diff options
| author | Ondrej Zary <linux@rainbow-software.org> | 2010-06-16 10:13:52 +0200 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2010-08-01 19:03:42 -0700 |
| commit | 8699be3ef1d71d1c5e11eee239f53573d72515a3 (patch) | |
| tree | bf099cadccc715115b7e7b9f83a58a337a544dc9 | |
| parent | 43b27f40ebc40758a4acad03ea9fa717ba65d76e (diff) | |
intel_agp: Don't oops with zero stolen memory
When "onboard video memory" is set do "disabled" in BIOS on Asus P4P800-VM
board (i865G), kernel oopses with memory corruption:
https://bugs.freedesktop.org/show_bug.cgi?id=28430
Fix that by cleanly aborting the initialization.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
| -rw-r--r-- | drivers/char/agp/intel-gtt.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c index 9344216183a4..f97122a53ca3 100644 --- a/drivers/char/agp/intel-gtt.c +++ b/drivers/char/agp/intel-gtt.c @@ -797,6 +797,10 @@ static int intel_i830_create_gatt_table(struct agp_bridge_data *bridge) /* we have to call this as early as possible after the MMIO base address is known */ intel_i830_init_gtt_entries(); + if (intel_private.gtt_entries == 0) { + iounmap(intel_private.registers); + return -ENOMEM; + } agp_bridge->gatt_table = NULL; @@ -1279,6 +1283,11 @@ static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge) /* we have to call this as early as possible after the MMIO base address is known */ intel_i830_init_gtt_entries(); + if (intel_private.gtt_entries == 0) { + iounmap(intel_private.gtt); + iounmap(intel_private.registers); + return -ENOMEM; + } agp_bridge->gatt_table = NULL; @@ -1387,6 +1396,11 @@ static int intel_i965_create_gatt_table(struct agp_bridge_data *bridge) /* we have to call this as early as possible after the MMIO base address is known */ intel_i830_init_gtt_entries(); + if (intel_private.gtt_entries == 0) { + iounmap(intel_private.gtt); + iounmap(intel_private.registers); + return -ENOMEM; + } agp_bridge->gatt_table = NULL; |