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* [PATCH 1/2] PCI/switechtec: Add missing __iomem and __user tags to fix sparse warnings
@ 2020-07-28 19:24 Logan Gunthorpe
  2020-07-28 19:24 ` [PATCH 2/2] PCI/switechtec: Add missing __iomem tag " Logan Gunthorpe
  2020-07-29 19:35 ` [PATCH 1/2] PCI/switechtec: Add missing __iomem and __user tags " Bjorn Helgaas
  0 siblings, 2 replies; 3+ messages in thread
From: Logan Gunthorpe @ 2020-07-28 19:24 UTC (permalink / raw)
  To: linux-kernel, linux-pci, Bjorn Helgaas; +Cc: Kelvin.Cao, Logan Gunthorpe

Fix a number of missing __iomem and __user tags in the ioctl functions of
the switchtec driver. This fixes a number of sparse warnings of the form:

  sparse: sparse: incorrect type in ... (different address spaces)

Fixes: 52eabba5bcdb ("switchtec: Add IOCTLs to the Switchtec driver")
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>

---

Here are a couple quick patches to fix some sparse warnings I was
notified about a couple weeks ago.

I've split them into two patches based on Fixes tag, but they could be
squashed depending on the preference.

Thanks!

drivers/pci/switch/switchtec.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
index 850cfeb74608..3d5da7f44378 100644
--- a/drivers/pci/switch/switchtec.c
+++ b/drivers/pci/switch/switchtec.c
@@ -940,7 +940,7 @@ static u32 __iomem *event_hdr_addr(struct switchtec_dev *stdev,
 	size_t off;

 	if (event_id < 0 || event_id >= SWITCHTEC_IOCTL_MAX_EVENTS)
-		return ERR_PTR(-EINVAL);
+		return (u32 __iomem *)ERR_PTR(-EINVAL);

 	off = event_regs[event_id].offset;

@@ -948,10 +948,10 @@ static u32 __iomem *event_hdr_addr(struct switchtec_dev *stdev,
 		if (index == SWITCHTEC_IOCTL_EVENT_LOCAL_PART_IDX)
 			index = stdev->partition;
 		else if (index < 0 || index >= stdev->partition_count)
-			return ERR_PTR(-EINVAL);
+			return (u32 __iomem *)ERR_PTR(-EINVAL);
 	} else if (event_regs[event_id].map_reg == pff_ev_reg) {
 		if (index < 0 || index >= stdev->pff_csr_count)
-			return ERR_PTR(-EINVAL);
+			return (u32 __iomem *)ERR_PTR(-EINVAL);
 	}

 	return event_regs[event_id].map_reg(stdev, off, index);
@@ -1057,11 +1057,11 @@ static int ioctl_event_ctl(struct switchtec_dev *stdev,
 }

 static int ioctl_pff_to_port(struct switchtec_dev *stdev,
-			     struct switchtec_ioctl_pff_port *up)
+			     struct switchtec_ioctl_pff_port __user *up)
 {
 	int i, part;
 	u32 reg;
-	struct part_cfg_regs *pcfg;
+	struct part_cfg_regs __iomem *pcfg;
 	struct switchtec_ioctl_pff_port p;

 	if (copy_from_user(&p, up, sizeof(p)))
@@ -1104,10 +1104,10 @@ static int ioctl_pff_to_port(struct switchtec_dev *stdev,
 }

 static int ioctl_port_to_pff(struct switchtec_dev *stdev,
-			     struct switchtec_ioctl_pff_port *up)
+			     struct switchtec_ioctl_pff_port __user *up)
 {
 	struct switchtec_ioctl_pff_port p;
-	struct part_cfg_regs *pcfg;
+	struct part_cfg_regs __iomem *pcfg;

 	if (copy_from_user(&p, up, sizeof(p)))
 		return -EFAULT;

base-commit: 92ed301919932f777713b9172e525674157e983d
--
2.20.1

^ permalink raw reply related	[flat|nested] 3+ messages in thread

* [PATCH 2/2] PCI/switechtec: Add missing __iomem tag to fix sparse warnings
  2020-07-28 19:24 [PATCH 1/2] PCI/switechtec: Add missing __iomem and __user tags to fix sparse warnings Logan Gunthorpe
@ 2020-07-28 19:24 ` Logan Gunthorpe
  2020-07-29 19:35 ` [PATCH 1/2] PCI/switechtec: Add missing __iomem and __user tags " Bjorn Helgaas
  1 sibling, 0 replies; 3+ messages in thread
From: Logan Gunthorpe @ 2020-07-28 19:24 UTC (permalink / raw)
  To: linux-kernel, linux-pci, Bjorn Helgaas; +Cc: Kelvin.Cao, Logan Gunthorpe

Fix a missing __iomem tag in the init_pfn() function. This fixes a
sparse warning of the form:

   sparse: sparse: incorrect type assignment(different address spaces)

Fixes: 080b47def5e5 ("MicroSemi Switchtec management interface driver")
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
---
 drivers/pci/switch/switchtec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
index 3d5da7f44378..ba52459928f7 100644
--- a/drivers/pci/switch/switchtec.c
+++ b/drivers/pci/switch/switchtec.c
@@ -1484,7 +1484,7 @@ static void init_pff(struct switchtec_dev *stdev)
 {
 	int i;
 	u32 reg;
-	struct part_cfg_regs *pcfg = stdev->mmio_part_cfg;
+	struct part_cfg_regs __iomem *pcfg = stdev->mmio_part_cfg;
 
 	for (i = 0; i < SWITCHTEC_MAX_PFF_CSR; i++) {
 		reg = ioread16(&stdev->mmio_pff_csr[i].vendor_id);
-- 
2.20.1


