[GIT PULL] soc/fsl drivers changes for fix(v5.15)

[GIT PULL] soc/fsl drivers changes for fix(v5.15)

[Li Yang]

Hi soc maintainers,

Please merge the following new changes for soc/fsl drivers.

Regards,
Leo

The following changes since commit 6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f:

  Linux 5.15-rc1 (2021-09-12 16:28:37 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux.git tags/soc-fsl-fix-v5.15

for you to fetch changes up to 7e5e744183bbb0ad02412b21b1e61380c998dd18:

  soc: fsl: dpio: fix qbman alignment error in the virtualization context (2021-10-21 18:20:21 -0500)

----------------------------------------------------------------
NXP/FSL SoC driver fixes for v5.15

DPAA2 DPIO driver
- replace smp_processor_id with raw_smp_processor_id to fix preempt
debug BUG
- use the combined functions to protect critical zone to fix deadlock
- fix qbman alignment error in the virtualization context

DPAA2 console
- free buffer before returning from dpaa2_console_read

----------------------------------------------------------------
Diana Craciun (1):
      soc: fsl: dpio: fix qbman alignment error in the virtualization context

Meng Li (2):
      soc: fsl: dpio: replace smp_processor_id with raw_smp_processor_id
      soc: fsl: dpio: use the combined functions to protect critical zone

Robert-Ionut Alexa (1):
      soc: fsl: dpaa2-console: free buffer before returning from dpaa2_console_read

 drivers/soc/fsl/dpaa2-console.c     |  1 +
 drivers/soc/fsl/dpio/dpio-service.c |  2 +-
 drivers/soc/fsl/dpio/qbman-portal.c | 33 +++++++++++++++------------------
 3 files changed, 17 insertions(+), 19 deletions(-)

[GIT PULL] soc/fsl drivers changes for fix(v5.15)

[Li Yang]

Hi soc maintainers,

Please merge the following new changes for soc/fsl drivers.

Regards,
Leo

The following changes since commit 6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f:

  Linux 5.15-rc1 (2021-09-12 16:28:37 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux.git tags/soc-fsl-fix-v5.15

for you to fetch changes up to 7e5e744183bbb0ad02412b21b1e61380c998dd18:

  soc: fsl: dpio: fix qbman alignment error in the virtualization context (2021-10-21 18:20:21 -0500)

----------------------------------------------------------------
NXP/FSL SoC driver fixes for v5.15

DPAA2 DPIO driver
- replace smp_processor_id with raw_smp_processor_id to fix preempt
debug BUG
- use the combined functions to protect critical zone to fix deadlock
- fix qbman alignment error in the virtualization context

DPAA2 console
- free buffer before returning from dpaa2_console_read

----------------------------------------------------------------
Diana Craciun (1):
      soc: fsl: dpio: fix qbman alignment error in the virtualization context

Meng Li (2):
      soc: fsl: dpio: replace smp_processor_id with raw_smp_processor_id
      soc: fsl: dpio: use the combined functions to protect critical zone

Robert-Ionut Alexa (1):
      soc: fsl: dpaa2-console: free buffer before returning from dpaa2_console_read

 drivers/soc/fsl/dpaa2-console.c     |  1 +
 drivers/soc/fsl/dpio/dpio-service.c |  2 +-
 drivers/soc/fsl/dpio/qbman-portal.c | 33 +++++++++++++++------------------
 3 files changed, 17 insertions(+), 19 deletions(-)

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[GIT PULL] soc/fsl drivers changes for next(v5.16)

[Li Yang]

Hi soc maintainers,

Please merge the following new changes for soc/fsl drivers.

Regards,
Leo

The following changes since commit 6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f:

  Linux 5.15-rc1 (2021-09-12 16:28:37 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux.git tags/soc-fsl-next-v5.16

for you to fetch changes up to 54c8b5b6f8a868b9c21a7b0efe92ed2fbcc67080:

  soc: fsl: dpio: rename the enqueue descriptor variable (2021-10-21 19:38:56 -0500)

----------------------------------------------------------------
NXP/FSL SoC driver updates for v5.16

DPIO Driver
- Code cleanup and fix compile warning

RCMP and Guts Driver
- Make use of the helper function devm_platform_ioremap_resource()

----------------------------------------------------------------
Cai Huoqing (2):
      soc: fsl: guts: Make use of the helper function devm_platform_ioremap_resource()
      soc: fsl: rcpm: Make use of the helper function devm_platform_ioremap_resource()

Ioana Ciornei (1):
      soc: fsl: dpio: use an explicit NULL instead of 0

Youri Querry (1):
      soc: fsl: dpio: rename the enqueue descriptor variable

 drivers/soc/fsl/dpio/dpio-service.c | 2 +-
 drivers/soc/fsl/dpio/qbman-portal.c | 8 ++++----
 drivers/soc/fsl/guts.c              | 4 +---
 drivers/soc/fsl/rcpm.c              | 7 +------
 4 files changed, 7 insertions(+), 14 deletions(-)

[GIT PULL] soc/fsl drivers changes for next(v5.16)

[Li Yang]

Hi soc maintainers,

Please merge the following new changes for soc/fsl drivers.

