diff options
| author | Seth Jennings <sjenning@redhat.com> | 2015-08-05 13:16:01 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-11-09 14:37:38 -0800 |
| commit | 362e91b58e621e61ebc05c0864b2cf45e91dd6e7 (patch) | |
| tree | 1a0187552d8a0727739413e93b08cea495625c76 | |
| parent | 48f93eaae7ba01f1e751436715cbb586d2abff65 (diff) | |
EDAC, sb_edac: Fix TAD presence check for sbridge_mci_bind_devs()
commit 2900ea609616c2651dec65312beeb2a6e536bc50 upstream.
In commit
7d375bffa524 ("sb_edac: Fix support for systems with two home agents per socket")
NUM_CHANNELS was changed to 8 and the channel space was renumerated to
handle EN, EP, and EX configurations.
The *_mci_bind_devs() functions - except for sbridge_mci_bind_devs() -
got a new device presence check in the form of saw_chan_mask. However,
sbridge_mci_bind_devs() still uses the NUM_CHANNELS for loop.
With the increase in NUM_CHANNELS, this loop fails at index 4 since
SB only has 4 TADs. This results in the following error on SB machines:
EDAC sbridge: Some needed devices are missing
EDAC sbridge: Couldn't find mci handler
EDAC sbridge: Couldn't find mci handle
This patch adapts the saw_chan_mask logic for sbridge_mci_bind_devs() as
well.
After this patch:
EDAC MC0: Giving out device to module sbridge_edac.c controller Sandy Bridge Socket#0: DEV 0000:3f:0e.0 (POLLED)
EDAC MC1: Giving out device to module sbridge_edac.c controller Sandy Bridge Socket#1: DEV 0000:7f:0e.0 (POLLED)
Signed-off-by: Seth Jennings <sjenning@redhat.com>
Acked-by: Aristeu Rozanski <aris@redhat.com>
Acked-by: Tony Luck <tony.luck@intel.com>
Tested-by: Borislav Petkov <bp@suse.de>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1438798561-10180-1-git-send-email-sjenning@redhat.com
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/edac/sb_edac.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c index ca7831168298..91cf71008e11 100644 --- a/drivers/edac/sb_edac.c +++ b/drivers/edac/sb_edac.c @@ -1648,6 +1648,7 @@ static int sbridge_mci_bind_devs(struct mem_ctl_info *mci, { struct sbridge_pvt *pvt = mci->pvt_info; struct pci_dev *pdev; + u8 saw_chan_mask = 0; int i; for (i = 0; i < sbridge_dev->n_devs; i++) { @@ -1681,6 +1682,7 @@ static int sbridge_mci_bind_devs(struct mem_ctl_info *mci, { int id = pdev->device - PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD0; pvt->pci_tad[id] = pdev; + saw_chan_mask |= 1 << id; } break; case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_DDRIO: @@ -1701,10 +1703,8 @@ static int sbridge_mci_bind_devs(struct mem_ctl_info *mci, !pvt-> pci_tad || !pvt->pci_ras || !pvt->pci_ta) goto enodev; - for (i = 0; i < NUM_CHANNELS; i++) { - if (!pvt->pci_tad[i]) - goto enodev; - } + if (saw_chan_mask != 0x0f) + goto enodev; return 0; enodev: |