHCONF_FORCE, 1);
> +			cs->chconf0 |= OMAP2_MCSPI_CHCONF_FORCE;
>  			__raw_writel(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
> -			MOD_REG_BIT(cs->chconf0, OMAP2_MCSPI_CHCONF_FORCE, 0);
> +			cs->chconf0 &= ~OMAP2_MCSPI_CHCONF_FORCE;
>  			__raw_writel(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
>  		}
>  	}
> -- 
> 1.7.5.4
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/

-- 
balbi

[-- Attachment #2: Digital signature --]
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Re: [PATCH 2/3] spi: omap2-mcspi: Remove the macro MOD_REG_BIT

[Shubhrajyoti]

Hi Felipe,
Thanks for the review

On Tuesday 21 August 2012 02:35 PM, Felipe Balbi wrote:
> On Tue, Aug 21, 2012 at 11:47:43AM +0530, Shubhrajyoti D wrote:
>> Remove the macro MOD_REG_BIT instead make the bit field modifications
>> directly. This deletes a branch operation in cases where the the set
>> is predecided.While at it optimise two sequential bit clear in one step.
>                ^^
> 	       you need a space here, besides you can add the ack below
Will fix that and resend.
>> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
> Acked-by: Felipe Balbi <balbi@ti.com>
>
>> ---
>>  drivers/spi/spi-omap2-mcspi.c |   28 ++++++++++++++--------------
>>  1 files changed, 14 insertions(+), 14 deletions(-)
>>
>> diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
>> index dd887eb..5642111 100644
>> --- a/drivers/spi/spi-omap2-mcspi.c
>> +++ b/drivers/spi/spi-omap2-mcspi.c
>> @@ -140,13 +140,6 @@ struct omap2_mcspi_cs {
>>  	u32			chconf0;
>>  };
>>  
>> -#define MOD_REG_BIT(val, mask, set) do { \
>> -	if (set) \
>> -		val |= mask; \
>> -	else \
>> -		val &= ~mask; \
>> -} while (0)
>> -
>>  static inline void mcspi_write_reg(struct spi_master *master,
>>  		int idx, u32 val)
>>  {
>> @@ -205,7 +198,11 @@ static void omap2_mcspi_set_dma_req(const struct spi_device *spi,
>>  	else
>>  		rw = OMAP2_MCSPI_CHCONF_DMAW;
>>  
>> -	MOD_REG_BIT(l, rw, enable);
>> +	if (enable)
>> +		l |= rw;
>> +	else
>> +		l &= ~rw;
>> +
>>  	mcspi_write_chconf0(spi, l);
>>  }
>>  
>> @@ -224,7 +221,11 @@ static void omap2_mcspi_force_cs(struct spi_device *spi, int cs_active)
>>  	u32 l;
>>  
>>  	l = mcspi_cached_chconf0(spi);
>> -	MOD_REG_BIT(l, OMAP2_MCSPI_CHCONF_FORCE, cs_active);
>> +	if (cs_active)
>> +		l |= OMAP2_MCSPI_CHCONF_FORCE;
>> +	else
>> +		l &= ~OMAP2_MCSPI_CHCONF_FORCE;
>> +
>>  	mcspi_write_chconf0(spi, l);
>>  }
>>  
>> @@ -239,9 +240,8 @@ static void omap2_mcspi_set_master_mode(struct spi_master *master)
>>  	 * to single-channel master mode
>>  	 */
>>  	l = mcspi_read_reg(master, OMAP2_MCSPI_MODULCTRL);
>> -	MOD_REG_BIT(l, OMAP2_MCSPI_MODULCTRL_STEST, 0);
>> -	MOD_REG_BIT(l, OMAP2_MCSPI_MODULCTRL_MS, 0);
>> -	MOD_REG_BIT(l, OMAP2_MCSPI_MODULCTRL_SINGLE, 1);
>> +	l &= ~(OMAP2_MCSPI_MODULCTRL_STEST | OMAP2_MCSPI_MODULCTRL_MS);
>> +	l |= OMAP2_MCSPI_MODULCTRL_SINGLE;
>>  	mcspi_write_reg(master, OMAP2_MCSPI_MODULCTRL, l);
>>  
>>  	ctx->modulctrl = l;
>> @@ -1276,9 +1276,9 @@ static int omap2_mcspi_resume(struct device *dev)
>>  			 * We need to toggle CS state for OMAP take this
>>  			 * change in account.
>>  			 */
>> -			MOD_REG_BIT(cs->chconf0, OMAP2_MCSPI_CHCONF_FORCE, 1);
>> +			cs->chconf0 |= OMAP2_MCSPI_CHCONF_FORCE;
>>  			__raw_writel(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
>> -			MOD_REG_BIT(cs->chconf0, OMAP2_MCSPI_CHCONF_FORCE, 0);
>> +			cs->chconf0 &= ~OMAP2_MCSPI_CHCONF_FORCE;
>>  			__raw_writel(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
>>  		}
>>  	}
>> -- 
>> 1.7.5.4
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>> Please read the FAQ at  http://www.tux.org/lkml/

[PATCH 3/3] spi: omap2-mcspi: At remove dont use the runtime_autosuspend calls

[Shubhrajyoti D]

At remove we shouldnt be using the autosuspend timeout as we are
calling pm_runtime_disable immediately after.

Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
---
 drivers/spi/spi-omap2-mcspi.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
index 5642111..f5bf628 100644
--- a/drivers/spi/spi-omap2-mcspi.c
+++ b/drivers/spi/spi-omap2-mcspi.c
@@ -1243,8 +1243,7 @@ static int __devexit omap2_mcspi_remove(struct platform_device *pdev)
 	mcspi = spi_master_get_devdata(master);
 	dma_channels = mcspi->dma_channels;
 
-	pm_runtime_mark_last_busy(mcspi->dev);
-	pm_runtime_put_autosuspend(mcspi->dev);
+	pm_runtime_put_sync(mcspi->dev);
 	pm_runtime_disable(&pdev->dev);
 
 	spi_unregister_master(master);
-- 
1.7.5.4

Re: [PATCH 3/3] spi: omap2-mcspi: At remove dont use the runtime_autosuspend calls

[Felipe Balbi]

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On Tue, Aug 21, 2012 at 11:47:44AM +0530, Shubhrajyoti D wrote:
> At remove we shouldnt be using the autosuspend timeout as we are
> calling pm_runtime_disable immediately after.
> 
> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>

Makes sense to me:

Acked-by: Felipe Balbi <balbi@ti.com>

> ---
>  drivers/spi/spi-omap2-mcspi.c |    3 +--
>  1 files changed, 1 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
> index 5642111..f5bf628 100644
> --- a/drivers/spi/spi-omap2-mcspi.c
> +++ b/drivers/spi/spi-omap2-mcspi.c
> @@ -1243,8 +1243,7 @@ static int __devexit omap2_mcspi_remove(struct platform_device *pdev)
>  	mcspi = spi_master_get_devdata(master);
>  	dma_channels = mcspi->dma_channels;
>  
> -	pm_runtime_mark_last_busy(mcspi->dev);
> -	pm_runtime_put_autosuspend(mcspi->dev);
> +	pm_runtime_put_sync(mcspi->dev);
>  	pm_runtime_disable(&pdev->dev);
>  
>  	spi_unregister_master(master);
> -- 
> 1.7.5.4
> 
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-- 
balbi

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