diff options
Diffstat (limited to 'drivers/acpi')
-rw-r--r-- | drivers/acpi/apei/erst-dbg.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/acpi/apei/erst-dbg.c b/drivers/acpi/apei/erst-dbg.c index 903549df809b..04ab5c9d3ced 100644 --- a/drivers/acpi/apei/erst-dbg.c +++ b/drivers/acpi/apei/erst-dbg.c | |||
@@ -111,8 +111,17 @@ retry_next: | |||
111 | if (rc) | 111 | if (rc) |
112 | goto out; | 112 | goto out; |
113 | /* no more record */ | 113 | /* no more record */ |
114 | if (id == APEI_ERST_INVALID_RECORD_ID) | 114 | if (id == APEI_ERST_INVALID_RECORD_ID) { |
115 | /* | ||
116 | * If the persistent store is empty initially, the function | ||
117 | * 'erst_read' below will return "-ENOENT" value. This causes | ||
118 | * 'retry_next' label is entered again. The returned value | ||
119 | * should be zero indicating the read operation is EOF. | ||
120 | */ | ||
121 | len = 0; | ||
122 | |||
115 | goto out; | 123 | goto out; |
124 | } | ||
116 | retry: | 125 | retry: |
117 | rc = len = erst_read(id, erst_dbg_buf, erst_dbg_buf_len); | 126 | rc = len = erst_read(id, erst_dbg_buf, erst_dbg_buf_len); |
118 | /* The record may be cleared by others, try read next record */ | 127 | /* The record may be cleared by others, try read next record */ |