From ca7cc5110a313a609da40ae948978a585352564b Mon Sep 17 00:00:00 2001 From: Huang Ying Date: Wed, 13 Jul 2011 13:14:13 +0800 Subject: ACPI, APEI, ERST, Prevent erst_dbg from loading if ERST is disabled erst_dbg module can not work when ERST is disabled. So disable module loading to provide clearer information to user. Signed-off-by: Huang Ying Signed-off-by: Len Brown --- drivers/acpi/apei/erst-dbg.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/acpi/apei/erst-dbg.c') diff --git a/drivers/acpi/apei/erst-dbg.c b/drivers/acpi/apei/erst-dbg.c index a4cfb64c86a..cb04aa43c33 100644 --- a/drivers/acpi/apei/erst-dbg.c +++ b/drivers/acpi/apei/erst-dbg.c @@ -213,6 +213,10 @@ static struct miscdevice erst_dbg_dev = { static __init int erst_dbg_init(void) { + if (erst_disable) { + pr_info(ERST_DBG_PFX "ERST support is disabled.\n"); + return -ENODEV; + } return misc_register(&erst_dbg_dev); } -- cgit v1.2.3-70-g09d2 From d37afc50e618271839f001ea653949eefc728167 Mon Sep 17 00:00:00 2001 From: Chen Gong Date: Wed, 13 Jul 2011 13:14:14 +0800 Subject: ACPI, APEI, ERST, Fix erst-dbg long record reading issue When we debug ERST table with erst-dbg, if the error record in ERST table is too long(>4K), it can't be read out. So this patch increases the buffer size to 16K to ensure such error records can be read from ERST table. Signed-off-by: Chen Gong Signed-off-by: Huang Ying Signed-off-by: Len Brown --- drivers/acpi/apei/erst-dbg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/acpi/apei/erst-dbg.c') diff --git a/drivers/acpi/apei/erst-dbg.c b/drivers/acpi/apei/erst-dbg.c index cb04aa43c33..903549df809 100644 --- a/drivers/acpi/apei/erst-dbg.c +++ b/drivers/acpi/apei/erst-dbg.c @@ -33,7 +33,7 @@ #define ERST_DBG_PFX "ERST DBG: " -#define ERST_DBG_RECORD_LEN_MAX 4096 +#define ERST_DBG_RECORD_LEN_MAX 0x4000 static void *erst_dbg_buf; static unsigned int erst_dbg_buf_len; -- cgit v1.2.3-70-g09d2