* [PATCH 0/8 v2] PCI: Align return values of PCIe capability and PCI accessors
@ 2020-06-15 7:32 refactormyself
2020-06-15 7:32 ` [PATCH v2 2/8] IB/hfi1: Convert PCIBIOS_* errors to generic -E* errors refactormyself
` (4 more replies)
0 siblings, 5 replies; 8+ messages in thread
From: refactormyself @ 2020-06-15 7:32 UTC (permalink / raw)
To: helgaas
Cc: Bolarinwa Olayemi Saheed, bjorn, skhan, linux-pci, Vinod Koul,
dmaengine, Mike Marciniszyn, Dennis Dalessandro, Doug Ledford,
Jason Gunthorpe, linux-rdma, Don Brace, James E.J. Bottomley,
Martin K. Petersen, esc.storagedev, linux-scsi, Russell Currey,
Sam Bobroff, Oliver O'Halloran, linuxppc-dev,
linux-kernel-mentees, linux-kernel
From: Bolarinwa Olayemi Saheed <refactormyself@gmail.com>
PATCH 1/8 to 7/8:
PCIBIOS_ error codes have positive values and they are passed down the
call heirarchy from accessors. For functions which are meant to return
only a negative value on failure, passing on this value is a bug.
To mitigate this, call pcibios_err_to_errno() before passing on return
value from PCIe capability accessors call heirarchy. This function
converts any positive PCIBIOS_ error codes to negative generic error
values.
PATCH 8/8:
The PCIe capability accessors can return 0, -EINVAL, or any PCIBIOS_ error
code. The pci accessor on the other hand can only return 0 or any PCIBIOS_
error code.This inconsistency among these accessor makes it harder for
callers to check for errors.
Return PCIBIOS_BAD_REGISTER_NUMBER instead of -EINVAL in all PCIe
capability accessors.
MERGING:
These may all be merged via the PCI tree, since it is a collection of
similar fixes. This way they all get merged at once.
Version 2:
* cc to maintainers and mailing lists
* Edit the Subject to conform with previous style
* reorder "Signed by" and "Suggested by"
* made spelling corrections
* fixed redundant initialisation in PATCH 3/8
* include missing call to pcibios_err_to_errno() in PATCH 6/8 and 7/8
Bolarinwa Olayemi Saheed (8):
dmaengine: ioatdma: Convert PCIBIOS_* errors to generic -E* errors
IB/hfi1: Convert PCIBIOS_* errors to generic -E* errors
IB/hfi1: Convert PCIBIOS_* errors to generic -E* errors
PCI: Convert PCIBIOS_* errors to generic -E* errors
scsi: smartpqi: Convert PCIBIOS_* errors to generic -E* errors
PCI/AER: Convert PCIBIOS_* errors to generic -E* errors
PCI/AER: Convert PCIBIOS_* errors to generic -E* errors
PCI: Align return values of PCIe capability and PCI accessorss
drivers/dma/ioat/init.c | 4 ++--
drivers/infiniband/hw/hfi1/pcie.c | 18 +++++++++++++-----
drivers/pci/access.c | 8 ++++----
drivers/pci/pci.c | 10 ++++++++--
drivers/pci/pcie/aer.c | 12 ++++++++++--
drivers/scsi/smartpqi/smartpqi_init.c | 6 +++++-
6 files changed, 42 insertions(+), 16 deletions(-)
--
2.18.2
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH v2 2/8] IB/hfi1: Convert PCIBIOS_* errors to generic -E* errors
2020-06-15 7:32 [PATCH 0/8 v2] PCI: Align return values of PCIe capability and PCI accessors refactormyself
@ 2020-06-15 7:32 ` refactormyself
2020-06-29 20:09 ` Dennis Dalessandro
2020-06-15 7:32 ` [PATCH v2 3/8] " refactormyself
` (3 subsequent siblings)
4 siblings, 1 reply; 8+ messages in thread
From: refactormyself @ 2020-06-15 7:32 UTC (permalink / raw)
To: helgaas
Cc: Bolarinwa Olayemi Saheed, bjorn, linux-pci, skhan,
Mike Marciniszyn, Dennis Dalessandro, Doug Ledford,
Jason Gunthorpe, linux-rdma, linux-kernel-mentees, linux-kernel
From: Bolarinwa Olayemi Saheed <refactormyself@gmail.com>
pcie_speeds() returns PCIBIOS_ error codes from PCIe capability accessors.
