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[PATCH] tpm: Pass unknown error as non-fatal, but debug print the error


From: Mathieu Trudel-Lapierre
Subject: [PATCH] tpm: Pass unknown error as non-fatal, but debug print the error we got
Date: Fri, 25 Oct 2019 10:27:54 -0400

Signed-off-by: Mathieu Trudel-Lapierre <address@hidden>
Patch-Name: ubuntu-tpm-unknown-error-non-fatal.patch
---
 grub-core/commands/efi/tpm.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/grub-core/commands/efi/tpm.c b/grub-core/commands/efi/tpm.c
index 32909c192..fdbaaee19 100644
--- a/grub-core/commands/efi/tpm.c
+++ b/grub-core/commands/efi/tpm.c
@@ -155,7 +155,8 @@ grub_tpm1_execute (grub_efi_handle_t tpm_handle,
     case GRUB_EFI_NOT_FOUND:
       return grub_error (GRUB_ERR_UNKNOWN_DEVICE, N_("TPM unavailable"));
     default:
-      return grub_error (GRUB_ERR_UNKNOWN_DEVICE, N_("Unknown TPM error"));
+      grub_dprintf("tpm", "Unknown TPM error: %" PRIdGRUB_SSIZE, status);
+      return 0;
     }
 }
 
@@ -195,7 +196,8 @@ grub_tpm2_execute (grub_efi_handle_t tpm_handle,
     case GRUB_EFI_NOT_FOUND:
       return grub_error (GRUB_ERR_UNKNOWN_DEVICE, N_("TPM unavailable"));
     default:
-      return grub_error (GRUB_ERR_UNKNOWN_DEVICE, N_("Unknown TPM error"));
+      grub_dprintf("tpm", "Unknown TPM error: %" PRIdGRUB_SSIZE, status);
+      return 0;
     }
 }
 
@@ -262,7 +264,8 @@ grub_tpm1_log_event (grub_efi_handle_t tpm_handle, unsigned 
char *buf,
     case GRUB_EFI_NOT_FOUND:
       return grub_error (GRUB_ERR_UNKNOWN_DEVICE, N_("TPM unavailable"));
     default:
-      return grub_error (GRUB_ERR_UNKNOWN_DEVICE, N_("Unknown TPM error"));
+      grub_dprintf("tpm", "Unknown TPM error: %" PRIdGRUB_SSIZE, status);
+      return 0;
     }
 }
 
@@ -312,7 +315,8 @@ grub_tpm2_log_event (grub_efi_handle_t tpm_handle, unsigned 
char *buf,
     case GRUB_EFI_NOT_FOUND:
       return grub_error (GRUB_ERR_UNKNOWN_DEVICE, N_("TPM unavailable"));
     default:
-      return grub_error (GRUB_ERR_UNKNOWN_DEVICE, N_("Unknown TPM error"));
+      grub_dprintf("tpm", "Unknown TPM error: %" PRIdGRUB_SSIZE, status);
+      return 0;
     }
 }
 
-- 
2.20.1




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