On Tue, Jul 28, 2020 at 12:09:18PM +0200, Christoph Hellwig wrote:
> Ok, I found a slight bug that wasn't intended.  I wanted to make sure
> we can always fall back to a lower pool, but got that wrong.  Should be
> fixed in the next version.

Hi Christoph and Nicolas,

Did a version of that series ever get send out? I am coming into the
conversation late but I am running into an issue with the Raspberry Pi 4
not booting on linux-next, which appears to be due to this patch now in
mainline as commit d9765e41d8e9 ("dma-pool: do not allocate pool memory
from CMA") combined with
https://lore.kernel.org/lkml/[email protected]/
in -next:

[    1.423163] raspberrypi-firmware soc:firmware: Request 0x00000001 returned 
status 0x00000000
[    1.431883] raspberrypi-firmware soc:firmware: Request 0x00030046 returned 
status 0x00000000
[    1.443888] raspberrypi-firmware soc:firmware: Request 0x00030043 returned 
status 0x00000000
[    1.452527] raspberrypi-exp-gpio soc:firmware:gpio: Failed to get GPIO 0 
config (-22 80)
[    1.460836] raspberrypi-firmware soc:firmware: Request 0x00030043 returned 
status 0x00000000
[    1.469445] raspberrypi-exp-gpio soc:firmware:gpio: Failed to get GPIO 1 
config (-22 81)
[    1.477735] raspberrypi-firmware soc:firmware: Request 0x00030043 returned 
status 0x00000000
[    1.486350] raspberrypi-exp-gpio soc:firmware:gpio: Failed to get GPIO 2 
config (-22 82)
[    1.494639] raspberrypi-firmware soc:firmware: Request 0x00030043 returned 
status 0x00000000
[    1.503246] raspberrypi-exp-gpio soc:firmware:gpio: Failed to get GPIO 3 
config (-22 83)
[    1.511529] raspberrypi-firmware soc:firmware: Request 0x00030043 returned 
status 0x00000000
[    1.520131] raspberrypi-exp-gpio soc:firmware:gpio: Failed to get GPIO 4 
config (-22 84)
[    1.528414] raspberrypi-firmware soc:firmware: Request 0x00030043 returned 
status 0x00000000
[    1.537017] raspberrypi-exp-gpio soc:firmware:gpio: Failed to get GPIO 5 
config (-22 85)
[    1.545299] raspberrypi-firmware soc:firmware: Request 0x00030043 returned 
status 0x00000000
[    1.553903] raspberrypi-exp-gpio soc:firmware:gpio: Failed to get GPIO 6 
config (-22 86)
[    1.562184] raspberrypi-firmware soc:firmware: Request 0x00030043 returned 
status 0x00000000
[    1.570787] raspberrypi-exp-gpio soc:firmware:gpio: Failed to get GPIO 7 
config (-22 87)
[    1.579897] raspberrypi-firmware soc:firmware: Request 0x00030030 returned 
status 0x00000000
[    1.589419] raspberrypi-firmware soc:firmware: Request 0x00028001 returned 
status 0x00000000
[    1.599391] raspberrypi-firmware soc:firmware: Request 0x00030043 returned 
status 0x00000000
[    1.608018] raspberrypi-exp-gpio soc:firmware:gpio: Failed to get GPIO 1 
config (-22 81)
[    1.616313] raspberrypi-firmware soc:firmware: Request 0x00030043 returned 
status 0x00000000
[    1.624932] raspberrypi-exp-gpio soc:firmware:gpio: Failed to get GPIO 1 
config (-22 81)
[    1.633195] pwrseq_simple: probe of wifi-pwrseq failed with error -22
[    1.643904] raspberrypi-firmware soc:firmware: Request 0x00030043 returned 
status 0x00000000
[    1.652544] raspberrypi-exp-gpio soc:firmware:gpio: Failed to get GPIO 2 
config (-22 82)
[    1.660839] raspberrypi-firmware soc:firmware: Request 0x00030041 returned 
status 0x00000000
[    1.669446] raspberrypi-exp-gpio soc:firmware:gpio: Failed to get GPIO 2 
state (-22 82)
[    1.677727] leds-gpio: probe of leds failed with error -22
[    1.683735] raspberrypi-firmware soc:firmware: Request 0x00030043 returned 
status 0x00000000
[    1.692346] raspberrypi-exp-gpio soc:firmware:gpio: Failed to get GPIO 6 
config (-22 86)
[    1.700636] raspberrypi-firmware soc:firmware: Request 0x00030043 returned 
status 0x00000000
[    1.709240] raspberrypi-exp-gpio soc:firmware:gpio: Failed to get GPIO 6 
config (-22 86)
[    1.717496] reg-fixed-voltage: probe of sd_vcc_reg failed with error -22
[    1.725546] raspberrypi-firmware soc:firmware: Request 0x00030043 returned 
status 0x00000000
[    1.734176] raspberrypi-exp-gpio soc:firmware:gpio: Failed to get GPIO 4 
config (-22 84)
[    1.742465] raspberrypi-firmware soc:firmware: Request 0x00030043 returned 
status 0x00000000
[    1.751072] raspberrypi-exp-gpio soc:firmware:gpio: Failed to get GPIO 4 
config (-22 84)
[    1.759332] gpio-regulator: probe of sd_io_1v8_reg failed with error -22
[    1.768042] raspberrypi-firmware soc:firmware: Request 0x00028001 returned 
status 0x00000000
[    1.780871] ALSA device list:
[    1.783960]   No soundcards found.
[    1.787633] Waiting for root device PARTUUID=45a8dd8a-02...

I am unsure if it is related to the issue that Amit is having or
if that makes sense at all but I can reliably reproduce it.

v5.8-rc1: OK
v5.8-rc1 + d9765e41d8e9e: OK
v5.8-rc1 + "of_address: Add bus type match for pci ranges parser": OK
v5.8-rc1 + both: BROKEN

I wanted to test the series to see if this fixes anything. If you would
prefer a different thread for this or further information, please let
me know.

Cheers,
Nathan

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