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authorDan Carpenter <dan.carpenter@oracle.com>2012-06-27 12:07:58 +0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-06-27 09:08:40 -0300
commitf58d0dee07fe6328f775669eb6aa3a123efad6c2 (patch)
tree1d330e6db0495cbe033d761feb3686a7de790dea
parent38ced28b21efff18fd5e5c98a92830e8f0031cee (diff)
downloadlinux-f58d0dee07fe6328f775669eb6aa3a123efad6c2.tar.bz2
edac i5000, i5400: fix pointer math in i5000_get_mc_regs()
"pvt->ambase" is a u64 datatype. The intent here is to fill the first half in the first call to pci_read_config_dword() and the other half in the second. Unfortunately the pointer math is wrong so we set the wrong data. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r--drivers/edac/i5000_edac.c12
-rw-r--r--drivers/edac/i5400_edac.c12
2 files changed, 18 insertions, 6 deletions
diff --git a/drivers/edac/i5000_edac.c b/drivers/edac/i5000_edac.c
index a5c33df520ac..39c63757c2a1 100644
--- a/drivers/edac/i5000_edac.c
+++ b/drivers/edac/i5000_edac.c
@@ -328,7 +328,13 @@ struct i5000_pvt {
struct pci_dev *branch_1; /* 22.0 */
u16 tolm; /* top of low memory */
- u64 ambase; /* AMB BAR */
+ union {
+ u64 ambase; /* AMB BAR */
+ struct {
+ u32 ambase_bottom;
+ u32 ambase_top;
+ } u __packed;
+ };
u16 mir0, mir1, mir2;
@@ -1131,9 +1137,9 @@ static void i5000_get_mc_regs(struct mem_ctl_info *mci)
pvt = mci->pvt_info;
pci_read_config_dword(pvt->system_address, AMBASE,
- (u32 *) & pvt->ambase);
+ &pvt->u.ambase_bottom);
pci_read_config_dword(pvt->system_address, AMBASE + sizeof(u32),
- ((u32 *) & pvt->ambase) + sizeof(u32));
+ &pvt->u.ambase_top);
maxdimmperch = pvt->maxdimmperch;
maxch = pvt->maxch;
diff --git a/drivers/edac/i5400_edac.c b/drivers/edac/i5400_edac.c
index 50069c62c8d4..277246998b80 100644
--- a/drivers/edac/i5400_edac.c
+++ b/drivers/edac/i5400_edac.c
@@ -327,7 +327,13 @@ struct i5400_pvt {
struct pci_dev *branch_1; /* 22.0 */
u16 tolm; /* top of low memory */
- u64 ambase; /* AMB BAR */
+ union {
+ u64 ambase; /* AMB BAR */
+ struct {
+ u32 ambase_bottom;
+ u32 ambase_top;
+ } u __packed;
+ };
u16 mir0, mir1;
@@ -1055,9 +1061,9 @@ static void i5400_get_mc_regs(struct mem_ctl_info *mci)
pvt = mci->pvt_info;
pci_read_config_dword(pvt->system_address, AMBASE,
- (u32 *) &pvt->ambase);
+ &pvt->u.ambase_bottom);
pci_read_config_dword(pvt->system_address, AMBASE + sizeof(u32),
- ((u32 *) &pvt->ambase) + sizeof(u32));
+ &pvt->u.ambase_top);
maxdimmperch = pvt->maxdimmperch;
maxch = pvt->maxch;