* [PATCH v2] fpga: altera-cvp: Fix registration for CvP incapable devices
@ 2018-10-29 7:26 Anatolij Gustschin
2018-10-29 16:59 ` Moritz Fischer
0 siblings, 1 reply; 3+ messages in thread
From: Anatolij Gustschin @ 2018-10-29 7:26 UTC (permalink / raw)
To: atull, mdf; +Cc: linux-fpga, linux-kernel, Andreas Puhm
From: Andreas Puhm <puhm@oregano.at>
The probe function needs to verify the CvP enable bit in order to
properly determine if FPGA Manager functionality can be safely
enabled.
Fixes: 34d1dc17ce97 ("fpga manager: Add Altera CvP driver")
Signed-off-by: Andreas Puhm <puhm@oregano.at>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
---
Changes in v2:
- improve Fixes tag
- wrap lines in commit description
drivers/fpga/altera-cvp.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/fpga/altera-cvp.c b/drivers/fpga/altera-cvp.c
index 3998d4f0e5e7..196d52558990 100644
--- a/drivers/fpga/altera-cvp.c
+++ b/drivers/fpga/altera-cvp.c
@@ -403,6 +403,7 @@ static int altera_cvp_probe(struct pci_dev *pdev,
struct altera_cvp_conf *conf;
struct fpga_manager *mgr;
u16 cmd, val;
+ u32 regval;
int ret;
/*
@@ -419,6 +420,14 @@ static int altera_cvp_probe(struct pci_dev *pdev,
return -ENODEV;
}
+ pci_read_config_dword(pdev, VSE_CVP_STATUS, ®val);
+ if (!(regval & VSE_CVP_STATUS_CVP_EN)) {
+ dev_err(&pdev->dev,
+ "CVP is disabled for this device: CVP_STATUS Reg 0x%x\n",
+ regval);
+ return -ENODEV;
+ }
+
conf = devm_kzalloc(&pdev->dev, sizeof(*conf), GFP_KERNEL);
if (!conf)
return -ENOMEM;
--
2.17.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH v2] fpga: altera-cvp: Fix registration for CvP incapable devices
2018-10-29 7:26 [PATCH v2] fpga: altera-cvp: Fix registration for CvP incapable devices Anatolij Gustschin
@ 2018-10-29 16:59 ` Moritz Fischer
2018-11-01 18:39 ` Alan Tull
0 siblings, 1 reply; 3+ messages in thread
From: Moritz Fischer @ 2018-10-29 16:59 UTC (permalink / raw)
To: Anatolij Gustschin; +Cc: atull, mdf, linux-fpga, linux-kernel, Andreas Puhm
Hi Anatolij, Andreas,
On Mon, Oct 29, 2018 at 08:26:30AM +0100, Anatolij Gustschin wrote:
> From: Andreas Puhm <puhm@oregano.at>
>
> The probe function needs to verify the CvP enable bit in order to
> properly determine if FPGA Manager functionality can be safely
> enabled.