Regards,
Leo

The following changes since commit 6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f:

  Linux 5.15-rc1 (2021-09-12 16:28:37 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux.git tags/soc-fsl-next-v5.16

for you to fetch changes up to 54c8b5b6f8a868b9c21a7b0efe92ed2fbcc67080:

  soc: fsl: dpio: rename the enqueue descriptor variable (2021-10-21 19:38:56 -0500)

----------------------------------------------------------------
NXP/FSL SoC driver updates for v5.16

DPIO Driver
- Code cleanup and fix compile warning

RCMP and Guts Driver
- Make use of the helper function devm_platform_ioremap_resource()

----------------------------------------------------------------
Cai Huoqing (2):
      soc: fsl: guts: Make use of the helper function devm_platform_ioremap_resource()
      soc: fsl: rcpm: Make use of the helper function devm_platform_ioremap_resource()

Ioana Ciornei (1):
      soc: fsl: dpio: use an explicit NULL instead of 0

Youri Querry (1):
      soc: fsl: dpio: rename the enqueue descriptor variable

 drivers/soc/fsl/dpio/dpio-service.c | 2 +-
 drivers/soc/fsl/dpio/qbman-portal.c | 8 ++++----
 drivers/soc/fsl/guts.c              | 4 +---
 drivers/soc/fsl/rcpm.c              | 7 +------
 4 files changed, 7 insertions(+), 14 deletions(-)

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Re: [GIT PULL] soc/fsl drivers changes for fix(v5.15)

[Arnd Bergmann]

On Fri, Oct 22, 2021 at 3:00 AM Li Yang <leoyang.li@nxp.com> wrote:
> ----------------------------------------------------------------
> NXP/FSL SoC driver fixes for v5.15

> - fix qbman alignment error in the virtualization context

This patch looks very suspicious to me, I don't think it's generally safe to
use memcpy_toio() on a normal pointer, as the __iomem tokens may
be in a separate address range, even though this currently works
on arm64. Adding the  (__iomem void *) cast without a comment that
explains why it's added seems similarly wrong, and finally the
changeset text does not seem to match what the code does:

According to the text, the pointer is to a virtual address mapped as
"device memory" (i.e. PROT_DEVICE_nGnRE or PROT_DEVICE_nGnRnE),
but the code suggests it's actually write-combining normal
(PROT_NORMAL_NC).

I don't see any discussion of this patch on the mailing list either, so
please resend the pull request without this patch, while we try to figure
out what the driver should actually be doing here.

       Arnd

Re: [GIT PULL] soc/fsl drivers changes for fix(v5.15)

[Arnd Bergmann]

On Fri, Oct 22, 2021 at 3:00 AM Li Yang <leoyang.li@nxp.com> wrote:
> ----------------------------------------------------------------
> NXP/FSL SoC driver fixes for v5.15

> - fix qbman alignment error in the virtualization context

This patch looks very suspicious to me, I don't think it's generally safe to
use memcpy_toio() on a normal pointer, as the __iomem tokens may
be in a separate address range, even though this currently works
on arm64. Adding the  (__iomem void *) cast without a comment that
explains why it's added seems similarly wrong, and finally the
changeset text does not seem to match what the code does:

According to the text, the pointer is to a virtual address mapped as
"device memory" (i.e. PROT_DEVICE_nGnRE or PROT_DEVICE_nGnRnE),
but the code suggests it's actually write-combining normal
(PROT_NORMAL_NC).

I don't see any discussion of this patch on the mailing list either, so
please resend the pull request without this patch, while we try to figure
out what the driver should actually be doing here.

       Arnd

Re: [GIT PULL] soc/fsl drivers changes for fix(v5.15)

[Arnd Bergmann]

On Fri, Oct 22, 2021 at 3:00 AM Li Yang <leoyang.li@nxp.com> wrote:
> ----------------------------------------------------------------
> NXP/FSL SoC driver fixes for v5.15

> - fix qbman alignment error in the virtualization context

This patch looks very suspicious to me, I don't think it's generally safe to
use memcpy_toio() on a normal pointer, as the __iomem tokens may
be in a separate address range, even though this currently works
on arm64. Adding the  (__iomem void *) cast without a comment that
explains why it's added seems similarly wrong, and finally the
changeset text does not seem to match what the code does:

According to the text, the pointer is to a virtual address mapped as
"device memory" (i.e. PROT_DEVICE_nGnRE or PROT_DEVICE_nGnRnE),
but the code suggests it's actually write-combining normal
(PROT_NORMAL_NC).

I don't see any discussion of this patch on the mailing list either, so
please resend the pull request without this patch, while we try to figure
out what the driver should actually be doing here.

       Arnd

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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [GIT PULL] soc/fsl drivers changes for next(v5.16)

[patchwork-bot+linux-soc]

Hello:

This pull request was applied to soc/soc.git (for-next)
by Arnd Bergmann <arnd@arndb.de>:

On Thu, 21 Oct 2021 20:00:27 -0500 you wrote:
> Hi soc maintainers,
> 
> Please merge the following new changes for soc/fsl drivers.
> 
> Regards,
> Leo
> 
> [...]

Here is the summary with links:
  - [GIT,PULL] soc/fsl drivers changes for next(v5.16)
    https://git.kernel.org/soc/soc/c/ac2561f921e2

You are awesome, thank you!
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