The patch titled
edac: i5100 fix enable ecc hardware
has been removed from the -mm tree. Its filename was
edac-i5100-fix-enable-ecc-hardware.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: edac: i5100 fix enable ecc hardware
From: Arthur Jones <ajones@xxxxxxxxxxxx>
It is possible that the BIOS did not enable ECC at boot time. We check
for that case and fail to load if it is true.
Signed-off-by: Arthur Jones <ajones@xxxxxxxxxxxx>
Signed-off-by: Doug Thompson <dougthompson@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/edac/i5100_edac.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff -puN drivers/edac/i5100_edac.c~edac-i5100-fix-enable-ecc-hardware drivers/edac/i5100_edac.c
--- a/drivers/edac/i5100_edac.c~edac-i5100-fix-enable-ecc-hardware
+++ a/drivers/edac/i5100_edac.c
@@ -24,6 +24,8 @@
/* register addresses and bit field accessors... */
/* device 16, func 1 */
+#define I5100_MC 0x40 /* Memory Control Register */
+#define I5100_MC_ERRDETEN(a) ((a) >> 5 & 1)
#define I5100_MS 0x44 /* Memory Status Register */
#define I5100_SPDDATA 0x48 /* Serial Presence Detect Status Reg */
#define I5100_SPDDATA_RDO(a) ((a) >> 15 & 1)
@@ -688,6 +690,14 @@ static int __devinit i5100_init_one(stru
goto bail;
}
+ /* ECC enabled? */
+ pci_read_config_dword(pdev, I5100_MC, &dw);
+ if (!I5100_MC_ERRDETEN(dw)) {
+ printk(KERN_INFO "i5100_edac: ECC not enabled.\n");
+ ret = -ENODEV;
+ goto bail;
+ }
+
/* figure out how many ranks, from strapped state of 48GB_Mode input */
pci_read_config_dword(pdev, I5100_MS, &dw);
ranksperch = !!(dw & (1 << 8)) * 2 + 4;
_
Patches currently in -mm which might be from ajones@xxxxxxxxxxxx are
origin.patch
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