^ permalink raw reply related	[flat|nested] 3+ messages in thread

* Re: [PATCH 1/2] PCI/switechtec: Add missing __iomem and __user tags to fix sparse warnings
  2020-07-28 19:24 [PATCH 1/2] PCI/switechtec: Add missing __iomem and __user tags to fix sparse warnings Logan Gunthorpe
  2020-07-28 19:24 ` [PATCH 2/2] PCI/switechtec: Add missing __iomem tag " Logan Gunthorpe
@ 2020-07-29 19:35 ` Bjorn Helgaas
  1 sibling, 0 replies; 3+ messages in thread
From: Bjorn Helgaas @ 2020-07-29 19:35 UTC (permalink / raw)
  To: Logan Gunthorpe; +Cc: linux-kernel, linux-pci, Bjorn Helgaas, Kelvin.Cao

On Tue, Jul 28, 2020 at 01:24:33PM -0600, Logan Gunthorpe wrote:
> Fix a number of missing __iomem and __user tags in the ioctl functions of
> the switchtec driver. This fixes a number of sparse warnings of the form:
> 
>   sparse: sparse: incorrect type in ... (different address spaces)
> 
> Fixes: 52eabba5bcdb ("switchtec: Add IOCTLs to the Switchtec driver")
> Signed-off-by: Logan Gunthorpe <logang@deltatee.com>

Applied to pci/switchtec for v5.9, thanks!

> ---
> 
> Here are a couple quick patches to fix some sparse warnings I was
> notified about a couple weeks ago.
> 
> I've split them into two patches based on Fixes tag, but they could be
> squashed depending on the preference.
> 
> Thanks!
> 
> drivers/pci/switch/switchtec.c | 14 +++++++-------
>  1 file changed, 7 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c
> index 850cfeb74608..3d5da7f44378 100644
> --- a/drivers/pci/switch/switchtec.c
> +++ b/drivers/pci/switch/switchtec.c
> @@ -940,7 +940,7 @@ static u32 __iomem *event_hdr_addr(struct switchtec_dev *stdev,
>  	size_t off;
> 
>  	if (event_id < 0 || event_id >= SWITCHTEC_IOCTL_MAX_EVENTS)
> -		return ERR_PTR(-EINVAL);
> +		return (u32 __iomem *)ERR_PTR(-EINVAL);
> 
>  	off = event_regs[event_id].offset;
> 
> @@ -948,10 +948,10 @@ static u32 __iomem *event_hdr_addr(struct switchtec_dev *stdev,
>  		if (index == SWITCHTEC_IOCTL_EVENT_LOCAL_PART_IDX)
>  			index = stdev->partition;
>  		else if (index < 0 || index >= stdev->partition_count)
> -			return ERR_PTR(-EINVAL);
> +			return (u32 __iomem *)ERR_PTR(-EINVAL);
>  	} else if (event_regs[event_id].map_reg == pff_ev_reg) {
>  		if (index < 0 || index >= stdev->pff_csr_count)
> -			return ERR_PTR(-EINVAL);
> +			return (u32 __iomem *)ERR_PTR(-EINVAL);
>  	}
> 
>  	return event_regs[event_id].map_reg(stdev, off, index);
> @@ -1057,11 +1057,11 @@ static int ioctl_event_ctl(struct switchtec_dev *stdev,
>  }
> 
>  static int ioctl_pff_to_port(struct switchtec_dev *stdev,
> -			     struct switchtec_ioctl_pff_port *up)
> +			     struct switchtec_ioctl_pff_port __user *up)
>  {
>  	int i, part;
>  	u32 reg;
> -	struct part_cfg_regs *pcfg;
> +	struct part_cfg_regs __iomem *pcfg;
>  	struct switchtec_ioctl_pff_port p;
> 
>  	if (copy_from_user(&p, up, sizeof(p)))
> @@ -1104,10 +1104,10 @@ static int ioctl_pff_to_port(struct switchtec_dev *stdev,
>  }
> 
>  static int ioctl_port_to_pff(struct switchtec_dev *stdev,
> -			     struct switchtec_ioctl_pff_port *up)
> +			     struct switchtec_ioctl_pff_port __user *up)
>  {
>  	struct switchtec_ioctl_pff_port p;
> -	struct part_cfg_regs *pcfg;
> +	struct part_cfg_regs __iomem *pcfg;
> 
>  	if (copy_from_user(&p, up, sizeof(p)))
>  		return -EFAULT;
> 
> base-commit: 92ed301919932f777713b9172e525674157e983d
> --
> 2.20.1

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2020-07-29 19:35 UTC | newest]

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2020-07-28 19:24 [PATCH 1/2] PCI/switechtec: Add missing __iomem and __user tags to fix sparse warnings Logan Gunthorpe
2020-07-28 19:24 ` [PATCH 2/2] PCI/switechtec: Add missing __iomem tag " Logan Gunthorpe
2020-07-29 19:35 ` [PATCH 1/2] PCI/switechtec: Add missing __iomem and __user tags " Bjorn Helgaas

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