PCIBIOS_ error codes have positive values. Passing on these values is
inconsistent with functions which return only a negative value on failure.
Before passing on the return value of PCIe capability accessors, call
pcibios_err_to_errno() to convert any positive PCIBIOS_ error codes to
negative generic error values.
Suggested-by: Bjorn Helgaas <bjorn@helgaas.com>
Signed-off-by: Bolarinwa Olayemi Saheed <refactormyself@gmail.com>
---
drivers/infiniband/hw/hfi1/pcie.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/hw/hfi1/pcie.c b/drivers/infiniband/hw/hfi1/pcie.c
index 1a6268d61977..eb53781d0c6a 100644
--- a/drivers/infiniband/hw/hfi1/pcie.c
+++ b/drivers/infiniband/hw/hfi1/pcie.c
@@ -306,7 +306,7 @@ int pcie_speeds(struct hfi1_devdata *dd)
ret = pcie_capability_read_dword(dd->pcidev, PCI_EXP_LNKCAP, &linkcap);
if (ret) {
dd_dev_err(dd, "Unable to read from PCI config\n");
- return ret;
+ return pcibios_err_to_errno(ret);
}
if ((linkcap & PCI_EXP_LNKCAP_SLS) != PCI_EXP_LNKCAP_SLS_8_0GB) {
--
2.18.2
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PATCH v2 3/8] IB/hfi1: Convert PCIBIOS_* errors to generic -E* errors
2020-06-15 7:32 [PATCH 0/8 v2] PCI: Align return values of PCIe capability and PCI accessors refactormyself
2020-06-15 7:32 ` [PATCH v2 2/8] IB/hfi1: Convert PCIBIOS_* errors to generic -E* errors refactormyself
@ 2020-06-15 7:32 ` refactormyself
2020-06-29 20:22 ` Dennis Dalessandro
2020-06-15 13:46 ` [PATCH 0/8 v2] PCI: Align return values of PCIe capability and PCI accessors Jason Gunthorpe
` (2 subsequent siblings)
4 siblings, 1 reply; 8+ messages in thread
From: refactormyself @ 2020-06-15 7:32 UTC (permalink / raw)
To: helgaas
Cc: Bolarinwa Olayemi Saheed, bjorn, linux-pci, skhan,
Mike Marciniszyn, Dennis Dalessandro, Doug Ledford,
Jason Gunthorpe, linux-rdma, linux-kernel-mentees, linux-kernel
From: Bolarinwa Olayemi Saheed <refactormyself@gmail.com>
restore_pci_variables() and save_pci_variables() return PCIBIOS_ error
codes from PCIe capability accessors.
PCIBIOS_ error codes have positive values. Passing on these values is
inconsistent with functions which return only a negative value on failure.
Before passing on the return value of PCIe capability accessors, call
pcibios_err_to_errno() to convert any positive PCIBIOS_ error codes to
negative generic error values.
Fix redundant initialisation.
