[PATCH 1/4] drivers/mmc/host/dw_mmc.c: fix error return code

[PATCH 1/4] drivers/mmc/host/dw_mmc.c: fix error return code

[Peter Senna Tschudin]

From: Peter Senna Tschudin <peter.senna@gmail.com>

Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
---
 drivers/mmc/host/dw_mmc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 36f98c0..7ad5176 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2039,8 +2039,10 @@ int dw_mci_probe(struct dw_mci *host)
 	tasklet_init(&host->tasklet, dw_mci_tasklet_func, (unsigned long)host);
 	host->card_workqueue = alloc_workqueue("dw-mci-card",
 			WQ_MEM_RECLAIM | WQ_NON_REENTRANT, 1);
-	if (!host->card_workqueue)
+	if (!host->card_workqueue) {
+		err = -ENOMEM;
 		goto err_dmaunmap;
+	}
 	INIT_WORK(&host->card_work, dw_mci_work_routine_card);
 	ret = request_irq(host->irq, dw_mci_interrupt, host->irq_flags, "dw-mci", host);
 	if (ret)
-- 
1.7.11.4

[PATCH 2/4] drivers/mmc/host/omap.c: fix error return code

[Peter Senna Tschudin]

From: Peter Senna Tschudin <peter.senna@gmail.com>

Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
---
 drivers/mmc/host/omap.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 48ad361..d468f51 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -1369,8 +1369,10 @@ static int __devinit mmc_omap_probe(struct platform_device *pdev)
 	host->irq = irq;
 	host->phys_base = host->mem_res->start;
 	host->virt_base = ioremap(res->start, resource_size(res));
-	if (!host->virt_base)
+	if (!host->virt_base) {
+		ret = -ENOMEM;
 		goto err_ioremap;
+	}
 
 	host->iclk = clk_get(&pdev->dev, "ick");
 	if (IS_ERR(host->iclk)) {
@@ -1438,8 +1440,10 @@ static int __devinit mmc_omap_probe(struct platform_device *pdev)
 	host->reg_shift = (cpu_is_omap7xx() ? 1 : 2);
 
 	host->mmc_omap_wq = alloc_workqueue("mmc_omap", 0, 0);
-	if (!host->mmc_omap_wq)
+	if (!host->mmc_omap_wq) {
+		err = -ENOMEM;
 		goto err_plat_cleanup;
+	}
 
 	for (i = 0; i < pdata->nr_slots; i++) {
 		ret = mmc_omap_new_slot(host, i);
-- 
1.7.11.4

[PATCH 3/4] drivers/mmc/host/omap_hsmmc.c: fix error return code

[Peter Senna Tschudin]

From: Peter Senna Tschudin <peter.senna@gmail.com>

Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
---
 drivers/mmc/host/omap_hsmmc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index e59ac62..c8a2b36 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1893,6 +1893,7 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
 		if (pdata->init(&pdev->dev) != 0) {
 			dev_dbg(mmc_dev(host->mmc),
 				"Unable to configure MMC IRQs\n");
+			ret = -ENXIO;
 			goto err_irq_cd_init;
 		}
 	}
-- 
1.7.11.4

Re: [PATCH 3/4] drivers/mmc/host/omap_hsmmc.c: fix error return code

[S, Venkatraman]

On Mon, Sep 17, 2012 at 1:45 PM, Peter Senna Tschudin
<peter.senna@gmail.com> wrote:
> From: Peter Senna Tschudin <peter.senna@gmail.com>
>
> Convert a nonnegative error return code to a negative one, as returned
> elsewhere in the function.
>
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
>
> // <smpl>
> (
> if@p1 (\(ret < 0\|ret != 0\))
>  { ... return ret; }
> |
> ret@p1 = 0
> )
> ... when != ret = e1
>     when != &ret
> *if(...)
> {
>   ... when != ret = e2
>       when forall
>  return ret;
> }
> // </smpl>
>
> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>

Looks good.
Acked-by: Venkatraman S <svenkatr@ti.com>

[PATCH 4/4] drivers/mmc/host/mxs-mmc.c: fix error return code

[Peter Senna Tschudin]

From: Peter Senna Tschudin <peter.senna@gmail.com>

Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
---
 drivers/mmc/host/mxs-mmc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index 80d1e6d..afd8fdd 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -674,6 +674,7 @@ static int mxs_mmc_probe(struct platform_device *pdev)
 	if (!ssp->dmach) {
 		dev_err(mmc_dev(host->mmc),
 			"%s: failed to request dma\n", __func__);
+		ret = -ENODEV;
 		goto out_clk_put;
 	}
 
-- 
1.7.11.4

Re: [PATCH 4/4] drivers/mmc/host/mxs-mmc.c: fix error return code

[Marek Vasut]

