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Subject[PATCH 04/10] dmatest: move dmatest_channels and nr_channels to dmatest_info
Date
We don't need to have them global and later we would like to protect access to
them as well.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/dma/dmatest.c | 29 ++++++++++++++++-------------
1 file changed, 16 insertions(+), 13 deletions(-)

diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 7f9e3cc..475a21a 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -109,6 +109,7 @@ struct dmatest_chan {
* @timeout: transfer timeout in msec, -1 for infinite timeout
*/
struct dmatest_info {
+ /* Test parameters */
unsigned int buf_size;
char channel[20];
char device[20];
@@ -118,17 +119,14 @@ struct dmatest_info {
unsigned int xor_sources;
unsigned int pq_sources;
int timeout;
+
+ /* Internal state */
+ struct list_head channels;
+ unsigned int nr_channels;
};

static struct dmatest_info test_info;

-/*
- * These are protected by dma_list_mutex since they're only used by
- * the DMA filter function callback
- */
-static LIST_HEAD(dmatest_channels);
-static unsigned int nr_channels;
-
static bool dmatest_match_channel(struct dmatest_info *info,
struct dma_chan *chan)
{
@@ -690,8 +688,8 @@ static int dmatest_add_channel(struct dmatest_info *info,
pr_info("dmatest: Started %u threads using %s\n",
thread_count, dma_chan_name(chan));

- list_add_tail(&dtc->node, &dmatest_channels);
- nr_channels++;
+ list_add_tail(&dtc->node, &info->channels);
+ info->nr_channels++;

return 0;
}
@@ -725,7 +723,8 @@ static int run_threaded_test(struct dmatest_info *info)
}
} else
break; /* no more channels available */
- if (info->max_channels && nr_channels >= info->max_channels)
+ if (info->max_channels &&
+ info->nr_channels >= info->max_channels)
break; /* we have all we need */
}
return err;
@@ -736,14 +735,15 @@ static void stop_threaded_test(struct dmatest_info *info)
struct dmatest_chan *dtc, *_dtc;
struct dma_chan *chan;

- list_for_each_entry_safe(dtc, _dtc, &dmatest_channels, node) {
+ list_for_each_entry_safe(dtc, _dtc, &info->channels, node) {
list_del(&dtc->node);
chan = dtc->chan;
dmatest_cleanup_channel(dtc);
- pr_debug("dmatest: dropped channel %s\n",
- dma_chan_name(chan));
+ pr_debug("dmatest: dropped channel %s\n", dma_chan_name(chan));
dma_release_channel(chan);
}
+
+ info->nr_channels = 0;
}

static int __init dmatest_init(void)
@@ -752,6 +752,9 @@ static int __init dmatest_init(void)

memset(info, 0, sizeof(*info));

+ INIT_LIST_HEAD(&info->channels);
+
+ /* Set default parameters */
info->buf_size = test_buf_size;
strlcpy(info->channel, test_channel, sizeof(info->channel));
strlcpy(info->device, test_device, sizeof(info->device));
--
1.8.2.rc0.22.gb3600c3


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