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List: linux-edac
Subject: [PATCH] i7300_edac: Fix error flag testing
From: Jean Delvare <jdelvare () suse ! de>
Date: 2012-11-12 14:40:36
Message-ID: 1352731236.4323.9.camel () amber ! site
[Download RAW message or body]
* Right-shift the values in GET_FBD_FAT_IDX and GET_FBD_NF_IDX, so
that the callers get the result they expect.
* Fix definition of FERR_FAT_FBD_ERR_MASK.
* Call GET_FBD_NF_IDX, not GET_FBD_FAT_IDX, when operating on
register FERR_NF_FBD. We were lucky they have the same definition.
This fixes kernel bug #44131:
https://bugzilla.kernel.org/show_bug.cgi?id=44131
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: stable@vger.kernel.org
---
Already sent on: 2012-10-18
Notes:
* I do not have the hardware, so I'd like someone who does to test
this fix, especially if it goes to stable.
* I'm not sure if this fix is sufficient. The datasheet says that the
meaning of FBDChan_Indx depends on which error happened, but the
driver always treats it as a branch value.
drivers/edac/i7300_edac.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- linux-3.7-rc5.orig/drivers/edac/i7300_edac.c 2012-11-12 09:28:34.213653152 +0100
+++ linux-3.7-rc5/drivers/edac/i7300_edac.c 2012-11-12 14:19:07.267570640 +0100
@@ -197,8 +197,8 @@ static const char *ferr_fat_fbd_name[] =
[0] = "Memory Write error on non-redundant retry or "
"FBD configuration Write error on retry",
};
-#define GET_FBD_FAT_IDX(fbderr) (fbderr & (3 << 28))
-#define FERR_FAT_FBD_ERR_MASK ((1 << 0) | (1 << 1) | (1 << 2) | (1 << 3))
+#define GET_FBD_FAT_IDX(fbderr) (((fbderr) >> 28) & 3)
+#define FERR_FAT_FBD_ERR_MASK ((1 << 0) | (1 << 1) | (1 << 2) | (1 << 22))
#define FERR_NF_FBD 0xa0
static const char *ferr_nf_fbd_name[] = {
@@ -225,7 +225,7 @@ static const char *ferr_nf_fbd_name[] =
[1] = "Aliased Uncorrectable Non-Mirrored Demand Data ECC",
[0] = "Uncorrectable Data ECC on Replay",
};
-#define GET_FBD_NF_IDX(fbderr) (fbderr & (3 << 28))
+#define GET_FBD_NF_IDX(fbderr) (((fbderr) >> 28) & 3)
#define FERR_NF_FBD_ERR_MASK ((1 << 24) | (1 << 23) | (1 << 22) | (1 << 21) |\
(1 << 18) | (1 << 17) | (1 << 16) | (1 << 15) |\
(1 << 14) | (1 << 13) | (1 << 11) | (1 << 10) |\
@@ -464,7 +464,7 @@ static void i7300_process_fbd_error(stru
errnum = find_first_bit(&errors,
ARRAY_SIZE(ferr_nf_fbd_name));
specific = GET_ERR_FROM_TABLE(ferr_nf_fbd_name, errnum);
- branch = (GET_FBD_FAT_IDX(error_reg) == 2) ? 1 : 0;
+ branch = (GET_FBD_NF_IDX(error_reg) == 2) ? 1 : 0;
pci_read_config_dword(pvt->pci_dev_16_1_fsb_addr_map,
REDMEMA, &syndrome);
--
Jean Delvare
Suse L3
--
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