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linux-next/drivers/gpu/host1x
Stephen Warren 22bbd5d949 gpu: host1x: handle the correct # of syncpt regs
BIT_WORD() truncates rather than rounds, so the loops in
syncpt_thresh_isr() and _host1x_intr_disable_all_syncpt_intrs() use <=
rather than < in an attempt to process the correct number of registers
when rounding of the conversion of count of bits to count of words is
necessary. However, when rounding isn't necessary because the value is
already a multiple of the divisor (as is the case for all values of
nb_pts the code actually sees), this causes one too many registers to
be processed.

Solve this by using and explicit DIV_ROUND_UP() call, rather than
BIT_WORD(), and comparing with < rather than <=.

Fixes: 7ede0b0bf3 ("gpu: host1x: Add syncpoint wait and interrupts")
Cc: <stable@vger.kernel.org> # 3.10
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-By: Terje Bergstrom <tbergstrom@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-04-16 17:11:04 +02:00
..
hw gpu: host1x: handle the correct # of syncpt regs 2014-04-16 17:11:04 +02:00
bus.c gpu: host1x: Export public API 2013-12-19 09:29:50 +01:00
bus.h drm/tegra: Move subdevice infrastructure to host1x 2013-10-31 09:55:33 +01:00
cdma.c gpu: host1x: Expose syncpt and channel functionality 2013-10-31 09:20:11 +01:00
cdma.h gpu: host1x: Add channel support 2013-04-22 12:32:43 +02:00
channel.c gpu: host1x: Export public API 2013-12-19 09:29:50 +01:00
channel.h gpu: host1x: Expose syncpt and channel functionality 2013-10-31 09:20:11 +01:00
debug.c gpu: host1x: Fix build warnings 2013-12-19 09:29:52 +01:00
debug.h gpu: host1x: Add debug support 2013-04-22 12:32:46 +02:00
dev.c gpu: host1x: Add Tegra124 support 2013-12-19 09:29:52 +01:00
dev.h gpu: host1x: Add MIPI pad calibration support 2013-12-19 09:29:43 +01:00
intr.c gpu: host1x: Add channel support 2013-04-22 12:32:43 +02:00
intr.h gpu: host1x: Add channel support 2013-04-22 12:32:43 +02:00
job.c gpu: host1x: do not check previously handled gathers 2014-02-12 07:50:37 +01:00
job.h gpu: host1x: Expose syncpt and channel functionality 2013-10-31 09:20:11 +01:00
Kconfig gpu: host1x: Increase compile test coverage 2013-12-19 09:29:51 +01:00
Makefile gpu: host1x: Add Tegra124 support 2013-12-19 09:29:52 +01:00
mipi.c gpu: host1x: Fix more sparse warnings 2013-12-19 09:29:51 +01:00
syncpt.c gpu: host1x: export host1x_syncpt_incr_max() function 2014-04-04 09:12:49 +02:00
syncpt.h gpu: host1x: Add syncpoint base support 2013-10-31 09:55:48 +01:00