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authorScott Thompson <postfail at hushmail.com>2007-08-25 18:14:00 +1000
committerDave Airlie <airlied@linux.ie>2007-08-25 18:14:00 +1000
commit5bdbc7dc2c07d507b41bffdadc2c8cc13b2d4326 (patch)
tree028f10ec31f041f97934c3fd6b66eabb81444ed8 /drivers/char
parent32ddef98f232585f20bc8bdb891029a6a5f633d0 (diff)
agp: balance ioremap checks
patchset against 2.6.23-rc3. corrects missing ioremap return checks and balancing on iounmap calls, integrated changes per list recommendations on the original set of patches.. Signed-off-by: Scott Thompson <postfail <at> hushmail.com> Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/agp/amd-k7-agp.c2
-rw-r--r--drivers/char/agp/ati-agp.c3
-rw-r--r--drivers/char/agp/hp-agp.c1
-rw-r--r--drivers/char/agp/i460-agp.c4
-rw-r--r--drivers/char/agp/intel-agp.c14
-rw-r--r--drivers/char/agp/nvidia-agp.c3
6 files changed, 22 insertions, 5 deletions
diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c
index df0ddf14b85c..f60bca70d1fb 100644
--- a/drivers/char/agp/amd-k7-agp.c
+++ b/drivers/char/agp/amd-k7-agp.c
@@ -223,6 +223,8 @@ static int amd_irongate_configure(void)
pci_read_config_dword(agp_bridge->dev, AMD_MMBASE, &temp);
temp = (temp & PCI_BASE_ADDRESS_MEM_MASK);
amd_irongate_private.registers = (volatile u8 __iomem *) ioremap(temp, 4096);
+ if (!amd_irongate_private.registers)
+ return -ENOMEM;
/* Write out the address of the gatt table */
writel(agp_bridge->gatt_bus_addr, amd_irongate_private.registers+AMD_ATTBASE);
diff --git a/drivers/char/agp/ati-agp.c b/drivers/char/agp/ati-agp.c
index da7513d7b4e7..2d46b713c8f2 100644
--- a/drivers/char/agp/ati-agp.c
+++ b/drivers/char/agp/ati-agp.c
@@ -213,6 +213,9 @@ static int ati_configure(void)
temp = (temp & 0xfffff000);
ati_generic_private.registers = (volatile u8 __iomem *) ioremap(temp, 4096);
+ if (!ati_generic_private.registers)
+ return -ENOMEM;
+
if (is_r200())
pci_write_config_dword(agp_bridge->dev, ATI_RS100_IG_AGPMODE, 0x20000);
else
diff --git a/drivers/char/agp/hp-agp.c b/drivers/char/agp/hp-agp.c
index bcdb149c8179..313a133a1172 100644
--- a/drivers/char/agp/hp-agp.c
+++ b/drivers/char/agp/hp-agp.c
@@ -221,6 +221,7 @@ hp_zx1_lba_init (u64 hpa)
if (cap != PCI_CAP_ID_AGP) {
printk(KERN_ERR PFX "Invalid capability ID 0x%02x at 0x%x\n",
cap, hp->lba_cap_offset);
+ iounmap(hp->lba_regs);
return -ENODEV;
}
diff --git a/drivers/char/agp/i460-agp.c b/drivers/char/agp/i460-agp.c
index 53354bf83af7..75d2aca6353d 100644
--- a/drivers/char/agp/i460-agp.c
+++ b/drivers/char/agp/i460-agp.c
@@ -249,6 +249,10 @@ static int i460_create_gatt_table (struct agp_bridge_data *bridge)
num_entries = A_SIZE_8(temp)->num_entries;
i460.gatt = ioremap(INTEL_I460_ATTBASE, PAGE_SIZE << page_order);
+ if (!i460.gatt) {
+ printk(KERN_ERR PFX "ioremap failed\n");
+ return -ENOMEM;
+ }
/* These are no good, the should be removed from the agp_bridge strucure... */
agp_bridge->gatt_table_real = NULL;
diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index 294cdbf4d44d..2c9ca2c64628 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -930,8 +930,10 @@ static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge)
temp &= 0xfff80000;
intel_private.registers = ioremap(temp,128 * 4096);
- if (!intel_private.registers)
+ if (!intel_private.registers) {
+ iounmap(intel_private.gtt);
return -ENOMEM;
+ }
temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000;
global_cache_flush(); /* FIXME: ? */
@@ -985,13 +987,15 @@ static int intel_i965_create_gatt_table(struct agp_bridge_data *bridge)
temp &= 0xfff00000;
intel_private.gtt = ioremap((temp + (512 * 1024)) , 512 * 1024);
- if (!intel_private.gtt)
- return -ENOMEM;
+ if (!intel_private.gtt)
+ return -ENOMEM;
intel_private.registers = ioremap(temp,128 * 4096);
- if (!intel_private.registers)
- return -ENOMEM;
+ if (!intel_private.registers) {
+ iounmap(intel_private.gtt);
+ return -ENOMEM;
+ }
temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000;
global_cache_flush(); /* FIXME: ? */
diff --git a/drivers/char/agp/nvidia-agp.c b/drivers/char/agp/nvidia-agp.c
index 6cd7373dcdf4..225ed2a53d45 100644
--- a/drivers/char/agp/nvidia-agp.c
+++ b/drivers/char/agp/nvidia-agp.c
@@ -157,6 +157,9 @@ static int nvidia_configure(void)
nvidia_private.aperture =
(volatile u32 __iomem *) ioremap(apbase, 33 * PAGE_SIZE);
+ if (!nvidia_private.aperture)
+ return -ENOMEM;
+
return 0;
}