[Bug 40952] New: R100 firmware no longer loads

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=40952

           Summary: R100 firmware no longer loads
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.1.0-rc1-00035-ge6a99d3
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
        AssignedTo: drivers_video-dri at kernel-bugs.osdl.org
        ReportedBy: cloos at jhcloos.com
        Regression: Yes


With kernel 3.1.0-rc1-00035-ge6a99d3 I now get:

 [drm] Loading R100 Microcode
 ------------[ cut here ]------------
 WARNING: at drivers/base/firmware_class.c:524 _request_firmware+0x37d/0x3a0()
 Hardware name: Inspiron 8100                   
 Modules linked in:
 Pid: 1, comm: swapper Not tainted 3.1.0-rc1-00035-ge6a99d3 #32
 Call Trace:
[    1.036839] Call Trace:
[    1.036883]  [<c153ba2a>] ? printk+0x1d/0x1f
[    1.036933]  [<c1031252>] warn_slowpath_common+0x72/0xa0
[    1.036978]  [<c1372a9d>] ? _request_firmware+0x37d/0x3a0
[    1.037064]  [<c1372a9d>] ? _request_firmware+0x37d/0x3a0
[    1.037111]  [<c10312a0>] warn_slowpath_null+0x20/0x30
[    1.037156]  [<c1372a9d>] _request_firmware+0x37d/0x3a0
[    1.037202]  [<c136a017>] ? platform_device_add+0xf7/0x1e0
[    1.037248]  [<c1372b5f>] request_firmware+0x1f/0x30
[    1.037296]  [<c130bc68>] r100_cp_init+0x298/0x880
[    1.037341]  [<c1310ac4>] r100_startup+0x224/0x320
[    1.037385]  [<c131101a>] r100_init+0x12a/0x290
[    1.037431]  [<c12d32a5>] radeon_device_init+0x345/0x410
[    1.037476]  [<c12d1b10>] ? cail_reg_write+0x40/0x40
[    1.037522]  [<c12d484f>] radeon_driver_load_kms+0x7f/0x110
[    1.037569]  [<c12a5893>] drm_get_pci_dev+0x143/0x260
[    1.037615]  [<c1537122>] radeon_pci_probe+0x82/0x87
[    1.037661]  [<c12127bc>] pci_device_probe+0x8c/0x120
[    1.037707]  [<c1149ed7>] ? sysfs_create_link+0x17/0x20
[    1.037756]  [<c1368516>] driver_probe_device+0x66/0x170
[    1.037800]  [<c12126f9>] ? pci_match_device+0xc9/0xe0
[    1.037845]  [<c13686b1>] __driver_attach+0x91/0xa0
[    1.037889]  [<c1368620>] ? driver_probe_device+0x170/0x170
[    1.037935]  [<c1367769>] bus_for_each_dev+0x49/0x70
[    1.037979]  [<c12116c0>] ? pci_dev_put+0x20/0x20
[    1.038041]  [<c1368221>] driver_attach+0x21/0x30
[    1.038086]  [<c1368620>] ? driver_probe_device+0x170/0x170
[    1.038132]  [<c1367f07>] bus_add_driver+0x187/0x250
[    1.038176]  [<c12116c0>] ? pci_dev_put+0x20/0x20
[    1.038220]  [<c1368bba>] driver_register+0x6a/0x120
[    1.038264]  [<c12121fc>] __pci_register_driver+0x3c/0xb0
[    1.038309]  [<c12a5acc>] drm_pci_init+0x11c/0x130
[    1.038356]  [<c177d6e9>] ? start_kernel+0x2d0/0x2d0
[    1.038402]  [<c179b98d>] radeon_init+0xd4/0xd6
[    1.038446]  [<c1001124>] do_one_initcall+0x34/0x170
[    1.038490]  [<c179b8b9>] ? ttm_init+0x64/0x64
[    1.038533]  [<c177d6e9>] ? start_kernel+0x2d0/0x2d0
[    1.038576]  [<c177d757>] kernel_init+0x6e/0xfa
[    1.038620]  [<c15486b6>] kernel_thread_helper+0x6/0x10
 ---[ end trace 6a17ba782679faba ]---
 platform radeon_cp.0: firmware: radeon/R100_cp.bin will not be loaded
 radeon_cp: Failed to load firmware "radeon/R100_cp.bin"
 [drm:r100_cp_init] *ERROR* Failed to load firmware!
 radeon 0000:01:00.0: failed initializing CP (-16).
 radeon 0000:01:00.0: Disabling GPU acceleration

It worked fine with 3.0.0.

The firmware is compiled in to the kernel.

Doing bisects on this box is painful; it may be some time before I can do so.

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