From: linux@prisktech.co.nz (Tony Prisk)
To: linux-arm-kernel@lists.infradead.org
Subject: dma_alloc_coherent fails in framebuffer
Date: Sun, 14 Oct 2012 18:28:43 +1300 [thread overview]
Message-ID: <1350192523.10946.4.camel@gitbox> (raw)
Up until 07 Oct, drivers/video/wm8505-fb.c was working fine, but on the
11 Oct when I did another pull from linus all of a sudden
dma_alloc_coherent is failing to allocate the framebuffer any longer.
I did a quick look back and found this:
ARM: add coherent dma ops
arch_is_coherent is problematic as it is a global symbol. This
doesn't work for multi-platform kernels or platforms which can support
per device coherent DMA.
This adds arm_coherent_dma_ops to be used for devices which connected
coherently (i.e. to the ACP port on Cortex-A9 or A15). The arm_dma_ops
are modified at boot when arch_is_coherent is true.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
This is the only patch lately that I could find (not that I would claim
to be any good at finding things) that is related to the problem. Could
it have caused the allocations to fail?
Regards
Tony P
next reply other threads:[~2012-10-14 5:28 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-14 5:28 Tony Prisk [this message]
2012-10-14 20:34 ` dma_alloc_coherent fails in framebuffer Tony Prisk
2012-10-14 20:34 ` Tony Prisk
2012-10-14 22:26 ` Tony Prisk
2012-10-14 22:26 ` Tony Prisk
2012-10-15 6:42 ` Tomasz Figa
2012-10-15 6:42 ` Tomasz Figa
2012-10-15 8:03 ` Tony Prisk
2012-10-15 8:03 ` Tony Prisk
2012-10-15 13:35 ` Marek Szyprowski
2012-10-15 13:35 ` Marek Szyprowski
2012-10-15 9:45 ` Mel Gorman
2012-10-15 9:45 ` Mel Gorman
2012-10-15 18:28 ` Tony Prisk
2012-10-15 18:28 ` Tony Prisk
2012-10-16 2:17 ` Bob Liu
2012-10-16 2:17 ` Bob Liu
2012-10-16 5:02 ` Tony Prisk
2012-10-16 5:54 ` Tony Prisk
2012-10-16 5:54 ` Tony Prisk
2012-10-16 6:50 ` Tony Prisk
2012-10-16 6:50 ` Tony Prisk
2012-10-16 7:58 ` Mel Gorman
2012-10-16 7:58 ` Mel Gorman
2012-10-16 8:13 ` Tony Prisk
2012-10-16 8:13 ` Tony Prisk
2012-10-16 14:41 ` James Bottomley
2012-10-16 14:41 ` James Bottomley
2012-10-17 2:26 ` Bob Liu
2012-10-17 2:26 ` Bob Liu
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