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| author |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-10-09 22:13:30 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-10-09 22:13:30 +0200 |
| commit | 670aee3fc7ac37ae947f8b582d87b51d5fa36524 (patch) | |
| tree | 9885998483d4506208e5aef9c13c8a86adea20bb /drivers/dma/idma64.c | |
| parent | Merge tag 'pull_req_4.3_rc4' of https://git.kernel.org/pub/scm/linux/kernel/git/mzx/devfreq into pm-devfreq (diff) | |
| parent | cpufreq: prevent lockup on reading scaling_available_frequencies (diff) | |
| download | linux-dev-670aee3fc7ac37ae947f8b582d87b51d5fa36524.tar.xz linux-dev-670aee3fc7ac37ae947f8b582d87b51d5fa36524.zip | |
Merge branches 'pm-devfreq' and 'pm-cpufreq'
* pm-devfreq:
PM / devfreq: fix double kfree
PM / devfreq: Fix governor_store()
* pm-cpufreq:
cpufreq: prevent lockup on reading scaling_available_frequencies
cpufreq: acpi_cpufreq: prevent crash on reading freqdomain_cpus
Diffstat (limited to 'drivers/dma/idma64.c')
| -rw-r--r-- | drivers/dma/idma64.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/dma/idma64.c b/drivers/dma/idma64.c index 18c14e1f1414..48d6d9e94f67 100644 --- a/drivers/dma/idma64.c +++ b/drivers/dma/idma64.c @@ -355,23 +355,23 @@ static size_t idma64_active_desc_size(struct idma64_chan *idma64c) struct idma64_desc *desc = idma64c->desc; struct idma64_hw_desc *hw; size_t bytes = desc->length; - u64 llp; - u32 ctlhi; + u64 llp = channel_readq(idma64c, LLP); + u32 ctlhi = channel_readl(idma64c, CTL_HI); unsigned int i = 0; - llp = channel_readq(idma64c, LLP); do { hw = &desc->hw[i]; - } while ((hw->llp != llp) && (++i < desc->ndesc)); + if (hw->llp == llp) + break; + bytes -= hw->len; + } while (++i < desc->ndesc); if (!i) return bytes; - do { - bytes -= desc->hw[--i].len; - } while (i); + /* The current chunk is not fully transfered yet */ + bytes += desc->hw[--i].len; - ctlhi = channel_readl(idma64c, CTL_HI); return bytes - IDMA64C_CTLH_BLOCK_TS(ctlhi); } |