Dear Peter Senna Tschudin,

> From: Peter Senna Tschudin <peter.senna@gmail.com>

The patch description is a bit crap, but otherwise

Acked-by: Marek Vasut <marex@denx.de>

> Convert a nonnegative error return code to a negative one, as returned
> elsewhere in the function.
> 
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> (
> if@p1 (\(ret < 0\|ret != 0\))
>  { ... return ret; }
> 
> ret@p1 = 0
> )
> ... when != ret = e1
>     when != &ret
> *if(...)
> {
>   ... when != ret = e2
>       when forall
>  return ret;
> }
> // </smpl>
> 
> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
> ---
>  drivers/mmc/host/mxs-mmc.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
> index 80d1e6d..afd8fdd 100644
> --- a/drivers/mmc/host/mxs-mmc.c
> +++ b/drivers/mmc/host/mxs-mmc.c
> @@ -674,6 +674,7 @@ static int mxs_mmc_probe(struct platform_device *pdev)
>  	if (!ssp->dmach) {
>  		dev_err(mmc_dev(host->mmc),
>  			"%s: failed to request dma\n", __func__);
> +		ret = -ENODEV;
>  		goto out_clk_put;
>  	}

Best regards,
Marek Vasut

Re: [PATCH 4/4] drivers/mmc/host/mxs-mmc.c: fix error return code

[Shawn Guo]

On Mon, Sep 17, 2012 at 10:15:28AM +0200, Peter Senna Tschudin wrote:
> From: Peter Senna Tschudin <peter.senna@gmail.com>
> 
> Convert a nonnegative error return code to a negative one, as returned
> elsewhere in the function.
> 
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> (
> if@p1 (\(ret < 0\|ret != 0\))
>  { ... return ret; }
> |
> ret@p1 = 0
> )
> ... when != ret = e1
>     when != &ret
> *if(...)
> {
>   ... when != ret = e2
>       when forall
>  return ret;
> }
> // </smpl>
> 
> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>

Acked-by: Shawn Guo <shawn.guo@linaro.org>

> ---
>  drivers/mmc/host/mxs-mmc.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
> index 80d1e6d..afd8fdd 100644
> --- a/drivers/mmc/host/mxs-mmc.c
> +++ b/drivers/mmc/host/mxs-mmc.c
> @@ -674,6 +674,7 @@ static int mxs_mmc_probe(struct platform_device *pdev)
>  	if (!ssp->dmach) {
>  		dev_err(mmc_dev(host->mmc),
>  			"%s: failed to request dma\n", __func__);
> +		ret = -ENODEV;
>  		goto out_clk_put;
>  	}
>  
> -- 
> 1.7.11.4
> 

Re: [PATCH 1/4] drivers/mmc/host/dw_mmc.c: fix error return code

[Will Newton]

On Mon, Sep 17, 2012 at 9:15 AM, Peter Senna Tschudin
<peter.senna@gmail.com> wrote:
> From: Peter Senna Tschudin <peter.senna@gmail.com>
>
> Convert a nonnegative error return code to a negative one, as returned
> elsewhere in the function.
>
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
>
> // <smpl>
> (
> if@p1 (\(ret < 0\|ret != 0\))
>  { ... return ret; }
> |
> ret@p1 = 0
> )
> ... when != ret = e1
>     when != &ret
> *if(...)
> {
>   ... when != ret = e2
>       when forall
>  return ret;
> }
> // </smpl>
>
> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>

Acked-by: Will Newton <will.newton@imgtec.com>

RE: [PATCH 1/4] drivers/mmc/host/dw_mmc.c: fix error return code

[Seungwon Jeon]

On Monday, September 17, 2012, Peter Senna Tschudin <peter.senna@gmail.com> wrote:
> From: Peter Senna Tschudin <peter.senna@gmail.com>
> 
> Convert a nonnegative error return code to a negative one, as returned
> elsewhere in the function.
> 
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> (
> if@p1 (\(ret < 0\|ret != 0\))
>  { ... return ret; }
> |
> ret@p1 = 0
> )
> ... when != ret = e1
>     when != &ret
> *if(...)
> {
>   ... when != ret = e2
>       when forall
>  return ret;
> }
> // </smpl>
> 
> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
> ---
>  drivers/mmc/host/dw_mmc.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
> index 36f98c0..7ad5176 100644
> --- a/drivers/mmc/host/dw_mmc.c
> +++ b/drivers/mmc/host/dw_mmc.c
> @@ -2039,8 +2039,10 @@ int dw_mci_probe(struct dw_mci *host)
>  	tasklet_init(&host->tasklet, dw_mci_tasklet_func, (unsigned long)host);
>  	host->card_workqueue = alloc_workqueue("dw-mci-card",
>  			WQ_MEM_RECLAIM | WQ_NON_REENTRANT, 1);
> -	if (!host->card_workqueue)
> +	if (!host->card_workqueue) {
> +		err = -ENOMEM;
ret is expected instead of err.
err isn't defined.