>
> Fixes: 34d1dc17ce97 ("fpga manager: Add Altera CvP driver")
> Signed-off-by: Andreas Puhm <puhm@oregano.at>
> Signed-off-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Moritz Fischer <mdf@kernel.org>
> ---
> Changes in v2:
> - improve Fixes tag
> - wrap lines in commit description
>
> drivers/fpga/altera-cvp.c | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/drivers/fpga/altera-cvp.c b/drivers/fpga/altera-cvp.c
> index 3998d4f0e5e7..196d52558990 100644
> --- a/drivers/fpga/altera-cvp.c
> +++ b/drivers/fpga/altera-cvp.c
> @@ -403,6 +403,7 @@ static int altera_cvp_probe(struct pci_dev *pdev,
> struct altera_cvp_conf *conf;
> struct fpga_manager *mgr;
> u16 cmd, val;
> + u32 regval;
> int ret;
>
> /*
> @@ -419,6 +420,14 @@ static int altera_cvp_probe(struct pci_dev *pdev,
> return -ENODEV;
> }
>
> + pci_read_config_dword(pdev, VSE_CVP_STATUS, ®val);
> + if (!(regval & VSE_CVP_STATUS_CVP_EN)) {
> + dev_err(&pdev->dev,
> + "CVP is disabled for this device: CVP_STATUS Reg 0x%x\n",
> + regval);
> + return -ENODEV;
> + }
> +
> conf = devm_kzalloc(&pdev->dev, sizeof(*conf), GFP_KERNEL);
> if (!conf)
> return -ENOMEM;
> --
> 2.17.1
>
Thanks,
Moritz
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v2] fpga: altera-cvp: Fix registration for CvP incapable devices
2018-10-29 16:59 ` Moritz Fischer
@ 2018-11-01 18:39 ` Alan Tull
0 siblings, 0 replies; 3+ messages in thread
From: Alan Tull @ 2018-11-01 18:39 UTC (permalink / raw)
To: Moritz Fischer; +Cc: Anatolij Gustschin, linux-fpga, linux-kernel, puhm
On Mon, Oct 29, 2018 at 11:59 AM Moritz Fischer <mdf@kernel.org> wrote:
>
> Hi Anatolij, Andreas,
>
> On Mon, Oct 29, 2018 at 08:26:30AM +0100, Anatolij Gustschin wrote:
> > From: Andreas Puhm <puhm@oregano.at>
> >
> > The probe function needs to verify the CvP enable bit in order to
> > properly determine if FPGA Manager functionality can be safely
> > enabled.
> >
> > Fixes: 34d1dc17ce97 ("fpga manager: Add Altera CvP driver")
> > Signed-off-by: Andreas Puhm <puhm@oregano.at>
> > Signed-off-by: Anatolij Gustschin <agust@denx.de>
>
> Reviewed-by: Moritz Fischer <mdf@kernel.org>
Acked-by: Alan Tull <atull@kernel.org>
Thanks!
Alan
> > ---
> > Changes in v2:
> > - improve Fixes tag
> > - wrap lines in commit description
> >
> > drivers/fpga/altera-cvp.c | 9 +++++++++
> > 1 file changed, 9 insertions(+)
> >
> > diff --git a/drivers/fpga/altera-cvp.c b/drivers/fpga/altera-cvp.c
> > index 3998d4f0e5e7..196d52558990 100644
> > --- a/drivers/fpga/altera-cvp.c
> > +++ b/drivers/fpga/altera-cvp.c
> > @@ -403,6 +403,7 @@ static int altera_cvp_probe(struct pci_dev *pdev,
> > struct altera_cvp_conf *conf;
> > struct fpga_manager *mgr;
> > u16 cmd, val;
> > + u32 regval;
> > int ret;
> >
> > /*
> > @@ -419,6 +420,14 @@ static int altera_cvp_probe(struct pci_dev *pdev,
> > return -ENODEV;
> > }
> >
> > + pci_read_config_dword(pdev, VSE_CVP_STATUS, ®val);
> > + if (!(regval & VSE_CVP_STATUS_CVP_EN)) {
> > + dev_err(&pdev->dev,
> > + "CVP is disabled for this device: CVP_STATUS Reg 0x%x\n",
> > + regval);
> > + return -ENODEV;
> > + }
> > +
> > conf = devm_kzalloc(&pdev->dev, sizeof(*conf), GFP_KERNEL);
> > if (!conf)
> > return -ENOMEM;
> > --
> > 2.17.1
> >
>
> Thanks,
> Moritz
^ permalink raw reply [flat|nested] 3+ messages in thread
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2018-10-29 7:26 [PATCH v2] fpga: altera-cvp: Fix registration for CvP incapable devices Anatolij Gustschin
2018-10-29 16:59 ` Moritz Fischer
2018-11-01 18:39 ` Alan Tull
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