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ie31200_edac: Allocate mci and map mchbar first 

Check for memory allocation and mchbar mapping failures before
initializing the dimm info tables needlessly.

Signed-off-by: Jason Baron <jbaron@akamai.com>
Suggested-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/ead8f53e699f1ce21c2e17f3cffb4685d4faf72a.1404939455.git.jbaron@akamai.com
Signed-off-by: Borislav Petkov <bp@suse.de>
This commit is contained in:
Jason Baron 2014-07-09 21:13:07 +00:00 committed by Borislav Petkov
parent 7ee40b897d
commit 78fd4d1242
1 changed files with 37 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

79
drivers/edac/ie31200_edac.c
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@ -328,8 +328,7 @@ static void __iomem *ie31200_map_mchbar(struct pci_dev *pdev)
static int ie31200_probe1(struct pci_dev *pdev, int dev_idx)
{
int rc;
int i, j;
int i, j, ret;
struct mem_ctl_info *mci = NULL;
struct edac_mc_layer layers[2];
struct dimm_data dimm_info[IE31200_CHANNELS][IE31200_DIMMS_PER_CHANNEL];
@ -344,9 +343,37 @@ static int ie31200_probe1(struct pci_dev *pdev, int dev_idx)
return -ENODEV;
}
nr_channels = how_many_channels(pdev);
layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
layers[0].size = IE31200_DIMMS;
layers[0].is_virt_csrow = true;
layers[1].type = EDAC_MC_LAYER_CHANNEL;
layers[1].size = nr_channels;
layers[1].is_virt_csrow = false;
mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers,
sizeof(struct ie31200_priv));
if (!mci)
return -ENOMEM;
window = ie31200_map_mchbar(pdev);
if (!window)
return -ENODEV;
if (!window) {
ret = -ENODEV;
goto fail_free;
}
edac_dbg(3, "MC: init mci\n");
mci->pdev = &pdev->dev;
mci->mtype_cap = MEM_FLAG_DDR3;
mci->edac_ctl_cap = EDAC_FLAG_SECDED;
mci->edac_cap = EDAC_FLAG_SECDED;
mci->mod_name = EDAC_MOD_STR;
mci->mod_ver = IE31200_REVISION;
mci->ctl_name = ie31200_devs[dev_idx].ctl_name;
mci->dev_name = pci_name(pdev);
mci->edac_check = ie31200_check;
mci->ctl_page_to_phys = NULL;
priv = mci->pvt_info;
priv->window = window;
/* populate DIMM info */
for (i = 0; i < IE31200_CHANNELS; i++) {
@ -367,38 +394,6 @@ static int ie31200_probe1(struct pci_dev *pdev, int dev_idx)
}
}
nr_channels = how_many_channels(pdev);
layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
layers[0].size = IE31200_DIMMS;
layers[0].is_virt_csrow = true;
layers[1].type = EDAC_MC_LAYER_CHANNEL;
layers[1].size = nr_channels;
layers[1].is_virt_csrow = false;
mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers,
sizeof(struct ie31200_priv));
rc = -ENOMEM;
if (!mci)
goto fail_unmap;
edac_dbg(3, "MC: init mci\n");
mci->pdev = &pdev->dev;
mci->mtype_cap = MEM_FLAG_DDR3;
mci->edac_ctl_cap = EDAC_FLAG_SECDED;
mci->edac_cap = EDAC_FLAG_SECDED;
mci->mod_name = EDAC_MOD_STR;
mci->mod_ver = IE31200_REVISION;
mci->ctl_name = ie31200_devs[dev_idx].ctl_name;
mci->dev_name = pci_name(pdev);
mci->edac_check = ie31200_check;
mci->ctl_page_to_phys = NULL;
priv = mci->pvt_info;
priv->window = window;
/*
* The dram rank boundary (DRB) reg values are boundary addresses
* for each DRAM rank with a granularity of 64MB. DRB regs are
@ -439,23 +434,23 @@ static int ie31200_probe1(struct pci_dev *pdev, int dev_idx)
ie31200_clear_error_info(mci);
rc = -ENODEV;
if (edac_mc_add_mc(mci)) {
edac_dbg(3, "MC: failed edac_mc_add_mc()\n");
goto fail_free;
ret = -ENODEV;
goto fail_unmap;
}
/* get this far and it's successful */
edac_dbg(3, "MC: success\n");
return 0;
fail_free:
if (mci)
edac_mc_free(mci);
fail_unmap:
iounmap(window);
return rc;
fail_free:
edac_mc_free(mci);
return ret;
}
static int ie31200_init_one(struct pci_dev *pdev,