Suggested-by: Bjorn Helgaas <bjorn@helgaas.com>
Signed-off-by: Bolarinwa Olayemi Saheed <refactormyself@gmail.com>
---
drivers/infiniband/hw/hfi1/pcie.c | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/drivers/infiniband/hw/hfi1/pcie.c b/drivers/infiniband/hw/hfi1/pcie.c
index 1a6268d61977..2a45f34ac6c8 100644
--- a/drivers/infiniband/hw/hfi1/pcie.c
+++ b/drivers/infiniband/hw/hfi1/pcie.c
@@ -334,10 +334,14 @@ int pcie_speeds(struct hfi1_devdata *dd)
return 0;
}
-/* restore command and BARs after a reset has wiped them out */
+/**
+ * Restore command and BARs after a reset has wiped them out
+ *
+ * Returns 0 on success, otherwise a negative error value
+ */
int restore_pci_variables(struct hfi1_devdata *dd)
{
- int ret = 0;
+ int ret;
ret = pci_write_config_word(dd->pcidev, PCI_COMMAND, dd->pci_command);
if (ret)
@@ -386,13 +390,17 @@ int restore_pci_variables(struct hfi1_devdata *dd)
error:
dd_dev_err(dd, "Unable to write to PCI config\n");
- return ret;
+ return pcibios_err_to_errno(ret);
}
-/* Save BARs and command to rewrite after device reset */
+/**
+ * Save BARs and command to rewrite after device reset
+ *
+ * Returns 0 on success, otherwise a negative error value
+ */
int save_pci_variables(struct hfi1_devdata *dd)
{
- int ret = 0;
+ int ret;
ret = pci_read_config_dword(dd->pcidev, PCI_BASE_ADDRESS_0,
&dd->pcibar0);
@@ -441,7 +449,7 @@ int save_pci_variables(struct hfi1_devdata *dd)
error:
dd_dev_err(dd, "Unable to read from PCI config\n");
- return ret;
+ return pcibios_err_to_errno(ret);
}
/*
--
2.18.2
^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [PATCH 0/8 v2] PCI: Align return values of PCIe capability and PCI accessors
2020-06-15 7:32 [PATCH 0/8 v2] PCI: Align return values of PCIe capability and PCI accessors refactormyself
2020-06-15 7:32 ` [PATCH v2 2/8] IB/hfi1: Convert PCIBIOS_* errors to generic -E* errors refactormyself
2020-06-15 7:32 ` [PATCH v2 3/8] " refactormyself
@ 2020-06-15 13:46 ` Jason Gunthorpe
2020-06-26 18:52 ` Bjorn Helgaas
2020-06-30 16:24 ` Jason Gunthorpe
4 siblings, 0 replies; 8+ messages in thread
From: Jason Gunthorpe @ 2020-06-15 13:46 UTC (permalink / raw)
To: refactormyself
Cc: helgaas, bjorn, skhan, linux-pci, Vinod Koul, dmaengine,
Mike Marciniszyn, Dennis Dalessandro, Doug Ledford, linux-rdma,
Don Brace, James E.J. Bottomley, Martin K. Petersen,
esc.storagedev, linux-scsi, Russell Currey, Sam Bobroff,
Oliver O'Halloran, linuxppc-dev, linux-kernel-mentees,
linux-kernel
On Mon, Jun 15, 2020 at 09:32:17AM +0200, refactormyself@gmail.com wrote:
> From: Bolarinwa Olayemi Saheed <refactormyself@gmail.com>
>
>
> PATCH 1/8 to 7/8:
> PCIBIOS_ error codes have positive values and they are passed down the
> call heirarchy from accessors. For functions which are meant to return
> only a negative value on failure, passing on this value is a bug.
> To mitigate this, call pcibios_err_to_errno() before passing on return
> value from PCIe capability accessors call heirarchy. This function
> converts any positive PCIBIOS_ error codes to negative generic error
> values.
>
> PATCH 8/8:
> The PCIe capability accessors can return 0, -EINVAL, or any PCIBIOS_ error
> code. The pci accessor on the other hand can only return 0 or any PCIBIOS_
> error code.This inconsistency among these accessor makes it harder for
> callers to check for errors.
> Return PCIBIOS_BAD_REGISTER_NUMBER instead of -EINVAL in all PCIe
> capability accessors.
>
> MERGING:
> These may all be merged via the PCI tree, since it is a collection of
> similar fixes. This way they all get merged at once.
I prefer this not happen for active trees, it just risks needless
merge conflicts.
