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Some variables is not initialized, which causes compiler prompt there
may be potential harm.
This patch from Conti gives initial value to such variables.
Date May 7, 2015
Signed-off-by: Shawn Xiao <b49994@freescale.com>
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this patch can fix NULL pointer issue in GPU kernel driver with the following log
[<7f240438>] (gckEVENT_AddList+0x0/0x810 [galcore]) from [<7f239ebc>] (gckCOMMAND_Commit+0xf28/0x118c [galcore])
[<7f238f94>] (gckCOMMAND_Commit+0x0/0x118c [galcore]) from [<7f2362dc>] (gckKERNEL_Dispatch+0x120c/0x24e4 [galcore])
[<7f2350d0>] (gckKERNEL_Dispatch+0x0/0x24e4 [galcore]) from [<7f222280>] (drv_ioctl+0x390/0x540 [galcore])
[<7f221ef0>] (drv_ioctl+0x0/0x540 [galcore]) from [<800facd0>] (vfs_ioctl+0x30/0x44)
The false code is at 0x217bc where the 0-pointer happens (r3 = 0)
gcuVIDMEM_NODE_PTR node = (gcuVIDMEM_NODE_PTR)(gcmUINT64_TO_PTR(Record->info.u.FreeVideoMemory.node));
217b8: e5953028 ldr r3, [r5, #40] ; 0x28
if (node->VidMem.memory->object.type == gcvOBJ_VIDMEM)
217bc: e5932000 ldr r2, [r3]
217c0: e5922000 ldr r2, [r2]
217c4: e152000a cmp r2, sl
{
gcmkVERIFY_OK(gckKERNEL_RemoveProcessDB(Event->kernel,
Date: Apr 23, 2014
Signed-off-by: Xianzhong <b07117@freescale.com>
Acked-by: Jason Liu
(cherry picked from commit fcde214d8c793d4dd785e47175b5833f1f3f5f1f)
(cherry picked from commit 952142648d76fce2663ef649d9f988f1b7809815)
(cherry picked from commit 9d7b33678f1f944f75644e958c3ceeb7f2e4bac9)
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-Most vg memory must requires reserved memory, when reserved memory is
used up by 3d appliction. vg hardware can't be constructed successfully,
which cause whole context creation failure(including 3d context).
-Allow allocating vg memory from small block reserved memory can help such
multi context cases.
Date: Jan 15, 2014
Signed-off-by: Loren Huang <b02279@freescale.com>
Acked-by: Shawn Guo
(cherry picked from commit 5d7c8c1c695b79f7372de16504292a1241390a8b)
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There are two possible reasons to cause AXI bus error
1.Allocate Tile status buffer from virtual memory. It seems gc2000
and gc880 doesn't support tile status buffer from virtual memory.
2.Stream buffer using very beginning gpu mmu address. In this condition,
a faked non gpu mmu address maybe generated and fill into gpu which cause
AXI bus error.
[DATE]09-01-2014
Signed-off-by: Loren Huang <b02279@freescale.com>
Acked-by: Shawn Guo
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The root cause is kernelVirtual is not initialized which
may cause incorrect kernel virtual address for vg.
[DATE]16-12-2013
Signed-off-by: Loren Huang <b02279@freescale.com>
Acked-by: Shawn Guo
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When application is using virtual memory, ctrl+c it will have
kernel panic caused by null pointer.
The reason is hardware struture already is freed when driver wants
to use it.
[DATE]16-12-2013
Signed-off-by: Loren Huang <b02279@freescale.com>
Acked-by: Shawn Guo
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Integrated 4.6.9p13 kernel part change.
Signed-off-by: Loren HUANG <b02279@freescale.com>
Acked-by: Shawn Guo
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This is a direct copy of folder drivers/mxc/gpu-viv from 3.5.7 kernel.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
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