[U-Boot] [PATCH 1/3] ot1200: Fix error handling in board_mmc_init()

[U-Boot] [PATCH 1/3] ot1200: Fix error handling in board_mmc_init()

[Fabio Estevam]

From: Fabio Estevam <fabio.estevam@freescale.com>

When an invalid USDHC port is passed we should return -EINVAL instead of 0.
    
Also, return the error immediately on fsl_esdhc_initialize() failure.

Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
 board/bachmann/ot1200/ot1200.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/board/bachmann/ot1200/ot1200.c b/board/bachmann/ot1200/ot1200.c
index 007c1ef..93f3d65 100644
--- a/board/bachmann/ot1200/ot1200.c
+++ b/board/bachmann/ot1200/ot1200.c
@@ -173,7 +173,7 @@ struct fsl_esdhc_cfg usdhc_cfg[2] = {
 
 int board_mmc_init(bd_t *bis)
 {
-	s32 status = 0;
+	int ret;
 	u32 index = 0;
 
 	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
@@ -196,13 +196,15 @@ int board_mmc_init(bd_t *bis)
 			printf("Warning: you configured more USDHC controllers"
 				"(%d) then supported by the board (%d)\n",
 				index + 1, CONFIG_SYS_FSL_USDHC_NUM);
-			return status;
+			return -EINVAL;
 		}
 
-		status |= fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
+		ret = fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
+		if (ret)
+			return ret;
 	}
 
-	return status;
+	return 0;
 }
 
 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
-- 
1.9.1

[U-Boot] [PATCH 2/3] nitrogen6x: Fix error handling in board_mmc_init()

[Fabio Estevam]

From: Fabio Estevam <fabio.estevam@freescale.com>

When an invalid USDHC port is passed we should return -EINVAL instead of 0.
    
Also, return the error immediately on fsl_esdhc_initialize() failure.

Cc: Eric Nelson <eric.nelson@boundarydevices.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
 board/boundary/nitrogen6x/nitrogen6x.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/board/boundary/nitrogen6x/nitrogen6x.c b/board/boundary/nitrogen6x/nitrogen6x.c
index fcd4d82..e8ea256 100644
--- a/board/boundary/nitrogen6x/nitrogen6x.c
+++ b/board/boundary/nitrogen6x/nitrogen6x.c
@@ -302,7 +302,7 @@ int board_mmc_getcd(struct mmc *mmc)
 
 int board_mmc_init(bd_t *bis)
 {
-	s32 status = 0;
+	int ret;
 	u32 index = 0;
 
 	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
@@ -325,13 +325,15 @@ int board_mmc_init(bd_t *bis)
 		       printf("Warning: you configured more USDHC controllers"
 			       "(%d) then supported by the board (%d)\n",
 			       index + 1, CONFIG_SYS_FSL_USDHC_NUM);
-		       return status;
+		       return -EINVAL;
 		}
 
-		status |= fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
+		ret = fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
+		if (ret)
+			return ret;
 	}
 
-	return status;
+	return 0;
 }
 #endif
 
-- 
1.9.1

[U-Boot] [PATCH 3/3] mx6boards: Fix error handling in board_mmc_init()

[Fabio Estevam]

From: Fabio Estevam <fabio.estevam@freescale.com>

When an invalid USDHC port is passed we should return -EINVAL instead of 0.
    
Also, return the error immediately on fsl_esdhc_initialize() failure.

Cc: Eric Benard <eric@eukrea.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
 board/embest/mx6boards/mx6boards.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/board/embest/mx6boards/mx6boards.c b/board/embest/mx6boards/mx6boards.c
index 02fb3fa..f8c7468 100644
--- a/board/embest/mx6boards/mx6boards.c
+++ b/board/embest/mx6boards/mx6boards.c
@@ -216,7 +216,7 @@ int board_mmc_getcd(struct mmc *mmc)
 
 int board_mmc_init(bd_t *bis)
 {
-	s32 status = 0;
+	int ret;
 	int i;
 
 	/*
@@ -268,13 +268,15 @@ int board_mmc_init(bd_t *bis)
 			printf("Warning: you configured more USDHC controllers"
 			       "(%d) then supported by the board (%d)\n",
 			       i + 1, CONFIG_SYS_FSL_USDHC_NUM);
-			return status;
+			return -EINVAL;
 		}
 
-		status |= fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
+		ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
+		if (ret)
+			return ret;
 	}
 
-	return status;
+	return 0;
 }
 #endif
 
-- 
1.9.1

[U-Boot] [PATCH 1/3] ot1200: Fix error handling in board_mmc_init()

[Stefano Babic]