Thanks,
Seungwon Jeon

>  		goto err_dmaunmap;
> +	}
>  	INIT_WORK(&host->card_work, dw_mci_work_routine_card);
>  	ret = request_irq(host->irq, dw_mci_interrupt, host->irq_flags, "dw-mci", host);
>  	if (ret)
> --
> 1.7.11.4

Re: [PATCH 1/4] drivers/mmc/host/dw_mmc.c: fix error return code

[Peter Senna Tschudin]

On Mon, Sep 17, 2012 at 11:54 AM, Seungwon Jeon <tgih.jun@samsung.com> wrote:
> On Monday, September 17, 2012, Peter Senna Tschudin <peter.senna@gmail.com> wrote:
>> From: Peter Senna Tschudin <peter.senna@gmail.com>
>>
>> Convert a nonnegative error return code to a negative one, as returned
>> elsewhere in the function.
>>
>> A simplified version of the semantic match that finds this problem is as
>> follows: (http://coccinelle.lip6.fr/)
>>
>> // <smpl>
>> (
>> if@p1 (\(ret < 0\|ret != 0\))
>>  { ... return ret; }
>> |
>> ret@p1 = 0
>> )
>> ... when != ret = e1
>>     when != &ret
>> *if(...)
>> {
>>   ... when != ret = e2
>>       when forall
>>  return ret;
>> }
>> // </smpl>
>>
>> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
>> ---
>>  drivers/mmc/host/dw_mmc.c | 4 +++-
>>  1 file changed, 3 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
>> index 36f98c0..7ad5176 100644
>> --- a/drivers/mmc/host/dw_mmc.c
>> +++ b/drivers/mmc/host/dw_mmc.c
>> @@ -2039,8 +2039,10 @@ int dw_mci_probe(struct dw_mci *host)
>>       tasklet_init(&host->tasklet, dw_mci_tasklet_func, (unsigned long)host);
>>       host->card_workqueue = alloc_workqueue("dw-mci-card",
>>                       WQ_MEM_RECLAIM | WQ_NON_REENTRANT, 1);
>> -     if (!host->card_workqueue)
>> +     if (!host->card_workqueue) {
>> +             err = -ENOMEM;
> ret is expected instead of err.
> err isn't defined.

I'm sorry. Somehow I did not compile for testing this one before
sending. I'll fix, test and resend.

>
> Thanks,
> Seungwon Jeon
>
>>               goto err_dmaunmap;
>> +     }
>>       INIT_WORK(&host->card_work, dw_mci_work_routine_card);
>>       ret = request_irq(host->irq, dw_mci_interrupt, host->irq_flags, "dw-mci", host);
>>       if (ret)
>> --
>> 1.7.11.4
>
> --
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-- 
Peter

[PATCH v2 1/4] drivers/mmc/host/dw_mmc.c: fix error return code

[Peter Senna Tschudin]

From: Peter Senna Tschudin <peter.senna@gmail.com>

Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
---
 drivers/mmc/host/dw_mmc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 36f98c0..43a2663 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2039,8 +2039,10 @@ int dw_mci_probe(struct dw_mci *host)
 	tasklet_init(&host->tasklet, dw_mci_tasklet_func, (unsigned long)host);
 	host->card_workqueue = alloc_workqueue("dw-mci-card",
 			WQ_MEM_RECLAIM | WQ_NON_REENTRANT, 1);
-	if (!host->card_workqueue)
+	if (!host->card_workqueue) {
+		ret = -ENOMEM;
 		goto err_dmaunmap;
+	}
 	INIT_WORK(&host->card_work, dw_mci_work_routine_card);
 	ret = request_irq(host->irq, dw_mci_interrupt, host->irq_flags, "dw-mci", host);
 	if (ret)
-- 
1.7.11.4

RE: [PATCH v2 1/4] drivers/mmc/host/dw_mmc.c: fix error return code

[Seungwon Jeon]

On Monday, September 17, 2012, Peter Senna Tschudin <peter.senna@gmail.com> wrote:
> From: Peter Senna Tschudin <peter.senna@gmail.com>
> 
> Convert a nonnegative error return code to a negative one, as returned
> elsewhere in the function.
> 
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> (
> if@p1 (\(ret < 0\|ret != 0\))
>  { ... return ret; }
> |
> ret@p1 = 0
> )
> ... when != ret = e1
>     when != &ret
> *if(...)
> {
>   ... when != ret = e2
>       when forall
>  return ret;
> }
> // </smpl>
> 
> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>

Looks good.
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>

> --
> 1.7.11.4