I will take the hfi1 patches at least, let me know when they are
reviewed
Thanks,
Jason
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH 0/8 v2] PCI: Align return values of PCIe capability and PCI accessors
2020-06-15 7:32 [PATCH 0/8 v2] PCI: Align return values of PCIe capability and PCI accessors refactormyself
` (2 preceding siblings ...)
2020-06-15 13:46 ` [PATCH 0/8 v2] PCI: Align return values of PCIe capability and PCI accessors Jason Gunthorpe
@ 2020-06-26 18:52 ` Bjorn Helgaas
2020-06-30 16:24 ` Jason Gunthorpe
4 siblings, 0 replies; 8+ messages in thread
From: Bjorn Helgaas @ 2020-06-26 18:52 UTC (permalink / raw)
To: refactormyself
Cc: bjorn, skhan, linux-pci, Vinod Koul, dmaengine, Mike Marciniszyn,
Dennis Dalessandro, Doug Ledford, Jason Gunthorpe, linux-rdma,
Don Brace, James E.J. Bottomley, Martin K. Petersen,
esc.storagedev, linux-scsi, Russell Currey, Sam Bobroff,
Oliver O'Halloran, linuxppc-dev, linux-kernel-mentees,
linux-kernel
On Mon, Jun 15, 2020 at 09:32:17AM +0200, refactormyself@gmail.com wrote:
> From: Bolarinwa Olayemi Saheed <refactormyself@gmail.com>
>
>
> PATCH 1/8 to 7/8:
> PCIBIOS_ error codes have positive values and they are passed down the
> call heirarchy from accessors. For functions which are meant to return
> only a negative value on failure, passing on this value is a bug.
> To mitigate this, call pcibios_err_to_errno() before passing on return
> value from PCIe capability accessors call heirarchy. This function
> converts any positive PCIBIOS_ error codes to negative generic error
> values.
>
> PATCH 8/8:
> The PCIe capability accessors can return 0, -EINVAL, or any PCIBIOS_ error
> code. The pci accessor on the other hand can only return 0 or any PCIBIOS_
> error code.This inconsistency among these accessor makes it harder for
> callers to check for errors.
> Return PCIBIOS_BAD_REGISTER_NUMBER instead of -EINVAL in all PCIe
> capability accessors.
>
> MERGING:
> These may all be merged via the PCI tree, since it is a collection of
> similar fixes. This way they all get merged at once.
>
> Version 2:
> * cc to maintainers and mailing lists
> * Edit the Subject to conform with previous style
> * reorder "Signed by" and "Suggested by"
> * made spelling corrections
> * fixed redundant initialisation in PATCH 3/8
> * include missing call to pcibios_err_to_errno() in PATCH 6/8 and 7/8
>
>
> Bolarinwa Olayemi Saheed (8):
> dmaengine: ioatdma: Convert PCIBIOS_* errors to generic -E* errors
> IB/hfi1: Convert PCIBIOS_* errors to generic -E* errors
> IB/hfi1: Convert PCIBIOS_* errors to generic -E* errors
> PCI: Convert PCIBIOS_* errors to generic -E* errors
> scsi: smartpqi: Convert PCIBIOS_* errors to generic -E* errors
> PCI/AER: Convert PCIBIOS_* errors to generic -E* errors
> PCI/AER: Convert PCIBIOS_* errors to generic -E* errors
> PCI: Align return values of PCIe capability and PCI accessorss
>
> drivers/dma/ioat/init.c | 4 ++--
> drivers/infiniband/hw/hfi1/pcie.c | 18 +++++++++++++-----
> drivers/pci/access.c | 8 ++++----
> drivers/pci/pci.c | 10 ++++++++--
> drivers/pci/pcie/aer.c | 12 ++++++++++--
> drivers/scsi/smartpqi/smartpqi_init.c | 6 +++++-
> 6 files changed, 42 insertions(+), 16 deletions(-)
Since these are really fixing a single PCI API problem, not individual
driver-related problems, I squashed the pcibios_err_to_errno() patches
together (except IB/hfi1, since Jason will take those separately) and
applied them to pci/misc, thanks!