On 21/11/2014 19:42, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@freescale.com>
> 
> When an invalid USDHC port is passed we should return -EINVAL instead of 0.
>     
> Also, return the error immediately on fsl_esdhc_initialize() failure.
> 
> Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
> ---


Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic



-- 
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================

[U-Boot] [PATCH 2/3] nitrogen6x: Fix error handling in board_mmc_init()

[Stefano Babic]

On 21/11/2014 19:42, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@freescale.com>
> 
> When an invalid USDHC port is passed we should return -EINVAL instead of 0.
>     
> Also, return the error immediately on fsl_esdhc_initialize() failure.
> 
> Cc: Eric Nelson <eric.nelson@boundarydevices.com>
> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
> ---

Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic



=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================

[U-Boot] [PATCH 3/3] mx6boards: Fix error handling in board_mmc_init()

[Stefano Babic]

On 21/11/2014 19:42, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@freescale.com>
> 
> When an invalid USDHC port is passed we should return -EINVAL instead of 0.
>     
> Also, return the error immediately on fsl_esdhc_initialize() failure.
> 
> Cc: Eric Benard <eric@eukrea.com>
> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
> ---


Applied to u-boot-imx, thanks !

Best regards,
Stefano Babic



-- 
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================

[U-Boot] [PATCH 1/3] ot1200: Fix error handling in board_mmc_init()

[Christian Gmeiner]

2014-11-24 12:05 GMT+01:00 Stefano Babic <sbabic@denx.de>:
> On 21/11/2014 19:42, Fabio Estevam wrote:
>> From: Fabio Estevam <fabio.estevam@freescale.com>
>>
>> When an invalid USDHC port is passed we should return -EINVAL instead of 0.
>>
>> Also, return the error immediately on fsl_esdhc_initialize() failure.
>>
>> Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
>> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
>> ---
>
>
> Applied to u-boot-imx, thanks !
>

Thanks Fabio for the patch!

greets
--
Christian Gmeiner, MSc

https://soundcloud.com/christian-gmeiner

[U-Boot] [PATCH 3/3] mx6boards: Fix error handling in board_mmc_init()

[Nikolay Dimitrov]

Hi Fabio,

On 11/21/2014 08:42 PM, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@freescale.com>
>
> When an invalid USDHC port is passed we should return -EINVAL instead of 0.
>
> Also, return the error immediately on fsl_esdhc_initialize() failure.
>
> Cc: Eric Benard <eric@eukrea.com>
> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
> ---
>   board/embest/mx6boards/mx6boards.c | 10 ++++++----
>   1 file changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/board/embest/mx6boards/mx6boards.c b/board/embest/mx6boards/mx6boards.c
> index 02fb3fa..f8c7468 100644
> --- a/board/embest/mx6boards/mx6boards.c
> +++ b/board/embest/mx6boards/mx6boards.c
> @@ -216,7 +216,7 @@ int board_mmc_getcd(struct mmc *mmc)
>
>   int board_mmc_init(bd_t *bis)
>   {
> -	s32 status = 0;
> +	int ret;
>   	int i;
>
>   	/*
> @@ -268,13 +268,15 @@ int board_mmc_init(bd_t *bis)
>   			printf("Warning: you configured more USDHC controllers"
>   			       "(%d) then supported by the board (%d)\n",
>   			       i + 1, CONFIG_SYS_FSL_USDHC_NUM);
> -			return status;
> +			return -EINVAL;
>   		}
>
> -		status |= fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
> +		ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
> +		if (ret)
> +			return ret;
>   	}
>
> -	return status;
> +	return 0;
>   }
>   #endif

Excuse me for the (very) late question, but just stumbled upon this
patch.

Isn't it possible to continue the initialization of the next ESDHC
module when the current one fails?

Even if there's a case of common initialization failure across all
ESDHC interfaces, isn't it better to continue the initialization and
preserve the interface abstraction, as if we don't know the
implementation details, e.g. pretend we don't know there's a common
failure mechanism across all ESDHCs and still try to init them 1 by 1.

Please don't consider this as NACK, I'm just sharing my thoughts.

Kind regards,
Nikolay

[U-Boot] [PATCH 3/3] mx6boards: Fix error handling in board_mmc_init()

[Fabio Estevam]

On Mon, Dec 22, 2014 at 2:32 PM, Nikolay Dimitrov <picmaster@mail.bg> wrote:

> Excuse me for the (very) late question, but just stumbled upon this
> patch.
>
> Isn't it possible to continue the initialization of the next ESDHC
> module when the current one fails?

If the initialization of any esdhc port failed, it means that
something very bad happened, so better to return the error
immediately.

Regards,

Fabio Estevam