mbox series

[v3,0/1] nvmem: Handle actual amount of data read/written by suppliers

Message ID 20240510082929.3792559-1-joychakr@google.com (mailing list archive)
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Series nvmem: Handle actual amount of data read/written by suppliers | expand

Message

Joy Chakraborty May 10, 2024, 8:29 a.m. UTC 
This Patch series stems from discussions in patchset,
"[PATCH v2] nvmem: rmem: Fix return value of rmem_read()"
(https://lore.kernel.org/all/20240206042408.224138-1-joychakr@google.com/).
Where we come across the fact that currently the nvmem suppliers do not
actually let the core know how much data has been actually read or written.
Instead they are expected to return 0 for success and the core assumes that
the amount of data written is equal to what the core has requested.

On addition this patchset will also add some guards and checks based on the
count of data returned by the nvmem supplier.
---
V3 Changes : Fix return value of reg_read in sunxi_sid.c driver
---
V2 Changes : Rebase on for-next.
---
V1 Changes : Change read/write callback prototype to ssize_t and
supplier changes to accomodate the same with core checks and bounds.
---

Joy Chakraborty (1):
  nvmem: Change return type of reg read/write to ssize_t

 drivers/nvmem/apple-efuses.c        |  7 +--
 drivers/nvmem/bcm-ocotp.c           | 12 ++---
 drivers/nvmem/brcm_nvram.c          | 10 ++--
 drivers/nvmem/core.c                | 83 +++++++++++++----------------
 drivers/nvmem/imx-iim.c             |  6 +--
 drivers/nvmem/imx-ocotp-ele.c       |  4 +-
 drivers/nvmem/imx-ocotp-scu.c       | 12 ++---
 drivers/nvmem/imx-ocotp.c           | 10 ++--
 drivers/nvmem/jz4780-efuse.c        |  7 +--
 drivers/nvmem/lan9662-otpc.c        | 12 ++---
 drivers/nvmem/layerscape-sfp.c      | 11 ++--
 drivers/nvmem/lpc18xx_eeprom.c      | 14 ++---
 drivers/nvmem/lpc18xx_otp.c         |  6 +--
 drivers/nvmem/meson-efuse.c         | 22 +++++---
 drivers/nvmem/meson-mx-efuse.c      |  6 +--
 drivers/nvmem/microchip-otpc.c      |  6 +--
 drivers/nvmem/mtk-efuse.c           |  6 +--
 drivers/nvmem/mxs-ocotp.c           |  7 +--
 drivers/nvmem/nintendo-otp.c        |  6 +--
 drivers/nvmem/qcom-spmi-sdam.c      | 12 ++---
 drivers/nvmem/qfprom.c              | 14 ++---
 drivers/nvmem/qoriq-efuse.c         |  6 +--
 drivers/nvmem/rave-sp-eeprom.c      | 18 +++----
 drivers/nvmem/rmem.c                |  4 +-
 drivers/nvmem/rockchip-efuse.c      | 19 +++----
 drivers/nvmem/rockchip-otp.c        | 19 +++----
 drivers/nvmem/sc27xx-efuse.c        |  3 +-
 drivers/nvmem/sec-qfprom.c          |  4 +-
 drivers/nvmem/snvs_lpgpr.c          | 17 +++---
 drivers/nvmem/sprd-efuse.c          |  8 +--
 drivers/nvmem/stm32-bsec-optee-ta.c | 12 ++---
 drivers/nvmem/stm32-bsec-optee-ta.h | 20 +++----
 drivers/nvmem/stm32-romem.c         | 26 ++++-----
 drivers/nvmem/sunplus-ocotp.c       |  4 +-
 drivers/nvmem/sunxi_sid.c           | 18 ++++---
 drivers/nvmem/u-boot-env.c          |  6 +--
 drivers/nvmem/uniphier-efuse.c      |  6 +--
 drivers/nvmem/vf610-ocotp.c         |  7 +--
 drivers/nvmem/zynqmp_nvmem.c        | 13 ++---
 include/linux/nvmem-provider.h      |  4 +-
 40 files changed, 255 insertions(+), 232 deletions(-)

Comments

Srinivas Kandagatla June 4, 2024, 4:06 p.m. UTC | #1 
On Fri, 10 May 2024 08:29:28 +0000, Joy Chakraborty wrote:
> This Patch series stems from discussions in patchset,
> "[PATCH v2] nvmem: rmem: Fix return value of rmem_read()"
> (https://lore.kernel.org/all/20240206042408.224138-1-joychakr@google.com/).
> Where we come across the fact that currently the nvmem suppliers do not
> actually let the core know how much data has been actually read or written.
> Instead they are expected to return 0 for success and the core assumes that
> the amount of data written is equal to what the core has requested.
> 
> [...]

Applied, thanks!

[1/1] nvmem: Change return type of reg read/write to ssize_t
      commit: f5de138db5b76de7d96d4cf92f871ba893ba0119

Best regards,