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authorAristeu Rozanski <aris@redhat.com>2014-06-02 15:15:25 -0300
committerMauro Carvalho Chehab <m.chehab@samsung.com>2014-06-26 15:46:33 -0300
commitdbc954ddddaaff0183a21dbd736ec10ca01e9f1a (patch)
treef99933db1111f770e98b044a94990c353f2251ec /drivers/edac
parentb976bcf249f4d3b28963e67b5194bc2690da260c (diff)
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sb_edac: search devices using product id
This patch changes the way devices are searched by using product id instead of device/function numbers. Tested in a Sandy Bridge and a Ivy Bridge machine to make sure everything works properly. Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: Aristeu Rozanski <aris@redhat.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/edac')
-rw-r--r--drivers/edac/sb_edac.c352
1 files changed, 137 insertions, 215 deletions
diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index c99c595adc2b..3411f502a374 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -311,8 +311,6 @@ struct sbridge_channel {
};
struct pci_id_descr {
- int dev;
- int func;
int dev_id;
int optional;
};
@@ -360,31 +358,29 @@ struct sbridge_pvt {
u64 tolm, tohm;
};
-#define PCI_DESCR(device, function, device_id, opt) \
- .dev = (device), \
- .func = (function), \
- .dev_id = (device_id), \
+#define PCI_DESCR(device_id, opt) \
+ .dev_id = (device_id), \
.optional = opt
static const struct pci_id_descr pci_dev_descr_sbridge[] = {
/* Processor Home Agent */
- { PCI_DESCR(14, 0, PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_HA0, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_HA0, 0) },
/* Memory controller */
- { PCI_DESCR(15, 0, PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TA, 0) },
- { PCI_DESCR(15, 1, PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_RAS, 0) },
- { PCI_DESCR(15, 2, PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD0, 0) },
- { PCI_DESCR(15, 3, PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD1, 0) },
- { PCI_DESCR(15, 4, PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD2, 0) },
- { PCI_DESCR(15, 5, PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD3, 0) },
- { PCI_DESCR(17, 0, PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_DDRIO, 1) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TA, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_RAS, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD0, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD1, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD2, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD3, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_DDRIO, 1) },
/* System Address Decoder */
- { PCI_DESCR(12, 6, PCI_DEVICE_ID_INTEL_SBRIDGE_SAD0, 0) },
- { PCI_DESCR(12, 7, PCI_DEVICE_ID_INTEL_SBRIDGE_SAD1, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_SAD0, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_SAD1, 0) },
/* Broadcast Registers */
- { PCI_DESCR(13, 6, PCI_DEVICE_ID_INTEL_SBRIDGE_BR, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_BR, 0) },
};
#define PCI_ID_TABLE_ENTRY(A) { .descr=A, .n_devs = ARRAY_SIZE(A) }
@@ -421,34 +417,34 @@ static const struct pci_id_table pci_dev_descr_sbridge_table[] = {
static const struct pci_id_descr pci_dev_descr_ibridge[] = {
/* Processor Home Agent */
- { PCI_DESCR(14, 0, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0, 0) },
/* Memory controller */
- { PCI_DESCR(15, 0, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA, 0) },
- { PCI_DESCR(15, 1, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_RAS, 0) },
- { PCI_DESCR(15, 2, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD0, 0) },
- { PCI_DESCR(15, 3, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD1, 0) },
- { PCI_DESCR(15, 4, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD2, 0) },
- { PCI_DESCR(15, 5, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD3, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_RAS, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD0, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD1, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD2, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD3, 0) },
