EDAC/{sb,i7core}_edac: Do not use a plain integer for a NULL pointer

Sparse warns about the use of the integer constant 0 as a NULL pointer
with the -Wnon-pointer-null switch.

Even though the C standard requires that 0 == NULL and type conversion
rules turn an integer constant 0 into a NULL pointer when cast to a void
* type, Linus notes that this is a very poor situation from a type
safety angle and a pointer should be initialized with a pointer type
- not an integer constant.

See https://www.spinics.net/lists/linux-sparse/msg10066.html for more
info.

[ bp: Rewrite commit message, drop useless comments in the code. ]

Signed-off-by: Abhinav Singh <[e-mail]>
Signed-off-by: Borislav Petkov (AMD) <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/edac/i7core_edac.c

···
 	PCI_ID_TABLE_ENTRY(pci_dev_descr_i7core_nehalem),
 	PCI_ID_TABLE_ENTRY(pci_dev_descr_lynnfield),
 	PCI_ID_TABLE_ENTRY(pci_dev_descr_i7core_westmere),
-	{0,}			/* 0 terminated list. */
+	{ NULL, }
 };
 
 /*
···
 static const struct pci_device_id i7core_pci_tbl[] = {
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_X58_HUB_MGMT)},
 	{PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LYNNFIELD_QPI_LINK0)},
-	{0,}			/* 0 terminated list. */
+	{ 0, }
 };
 
 /****************************************************************************

drivers/edac/sb_edac.c

···
 
 static const struct pci_id_table pci_dev_descr_sbridge_table[] = {
 	PCI_ID_TABLE_ENTRY(pci_dev_descr_sbridge, ARRAY_SIZE(pci_dev_descr_sbridge), 1, SANDY_BRIDGE),
-	{0,}			/* 0 terminated list. */
+	{ NULL, }
 };
 
 /* This changes depending if 1HA or 2HA:
···
 
 static const struct pci_id_table pci_dev_descr_ibridge_table[] = {
 	PCI_ID_TABLE_ENTRY(pci_dev_descr_ibridge, 12, 2, IVY_BRIDGE),
-	{0,}			/* 0 terminated list. */
+	{ NULL, }
 };
 
 /* Haswell support */
···
 
 static const struct pci_id_table pci_dev_descr_haswell_table[] = {
 	PCI_ID_TABLE_ENTRY(pci_dev_descr_haswell, 13, 2, HASWELL),
-	{0,}			/* 0 terminated list. */
+	{ NULL, }
 };
 
 /* Knight's Landing Support */
···
 
 static const struct pci_id_table pci_dev_descr_knl_table[] = {
 	PCI_ID_TABLE_ENTRY(pci_dev_descr_knl, ARRAY_SIZE(pci_dev_descr_knl), 1, KNIGHTS_LANDING),
-	{0,}
+	{ NULL, }
 };
 
 /*
···
 
 static const struct pci_id_table pci_dev_descr_broadwell_table[] = {
 	PCI_ID_TABLE_ENTRY(pci_dev_descr_broadwell, 10, 2, BROADWELL),
-	{0,}			/* 0 terminated list. */
+	{ NULL, }
 };