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-rw-r--r--drivers/spi/spi-loopback-test.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/spi/spi-loopback-test.c b/drivers/spi/spi-loopback-test.c
index fcae3377ec26..6888d5c34ac4 100644
--- a/drivers/spi/spi-loopback-test.c
+++ b/drivers/spi/spi-loopback-test.c
@@ -508,7 +508,8 @@ static int spi_test_check_elapsed_time(struct spi_device *spi,
for (i = 0; i < test->transfer_count; i++) {
struct spi_transfer *xfer = test->transfers + i;
- unsigned long long nbits = BITS_PER_BYTE * xfer->len;
+ unsigned long long nbits = (unsigned long long)BITS_PER_BYTE *
+ xfer->len;
delay_usecs += xfer->delay_usecs;
if (!xfer->speed_hz)