The squashed patch as applied is:
commit d20df83b66cc ("PCI: Convert PCIe capability PCIBIOS errors to errno")
Author: Bolarinwa Olayemi Saheed <refactormyself@gmail.com>
Date: Mon Jun 15 09:32:18 2020 +0200
PCI: Convert PCIe capability PCIBIOS errors to errno
The PCI config accessors (pci_read_config_word(), et al) return
PCIBIOS_SUCCESSFUL (zero) or positive error values like
PCIBIOS_FUNC_NOT_SUPPORTED.
The PCIe capability accessors (pcie_capability_read_word(), et al)
similarly return PCIBIOS errors, but some callers assume they return
generic errno values like -EINVAL.
For example, the Myri-10G probe function returns a positive PCIBIOS error
if the pcie_capability_clear_and_set_word() in pcie_set_readrq() fails:
myri10ge_probe
status = pcie_set_readrq
return pcie_capability_clear_and_set_word
if (status)
return status
A positive return from a PCI driver probe function would cause a "Driver
probe function unexpectedly returned" warning from local_pci_probe()
instead of the desired probe failure.
Convert PCIBIOS errors to generic errno for all callers of:
pcie_capability_read_word
pcie_capability_read_dword
pcie_capability_write_word
pcie_capability_write_dword
pcie_capability_set_word
pcie_capability_set_dword
pcie_capability_clear_word
pcie_capability_clear_dword
pcie_capability_clear_and_set_word
pcie_capability_clear_and_set_dword
that check the return code for anything other than zero.
[bhelgaas: commit log, squash together]
Suggested-by: Bjorn Helgaas <bjorn@helgaas.com>
Link: https://lore.kernel.org/r/20200615073225.24061-1-refactormyself@gmail.com
Signed-off-by: Bolarinwa Olayemi Saheed <refactormyself@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c
index 58d13564f88b..9a6a9ec3cf48 100644
--- a/drivers/dma/ioat/init.c
+++ b/drivers/dma/ioat/init.c
@@ -1195,13 +1195,13 @@ static int ioat3_dma_probe(struct ioatdma_device *ioat_dma, int dca)
/* disable relaxed ordering */
err = pcie_capability_read_word(pdev, IOAT_DEVCTRL_OFFSET, &val16);
if (err)
- return err;
+ return pcibios_err_to_errno(err);
/* clear relaxed ordering enable */
val16 &= ~IOAT_DEVCTRL_ROE;
err = pcie_capability_write_word(pdev, IOAT_DEVCTRL_OFFSET, val16);
if (err)
- return err;
+ return pcibios_err_to_errno(err);
if (ioat_dma->cap & IOAT_CAP_DPS)
writeb(ioat_pending_level + 1,
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index ce096272f52b..45c51aff9c03 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -5688,6 +5688,7 @@ EXPORT_SYMBOL(pcie_get_readrq);
int pcie_set_readrq(struct pci_dev *dev, int rq)
{
u16 v;
+ int ret;
if (rq < 128 || rq > 4096 || !is_power_of_2(rq))
return -EINVAL;
@@ -5706,8 +5707,10 @@ int pcie_set_readrq(struct pci_dev *dev, int rq)
v = (ffs(rq) - 8) << 12;
- return pcie_capability_clear_and_set_word(dev, PCI_EXP_DEVCTL,
+ ret = pcie_capability_clear_and_set_word(dev, PCI_EXP_DEVCTL,
PCI_EXP_DEVCTL_READRQ, v);
+
+ return pcibios_err_to_errno(ret);
}
EXPORT_SYMBOL(pcie_set_readrq);
@@ -5738,6 +5741,7 @@ EXPORT_SYMBOL(pcie_get_mps);
int pcie_set_mps(struct pci_dev *dev, int mps)
