Re: [PATCH v8 3/3] EDAC: nuvoton: Add NPCM memory controller driver

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Dear Medad,


Thank you for v8.

Am 03.05.22 um 11:47 schrieb Medad CChien:
Add memory controller support for Nuvoton NPCM SoC.

Signed-off-by: Medad CChien <ctcchien@xxxxxxxxxxx>
Reviewed-by: Borislav Petkov <bp@xxxxxxxxx>
Reviewed-by: Paul Menzel <pmenzel@xxxxxxxxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>

This line is confusing.

error:
    macro "edac_printk" requires 4 arguments, but only 2 given

warnings:
    performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
    logical not is only applied to the left hand side of this bitwise operator [-Wlogical-not-parentheses]
    mixing declarations and code is a C99 extension [-Wdeclaration-after-statement]

Note:
    you can force an ecc event by writing a string to edac sysfs node
    and remember to define CONFIG_EDAC_DEBUG to enable this feature
    example: force a correctable event on checkcode bit 0
    echo "CE checkcode 0" > /sys/devices/system/edac/mc/mc0/forced_ecc_error

Shouldn’t this go above all the tags?

---
  drivers/edac/Kconfig     |   9 +
  drivers/edac/Makefile    |   1 +
  drivers/edac/npcm_edac.c | 680 +++++++++++++++++++++++++++++++++++++++
  3 files changed, 690 insertions(+)
  create mode 100644 drivers/edac/npcm_edac.c

diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig
index 58ab63642e72..64149b524f98 100644
--- a/drivers/edac/Kconfig
+++ b/drivers/edac/Kconfig
@@ -539,4 +539,13 @@ config EDAC_DMC520
  	  Support for error detection and correction on the
  	  SoCs with ARM DMC-520 DRAM controller.
+config EDAC_NPCM
+	tristate "Nuvoton NPCM DDR Memory Controller"
+	depends on (ARCH_NPCM || COMPILE_TEST)
+	help
+	  Support for error detection and correction on the Nuvoton NPCM DDR
+	  memory controller.

Please add a blank line below.

+	  First, ECC must be configured in the BootBlock header. Then, this driver
+	  will expose error counters via the EDAC kernel framework.
+
  endif # EDAC

[…]
+module_platform_driver(npcm_edac_mc_driver);
+
+MODULE_AUTHOR("Medad CChien<ctcchien@xxxxxxxxxxx>");

Please add a space before the <.

+MODULE_DESCRIPTION("Nuvoton NPCM EDAC Driver");
+MODULE_LICENSE("GPL v2");


Kind regards,

Paul



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