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misc: amd-sbi: CPUID/MCAMSR protocol for Revision 0x21

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- CPUID and MCAMSR protocol for newer platform with revision
  0x21 and later is modified as per two byte register address size.
- Modify the CPUID and MCAMSR protocol to return error, "-EOPNOTSUPP",
  for revision 0x21.
- Next set of patches will add support for CPUID and MCAMSR for Turin and
  later platforms.

Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com>
Signed-off-by: Akshay Gupta <akshay.gupta@amd.com>
Link: https://patch.msgid.link/20250915103649.1705078-4-akshay.gupta@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Akshay Gupta
2025-09-15 10:36:47 +00:00
committed by Greg Kroah-Hartman
parent 45392fd439
commit dd68c06380
1 changed files with 4 additions and 4 deletions
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8
drivers/misc/amd-sbi/rmi-core.c
View File

@@ -122,8 +122,8 @@ static int rmi_cpuid_read(struct sbrmi_data *data,
if (ret < 0)
goto exit_unlock;
}
/* CPUID protocol for REV 0x10 is not supported*/
if (data->rev == 0x10) {
/* CPUID protocol for REV 0x20 is only supported*/
if (data->rev != 0x20) {
ret = -EOPNOTSUPP;
goto exit_unlock;
}
@@ -203,8 +203,8 @@ static int rmi_mca_msr_read(struct sbrmi_data *data,
if (ret < 0)
goto exit_unlock;
}
/* MCA MSR protocol for REV 0x10 is not supported*/
if (data->rev == 0x10) {
/* MCA MSR protocol for REV 0x20 is supported*/
if (data->rev != 0x20) {
ret = -EOPNOTSUPP;
goto exit_unlock;
}