Its meaning is to limit amount of error messages to be printed out when buffer
mismatch is occured.
Signed-off-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
---
drivers/dma/dmatest.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index d19234b..4225a29 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -66,6 +66,9 @@ module_param(timeout, uint, S_IRUGO);
MODULE_PARM_DESC(timeout, "Transfer Timeout in msec (default: 3000), "
"Pass -1 for infinite timeout");
+/* Maximum amount of mismatched bytes in buffer to print */
+#define MAX_ERROR_COUNT 32
+
/*
* Initialization patterns. All bytes in the source buffer has bit 7
* set, all bytes in the destination buffer has bit 7 cleared.
@@ -249,7 +252,7 @@ static unsigned int dmatest_verify(u8 **bufs, unsigned int
start,
actual = buf[i];
expected = pattern | (~counter & PATTERN_COUNT_MASK);
if (actual != expected) {
- if (error_count < 32)
+ if (error_count < MAX_ERROR_COUNT)
dmatest_mismatch(actual, pattern, i,
counter, is_srcbuf);
error_count++;
@@ -258,9 +261,9 @@ static unsigned int dmatest_verify(u8 **bufs, unsigned int
start,
}
}
- if (error_count > 32)
+ if (error_count > MAX_ERROR_COUNT)
pr_warning("%s: %u errors suppressed\n",
- current->comm, error_count - 32);
+ current->comm, error_count - MAX_ERROR_COUNT);
return error_count;
}
--
1.8.2.rc0.22.gb3600c3
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
