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linux/drivers/gpu/drm/ttm
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Konrad Rzeszutek Wilk 0e11331579 ttm/dma: Remove the WARN() which is not useful. 
. It was useful during development, but now on a production system
we can get this (if the user forgot to upload the firmware):

[drm] radeon: irq initialized.
[drm] GART: num cpu pages 131072, num gpu pages 131072
[drm] radeon: ib pool ready.
[drm] Loading SUMO Microcode
r600_cp: Failed to load firmware "radeon/SUMO_pfp.bin"
atl1c 0000:03:00.0: version 1.0.1.0-NAPI.213057] [drm:evergreen_startup] *ERROR* Failed to load firmware!
radeon 0000:00:01.0: disabling GPU acceleration
88] radeon 0000:00:01.0: ffff8801bb782400 unpin not necessary
------------[ cut here ]------------
WARNING: at /home/konrad/linux-linus/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c:956 ttm_dma_unpopulate+0x79/0x300 [ttm]()
Hardware name: System Product Name
Modules linked in: e1000e atl1c radeon(+) ahci libahci libata scsi_mod fbcon tileblit font ttm bitblit softcursor drm_kms_helper wmi xen_blkfront xen_netfront fb_sys_fops sysimgblt sysfillrect syscopyarea xenfs xen_privcmd
Pid: 1600, comm: modprobe Not tainted 3.2.0-06100-ge343a89 #1
Call Trace:
 [<ffffffff8108973a>] warn_slowpath_common+0x7a/0xb0
 [<ffffffff81089785>] warn_slowpath_null+0x15/0x20
 [<ffffffffa0060309>] ttm_dma_unpopulate+0x79/0x300 [ttm]
 [<ffffffffa01341c0>] radeon_ttm_tt_unpopulate+0x120/0x130 [radeon]
 [<ffffffffa0056e0c>] ttm_tt_destroy+0x2c/0x70 [ttm]
 [<ffffffffa0057a4e>] ttm_bo_cleanup_memtype_use+0x3e/0x80 [ttm]
 [<ffffffffa00595a1>] ttm_bo_release+0x251/0x280 [ttm]
 [<ffffffffa0059610>] ttm_bo_unref+0x40/0x60 [ttm]
 [<ffffffffa0134d02>] radeon_bo_unref+0x42/0x80 [radeon]
 [<ffffffffa0186dfb>] radeon_sa_bo_manager_fini+0x6b/0x80 [radeon]
 [<ffffffffa0146b8f>] radeon_ib_pool_fini+0x6f/0x90 [radeon]
 [<ffffffffa014be49>] r100_ib_fini+0x19/0x20 [radeon]
 [<ffffffffa017b47e>] evergreen_init+0x1ee/0x2d0 [radeon]

The big WARN() has nothing to do with the culprit - which is that
the firmware was not loaded. So lets remove the WARN() from the TTM DMA code.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-01-13 08:59:47 +00:00
..
Makefile drm/ttm: provide dma aware ttm page pool code V9 2011-12-06 10:39:33 +00:00
ttm_agp_backend.c ttm: fix agp since ttm tt rework 2012-01-06 09:34:03 +00:00
ttm_bo.c Merge tag 'v3.2-rc6' of /home/airlied/devel/kernel/linux-2.6 into drm-core-next 2011-12-20 14:43:53 +00:00
ttm_bo_manager.c drm/ttm: Use private locks for the default bo range manager 2010-11-09 13:33:24 +10:00
ttm_bo_util.c drm/ttm: simplify memory accounting for ttm user v2 2011-12-06 10:40:11 +00:00
ttm_bo_vm.c drm/ttm: introduce callback for ttm_tt populate & unpopulate V4 2011-12-06 10:39:24 +00:00
ttm_execbuf_util.c Revert "drm/ttm: add a way to bo_wait for either the last read or last write" 2011-10-27 18:28:37 +02:00
ttm_lock.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
ttm_memory.c drm/ttm: provide dma aware ttm page pool code V9 2011-12-06 10:39:33 +00:00
ttm_module.c drm: move ttm global code to core drm 2010-08-04 09:46:06 +10:00
ttm_object.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
ttm_page_alloc.c drm/ttm: isolate dma data from ttm_tt V4 2011-12-06 10:40:02 +00:00
ttm_page_alloc_dma.c ttm/dma: Remove the WARN() which is not useful. 2012-01-13 08:59:47 +00:00
ttm_tt.c ttm: fix agp since ttm tt rework 2012-01-06 09:34:03 +00:00