{
u16 v;
+ int ret;
if (mps < 128 || mps > 4096 || !is_power_of_2(mps))
return -EINVAL;
@@ -5747,8 +5751,10 @@ int pcie_set_mps(struct pci_dev *dev, int mps)
return -EINVAL;
v <<= 5;
- return pcie_capability_clear_and_set_word(dev, PCI_EXP_DEVCTL,
+ ret = pcie_capability_clear_and_set_word(dev, PCI_EXP_DEVCTL,
PCI_EXP_DEVCTL_PAYLOAD, v);
+
+ return pcibios_err_to_errno(ret);
}
EXPORT_SYMBOL(pcie_set_mps);
diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
index 3acf56683915..2dbc1fd2910b 100644
--- a/drivers/pci/pcie/aer.c
+++ b/drivers/pci/pcie/aer.c
@@ -224,20 +224,25 @@ int pcie_aer_is_native(struct pci_dev *dev)
int pci_enable_pcie_error_reporting(struct pci_dev *dev)
{
+ int rc;
+
if (!pcie_aer_is_native(dev))
return -EIO;
- return pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_AER_FLAGS);
+ rc = pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_AER_FLAGS);
+ return pcibios_err_to_errno(rc);
}
EXPORT_SYMBOL_GPL(pci_enable_pcie_error_reporting);
int pci_disable_pcie_error_reporting(struct pci_dev *dev)
{
+ int rc;
+
if (!pcie_aer_is_native(dev))
return -EIO;
- return pcie_capability_clear_word(dev, PCI_EXP_DEVCTL,
- PCI_EXP_AER_FLAGS);
+ rc = pcie_capability_clear_word(dev, PCI_EXP_DEVCTL, PCI_EXP_AER_FLAGS);
+ return pcibios_err_to_errno(rc);
}
EXPORT_SYMBOL_GPL(pci_disable_pcie_error_reporting);
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index cd157f11eb22..bd38c8cea56e 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -7423,8 +7423,12 @@ static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info)
static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev,
u16 timeout)
{
- return pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2,
+ int rc;
+
+ rc = pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2,
PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout);
+
+ return pcibios_err_to_errno(rc);
}
static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info)
^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [PATCH v2 2/8] IB/hfi1: Convert PCIBIOS_* errors to generic -E* errors
2020-06-15 7:32 ` [PATCH v2 2/8] IB/hfi1: Convert PCIBIOS_* errors to generic -E* errors refactormyself
@ 2020-06-29 20:09 ` Dennis Dalessandro
0 siblings, 0 replies; 8+ messages in thread
From: Dennis Dalessandro @ 2020-06-29 20:09 UTC (permalink / raw)
To: refactormyself, helgaas
Cc: bjorn, linux-pci, skhan, Mike Marciniszyn, Doug Ledford,
Jason Gunthorpe, linux-rdma, linux-kernel-mentees, linux-kernel
On 6/15/2020 3:32 AM, refactormyself@gmail.com wrote:
> From: Bolarinwa Olayemi Saheed <refactormyself@gmail.com>
>
> pcie_speeds() returns PCIBIOS_ error codes from PCIe capability accessors.
>
> PCIBIOS_ error codes have positive values. Passing on these values is
> inconsistent with functions which return only a negative value on failure.
>
> Before passing on the return value of PCIe capability accessors, call
> pcibios_err_to_errno() to convert any positive PCIBIOS_ error codes to
> negative generic error values.
