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EDAC/i10nm: Don't fail probing if ADXL is missing

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commit e360a6d65b upstream.

ADXL is not present in Coreboot- or Slimbootloader-based BIOSes and as
result, the driver fails to probe there.

Since commit 2738c69a88 ("EDAC/i10nm: Add driver decoder for Ice Lake
and Tremont CPUs"), i10nm_edac supports driver decoder. Switch to driver
decoding when ADXL is not present.

Signed-off-by: Vasily Khoruzhick <vasilykh@arista.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Cc: stable@vger.kernel.org # v6.1+
Link: https://patch.msgid.link/20260414181735.87023-1-anarsoul@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vasily Khoruzhick
2026-07-24 16:02:53 +02:00
committed by Greg Kroah-Hartman
parent e65505d91f
commit caf08fd5ed
1 changed files with 11 additions and 3 deletions
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drivers/edac/i10nm_base.c
+11 -3
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@@ -88,6 +88,7 @@ static struct res_config *res_cfg;
static int retry_rd_err_log;
static int decoding_via_mca;
static bool mem_cfg_2lm;
static bool no_adxl;
static u32 offsets_scrub_icx[] = {0x22c60, 0x22c54, 0x22c5c, 0x22c58, 0x22c28, 0x20ed8};
static u32 offsets_scrub_spr[] = {0x22c60, 0x22c54, 0x22f08, 0x22c58, 0x22c28, 0x20ed8};
@@ -1173,8 +1174,14 @@ static int __init i10nm_init(void)
}
rc = skx_adxl_get();
if (rc)
goto fail;
if (rc) {
/* Decoding errors via MCA banks for 2LM isn't supported yet */
if (rc != -ENODEV || mem_cfg_2lm)
goto fail;
i10nm_printk(KERN_INFO, "ADXL not found, falling back to MCA-based decoding.\n");
no_adxl = true;
decoding_via_mca = true;
}
opstate_init();
mce_register_decode_chain(&i10nm_mce_dec);
@@ -1208,7 +1215,8 @@ static void __exit i10nm_exit(void)
teardown_i10nm_debug();
mce_unregister_decode_chain(&i10nm_mce_dec);
skx_adxl_put();
if (!no_adxl)
skx_adxl_put();
skx_remove();
}