/* System Address Decoder */
- { PCI_DESCR(22, 0, PCI_DEVICE_ID_INTEL_IBRIDGE_SAD, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_SAD, 0) },
/* Broadcast Registers */
- { PCI_DESCR(22, 1, PCI_DEVICE_ID_INTEL_IBRIDGE_BR0, 1) },
- { PCI_DESCR(22, 2, PCI_DEVICE_ID_INTEL_IBRIDGE_BR1, 0) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_BR0, 1) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_BR1, 0) },
/* Optional, mode 2HA */
- { PCI_DESCR(28, 0, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1, 1) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1, 1) },
#if 0
- { PCI_DESCR(29, 0, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TA, 1) },
- { PCI_DESCR(29, 1, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_RAS, 1) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TA, 1) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_RAS, 1) },
#endif
- { PCI_DESCR(29, 2, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD0, 1) },
- { PCI_DESCR(29, 3, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD1, 1) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD0, 1) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD1, 1) },
- { PCI_DESCR(17, 0, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_1HA_DDRIO0, 1) },
- { PCI_DESCR(17, 4, PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_2HA_DDRIO0, 1) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_1HA_DDRIO0, 1) },
+ { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_2HA_DDRIO0, 1) },
};
static const struct pci_id_table pci_dev_descr_ibridge_table[] = {
@@ -631,44 +627,38 @@ static inline u8 sad_pkg_ha(u8 pkg)
/****************************************************************************
Memory check routines
****************************************************************************/
-static struct pci_dev *get_pdev_slot_func(u8 bus, unsigned slot,
- unsigned func)
+static struct pci_dev *get_pdev_same_bus(u8 bus, u32 id)
{
- struct sbridge_dev *sbridge_dev = get_sbridge_dev(bus);
- int i;
-
- if (!sbridge_dev)
- return NULL;
-
- for (i = 0; i < sbridge_dev->n_devs; i++) {
- if (!sbridge_dev->pdev[i])
- continue;
+ struct pci_dev *pdev = NULL;
- if (PCI_SLOT(sbridge_dev->pdev[i]->devfn) == slot &&
- PCI_FUNC(sbridge_dev->pdev[i]->devfn) == func) {
- edac_dbg(1, "Associated %02x.%02x.%d with %p\n",
- bus, slot, func, sbridge_dev->pdev[i]);
- return sbridge_dev->pdev[i];
- }
- }
+ do {
+ pdev = pci_get_device(PCI_VENDOR_ID_INTEL, id, pdev);
+ if (pdev && pdev->bus->number == bus)
+ break;
+ } while (pdev);
- return NULL;
+ return pdev;
}
/**
* check_if_ecc_is_active() - Checks if ECC is active
* bus: Device bus
*/
-static int check_if_ecc_is_active(const u8 bus)
+static int check_if_ecc_is_active(const u8 bus, enum type type)
{
struct pci_dev *pdev = NULL;
- u32 mcmtr;
+ u32 mcmtr, id;
- pdev = get_pdev_slot_func(bus, 15, 0);
+ if (type == IVY_BRIDGE)
+ id = PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA;
+ else
+ id = PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TA;
+
+ pdev = get_pdev_same_bus(bus, id);
if (!pdev) {
sbridge_printk(KERN_ERR, "Couldn't find PCI device "
- "%2x.%02d.%d!!!\n",
- bus, 15, 0);
+ "%04x:%04x! on bus %02d\n",
+ PCI_VENDOR_ID_INTEL, id, bus);
return -ENODEV;
}
@@ -1279,13 +1269,11 @@ static int sbridge_get_onedevice(struct pci_dev **prev,
{
struct sbridge_dev *sbridge_dev;
const struct pci_id_descr *dev_descr = &table->descr[devno];
-
struct pci_dev *pdev = NULL;
u8 bus = 0;
sbridge_printk(KERN_DEBUG,
- "Seeking for: dev %02x.%d PCI ID %04x:%04x\n",
- dev_descr->dev, dev_descr->func,
+ "Seeking for: PCI ID %04x:%04x\n",
PCI_VENDOR_ID_INTEL, dev_descr->dev_id);
pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
@@ -1300,12 +1288,12 @@ static int sbridge_get_onedevice(struct pci_dev **prev,
if (dev_descr->optional)
return 0;
+ /* if the HA wasn't found */
if (devno == 0)
return -ENODEV;
sbridge_printk(KERN_INFO,