>
> Suggested-by: Bjorn Helgaas <bjorn@helgaas.com>
> Signed-off-by: Bolarinwa Olayemi Saheed <refactormyself@gmail.com>
> ---
> drivers/infiniband/hw/hfi1/pcie.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/infiniband/hw/hfi1/pcie.c b/drivers/infiniband/hw/hfi1/pcie.c
> index 1a6268d61977..eb53781d0c6a 100644
> --- a/drivers/infiniband/hw/hfi1/pcie.c
> +++ b/drivers/infiniband/hw/hfi1/pcie.c
> @@ -306,7 +306,7 @@ int pcie_speeds(struct hfi1_devdata *dd)
> ret = pcie_capability_read_dword(dd->pcidev, PCI_EXP_LNKCAP, &linkcap);
> if (ret) {
> dd_dev_err(dd, "Unable to read from PCI config\n");
> - return ret;
> + return pcibios_err_to_errno(ret);
> }
>
> if ((linkcap & PCI_EXP_LNKCAP_SLS) != PCI_EXP_LNKCAP_SLS_8_0GB) {
>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH v2 3/8] IB/hfi1: Convert PCIBIOS_* errors to generic -E* errors
2020-06-15 7:32 ` [PATCH v2 3/8] " refactormyself
@ 2020-06-29 20:22 ` Dennis Dalessandro
0 siblings, 0 replies; 8+ messages in thread
From: Dennis Dalessandro @ 2020-06-29 20:22 UTC (permalink / raw)
To: refactormyself, helgaas
Cc: bjorn, linux-pci, skhan, Mike Marciniszyn, Doug Ledford,
Jason Gunthorpe, linux-rdma, linux-kernel-mentees, linux-kernel
On 6/15/2020 3:32 AM, refactormyself@gmail.com wrote:
> From: Bolarinwa Olayemi Saheed <refactormyself@gmail.com>
>
> restore_pci_variables() and save_pci_variables() return PCIBIOS_ error
> codes from PCIe capability accessors.
>
> PCIBIOS_ error codes have positive values. Passing on these values is
> inconsistent with functions which return only a negative value on failure.
>
> Before passing on the return value of PCIe capability accessors, call
> pcibios_err_to_errno() to convert any positive PCIBIOS_ error codes to
> negative generic error values.
>
> Fix redundant initialisation.
>
> Suggested-by: Bjorn Helgaas <bjorn@helgaas.com>
> Signed-off-by: Bolarinwa Olayemi Saheed <refactormyself@gmail.com>
Looks like we may have had a problem when calling
pci_read_config_dword() from the init dd path and doing a check for < 0
to bail. So this looks like goodness to me.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH 0/8 v2] PCI: Align return values of PCIe capability and PCI accessors
2020-06-15 7:32 [PATCH 0/8 v2] PCI: Align return values of PCIe capability and PCI accessors refactormyself
` (3 preceding siblings ...)
2020-06-26 18:52 ` Bjorn Helgaas
@ 2020-06-30 16:24 ` Jason Gunthorpe
4 siblings, 0 replies; 8+ messages in thread
From: Jason Gunthorpe @ 2020-06-30 16:24 UTC (permalink / raw)
To: refactormyself
Cc: helgaas, bjorn, skhan, linux-pci, Vinod Koul, dmaengine,
Mike Marciniszyn, Dennis Dalessandro, Doug Ledford, linux-rdma,
Don Brace, James E.J. Bottomley, Martin K. Petersen,
esc.storagedev, linux-scsi, Russell Currey, Sam Bobroff,
Oliver O'Halloran, linuxppc-dev, linux-kernel-mentees,
linux-kernel
On Mon, Jun 15, 2020 at 09:32:17AM +0200, refactormyself@gmail.com wrote:
> Bolarinwa Olayemi Saheed (8):
> IB/hfi1: Convert PCIBIOS_* errors to generic -E* errors
> IB/hfi1: Convert PCIBIOS_* errors to generic -E* errors
Applied to rdma for-next thanks
Jason
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2020-06-30 16:24 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
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2020-06-15 7:32 [PATCH 0/8 v2] PCI: Align return values of PCIe capability and PCI accessors refactormyself
2020-06-15 7:32 ` [PATCH v2 2/8] IB/hfi1: Convert PCIBIOS_* errors to generic -E* errors refactormyself
2020-06-29 20:09 ` Dennis Dalessandro
2020-06-15 7:32 ` [PATCH v2 3/8] " refactormyself
2020-06-29 20:22 ` Dennis Dalessandro
2020-06-15 13:46 ` [PATCH 0/8 v2] PCI: Align return values of PCIe capability and PCI accessors Jason Gunthorpe
2020-06-26 18:52 ` Bjorn Helgaas
2020-06-30 16:24 ` Jason Gunthorpe
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