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authorTobias Klauser <tklauser@distanz.ch>2016-08-10 09:38:46 +0200
committerTobias Klauser <tklauser@distanz.ch>2016-08-10 09:38:46 +0200
commitcb158d929bdb417af3b6fdc8fa39bc9a76068793 (patch)
tree9911fbef83ade8d62587df5026179fd00ca4fe43 /proto_icmpv6.c
parent66cf8073cb31cebf4532afec9b18556aff8088fb (diff)
build: Disable all optimization options for debug builds
Disable all optimizations with the GCC -O0 switch. Only explicitely enable additional optimization options for non-debug builds. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Diffstat (limited to 'proto_icmpv6.c')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-14 07:57:05 +0000
spin_lock_irqsave(pch->lock, flags) at dma_pl330_rqcb:1505. I have fixed it as suggested by Marek Szyprowski. First, I have replaced `pch->lock' with `pl330->lock' in functions `pl330_alloc_chan_resources' and `pl330_free_chan_resources'. This avoids the double-lock by acquiring a different lock than `dma_pl330_rqcb'. NOTE that, as a result, `pl330_free_chan_resources' executes `list_splice_tail_init' on `pch->work_list' under lock `pl330->lock', whereas in the rest of the code `pch->work_list' is protected by `pch->lock'. I don't know if this may cause race conditions. Similarly `pch->cyclic' is written by `pl330_alloc_chan_resources' under `pl330->lock' but read by `pl330_tx_submit' under `pch->lock'. Second, I have removed locking from `pl330_request_channel' and `pl330_release_channel' functions. Function `pl330_request_channel' is only called from `pl330_alloc_chan_resources', so the lock is already held. Function `pl330_release_channel' is called from `pl330_free_chan_resources', which already holds the lock, and from `pl330_del'. Function `pl330_del' is called in an error path of `pl330_probe' and at the end of `pl330_remove', but I assume that there cannot be concurrent accesses to the protected data at those points. Signed-off-by: Iago Abal <mail@iagoabal.eu> Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'tools/power/x86')