- "Device not found: dev %02x.%d PCI ID %04x:%04x\n",
- dev_descr->dev, dev_descr->func,
+ "Device not found: %04x:%04x\n",
PCI_VENDOR_ID_INTEL, dev_descr->dev_id);
/* End of list, leave */
@@ -1325,9 +1313,7 @@ static int sbridge_get_onedevice(struct pci_dev **prev,
if (sbridge_dev->pdev[devno]) {
sbridge_printk(KERN_ERR,
- "Duplicated device for "
- "dev %02x:%d.%d PCI ID %04x:%04x\n",
- bus, dev_descr->dev, dev_descr->func,
+ "Duplicated device for %04x:%04x\n",
PCI_VENDOR_ID_INTEL, dev_descr->dev_id);
pci_dev_put(pdev);
return -ENODEV;
@@ -1335,30 +1321,15 @@ static int sbridge_get_onedevice(struct pci_dev **prev,
sbridge_dev->pdev[devno] = pdev;
- /* Sanity check */
- if (unlikely(PCI_SLOT(pdev->devfn) != dev_descr->dev ||
- PCI_FUNC(pdev->devfn) != dev_descr->func)) {
- sbridge_printk(KERN_ERR,
- "Device PCI ID %04x:%04x "
- "has dev %02x:%d.%d instead of dev %02x:%02x.%d\n",
- PCI_VENDOR_ID_INTEL, dev_descr->dev_id,
- bus, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
- bus, dev_descr->dev, dev_descr->func);
- return -ENODEV;
- }
-
/* Be sure that the device is enabled */
if (unlikely(pci_enable_device(pdev) < 0)) {
sbridge_printk(KERN_ERR,
- "Couldn't enable "
- "dev %02x:%d.%d PCI ID %04x:%04x\n",
- bus, dev_descr->dev, dev_descr->func,
+ "Couldn't enable %04x:%04x\n",
PCI_VENDOR_ID_INTEL, dev_descr->dev_id);
return -ENODEV;
}
- edac_dbg(0, "Detected dev %02x:%d.%d PCI ID %04x:%04x\n",
- bus, dev_descr->dev, dev_descr->func,
+ edac_dbg(0, "Detected %04x:%04x\n",
PCI_VENDOR_ID_INTEL, dev_descr->dev_id);
/*
@@ -1375,8 +1346,7 @@ static int sbridge_get_onedevice(struct pci_dev **prev,
/*
* sbridge_get_all_devices - Find and perform 'get' operation on the MCH's
- * device/functions we want to reference for this driver.
- * Need to 'get' device 16 func 1 and func 2.
+ * devices we want to reference for this driver.
* @num_mc: pointer to the memory controllers count, to be incremented in case
* of success.
* @table: model specific table
@@ -1416,79 +1386,51 @@ static int sbridge_mci_bind_devs(struct mem_ctl_info *mci,
{
struct sbridge_pvt *pvt = mci->pvt_info;
struct pci_dev *pdev;
- int i, func, slot;
+ int i;
for (i = 0; i < sbridge_dev->n_devs; i++) {
pdev = sbridge_dev->pdev[i];
if (!pdev)
continue;
- slot = PCI_SLOT(pdev->devfn);
- func = PCI_FUNC(pdev->devfn);
- switch (slot) {
- case 12:
- switch (func) {
- case 6:
- pvt->pci_sad0 = pdev;
- break;
- case 7:
- pvt->pci_sad1 = pdev;
- break;
- default:
- goto error;
- }
+
+ switch (pdev->device) {
+ case PCI_DEVICE_ID_INTEL_SBRIDGE_SAD0:
+ pvt->pci_sad0 = pdev;
break;
- case 13:
- switch (func) {
- case 6:
- pvt->pci_br0 = pdev;
- break;
- default:
- goto error;
- }
+ case PCI_DEVICE_ID_INTEL_SBRIDGE_SAD1:
+ pvt->pci_sad1 = pdev;
break;
- case 14:
- switch (func) {
- case 0:
- pvt->pci_ha0 = pdev;
- break;
- default:
- goto error;
- }
+ case PCI_DEVICE_ID_INTEL_SBRIDGE_BR:
+ pvt->pci_br0 = pdev;
break;
- case 15:
- switch (func) {
- case 0:
- pvt->pci_ta = pdev;
- break;
- case 1:
- pvt->pci_ras = pdev;
- break;
- case 2:
- case 3:
- case 4:
- case 5:
- pvt->pci_tad[func - 2] = pdev;
- break;
- default:
- goto error;
- }
+ case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_HA0:
+ pvt->pci_ha0 = pdev;
break;
- case 17:
- switch (func) {
- case 0:
- pvt->pci_ddrio = pdev;
- break;
- default:
- goto error;
- }
+ case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TA:
+ pvt->pci_ta = pdev;
+ break;
+ case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_RAS:
+ pvt->pci_ras = pdev;
+ break;
+ case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD0:
+ case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD1:
+ case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD2:
+ case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD3:
+ {
+ int id = pdev->device - PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD0;
+ pvt->pci_tad[id] = pdev;
+ }
+ break;
+ case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_DDRIO:
+ pvt->pci_ddrio = pdev;
break;
default:
goto error;
}
- edac_dbg(0, "Associated PCI %02x.%02d.%d with dev = %p\n",
