1 files changed, 8 insertions, 2 deletions

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 51ad42fad567..200ca228d885 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -960,7 +960,7 @@ static int spi_transfer_one_message(struct spi_master *master,
         struct spi_transfer *xfer;
         bool keep_cs = false;
         int ret = 0;
-        unsigned long ms = 1;
+        unsigned long long ms = 1;
         struct spi_statistics *statm = &master->statistics;
         struct spi_statistics *stats = &msg->spi->statistics;
 
@@ -991,9 +991,13 @@ static int spi_transfer_one_message(struct spi_master *master,
 
                         if (ret > 0) {
                                 ret = 0;
-                                ms = xfer->len * 8 * 1000 / xfer->speed_hz;
+                                ms = 8LL * 1000LL * xfer->len;
+                                do_div(ms, xfer->speed_hz);
                                 ms += ms + 100; /* some tolerance */
 
+                                if (ms > UINT_MAX)
+                                        ms = UINT_MAX;
+
                                 ms = wait_for_completion_timeout(&master->xfer_completion,
                                                                  msecs_to_jiffies(ms));
                         }
@@ -1159,6 +1163,7 @@ static void __spi_pump_messages(struct spi_master *master, bool in_kthread)
                 if (ret < 0) {
                         dev_err(&master->dev, "Failed to power device: %d\n",
                                 ret);
+                        mutex_unlock(&master->io_mutex);
                         return;
                 }
         }
@@ -1174,6 +1179,7 @@ static void __spi_pump_messages(struct spi_master *master, bool in_kthread)
 
                         if (master->auto_runtime_pm)
                                 pm_runtime_put(master->dev.parent);
+                        mutex_unlock(&master->io_mutex);
                         return;
                 }
         }