+ edac_dbg(0, "Associated PCI %02x:%02x, bus %d with dev = %p\n",
+ pdev->vendor, pdev->device,
sbridge_dev->bus,
- PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
pdev);
}
@@ -1508,9 +1450,8 @@ enodev:
return -ENODEV;
error:
- sbridge_printk(KERN_ERR, "Device %d, function %d "
- "is out of the expected range\n",
- slot, func);
+ sbridge_printk(KERN_ERR, "Unexpected device %02x:%02x\n",
+ PCI_VENDOR_ID_INTEL, pdev->device);
return -EINVAL;
}
@@ -1519,7 +1460,7 @@ static int ibridge_mci_bind_devs(struct mem_ctl_info *mci,
{
struct sbridge_pvt *pvt = mci->pvt_info;
struct pci_dev *pdev, *tmp;
- int i, func, slot;
+ int i;
bool mode_2ha = false;
tmp = pci_get_device(PCI_VENDOR_ID_INTEL,
@@ -1533,79 +1474,60 @@ static int ibridge_mci_bind_devs(struct mem_ctl_info *mci,
pdev = sbridge_dev->pdev[i];
if (!pdev)
continue;
- slot = PCI_SLOT(pdev->devfn);
- func = PCI_FUNC(pdev->devfn);
- switch (slot) {
- case 14:
- if (func == 0) {
- pvt->pci_ha0 = pdev;
- break;
- }
- goto error;
- case 15:
- switch (func) {
- case 0:
- pvt->pci_ta = pdev;
- break;
- case 1:
- pvt->pci_ras = pdev;
- break;
- case 4:
- case 5:
- /* if we have 2 HAs active, channels 2 and 3
- * are in other device */
- if (mode_2ha)
- break;
- /* fall through */
- case 2:
- case 3:
- pvt->pci_tad[func - 2] = pdev;
+ switch (pdev->device) {
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0:
+ pvt->pci_ha0 = pdev;
+ break;
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA:
+ pvt->pci_ta = pdev;
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_RAS:
+ pvt->pci_ras = pdev;
+ break;
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD2:
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD3:
+ /* if we have 2 HAs active, channels 2 and 3
+ * are in other device */
+ if (mode_2ha)
break;
- default:
- goto error;
- }
+ /* fall through */
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD0:
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD1:
+ {
+ int id = pdev->device - PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD0;
+ pvt->pci_tad[id] = pdev;
+ }
break;
- case 17:
- if (func == 4) {
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_2HA_DDRIO0:
+ pvt->pci_ddrio = pdev;
+ break;
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_1HA_DDRIO0:
+ if (!mode_2ha)
pvt->pci_ddrio = pdev;
- break;
- } else if (func == 0) {
- if (!mode_2ha)
- pvt->pci_ddrio = pdev;
- break;
- }
- goto error;
- case 22:
- switch (func) {
- case 0:
- pvt->pci_sad0 = pdev;
- break;
- case 1:
- pvt->pci_br0 = pdev;
- break;
- case 2:
- pvt->pci_br1 = pdev;
- break;
- default:
- goto error;
- }
break;
- case 28:
- if (func == 0) {
- pvt->pci_ha1 = pdev;
- break;
- }
- goto error;
- case 29:
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_SAD:
+ pvt->pci_sad0 = pdev;
+ break;
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_BR0:
+ pvt->pci_br0 = pdev;
+ break;
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_BR1:
+ pvt->pci_br1 = pdev;
+ break;
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1:
+ pvt->pci_ha1 = pdev;
+ break;
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD0:
+ case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD1:
+ {
+ int id = pdev->device - PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD0 + 2;
+
/* we shouldn't have this device if we have just one
* HA present */
WARN_ON(!mode_2ha);
- if (func == 2 || func == 3) {
- pvt->pci_tad[func] = pdev;
- break;
- }
- goto error;
+ pvt->pci_tad[id] = pdev;
+ }
+ break;
default:
goto error;
}
@@ -1634,8 +1556,8 @@ enodev:
error:
sbridge_printk(KERN_ERR,
- "Device %d, function %d is out of the expected range\n",
- slot, func);
+ "Unexpected device %02x:%02x\n", PCI_VENDOR_ID_INTEL,
+ pdev->device);
return -EINVAL;
}
@@ -1952,7 +1874,7 @@ static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type)
int rc;
/* Check the number of active and not disabled channels */
- rc = check_if_ecc_is_active(sbridge_dev->bus);
+ rc = check_if_ecc_is_active(sbridge_dev->bus, type);
if (unlikely(rc < 0))
return rc;