1 files changed, 7 insertions, 9 deletions

diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index 907a45fe9d4..ce6f48c695f 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -517,7 +517,9 @@ static void ads7846_rx(void *ads)
         if (x == MAX_12BIT)
                 x = 0;
 
-        if (likely(x && z1)) {
+        if (ts->model == 7843) {
+                Rt = ts->pressure_max / 2;
+        } else if (likely(x && z1)) {
                 /* compute touch pressure resistance using equation #2 */
                 Rt = z2;
                 Rt -= z1;
@@ -525,11 +527,9 @@ static void ads7846_rx(void *ads)
                 Rt *= ts->x_plate_ohms;
                 Rt /= z1;
                 Rt = (Rt + 2047) >> 12;
-        } else
+        } else {
                 Rt = 0;
-
-        if (ts->model == 7843)
-                Rt = ts->pressure_max / 2;
+        }
 
         /* Sample found inconsistent by debouncing or pressure is beyond
          * the maximum. Don't report it to user space, repeat at least
@@ -633,19 +633,17 @@ static void ads7846_rx_val(void *ads)
         struct ads7846 *ts = ads;
         struct spi_message *m;
         struct spi_transfer *t;
-        u16 *rx_val;
         int val;
         int action;
         int status;
 
         m = &ts->msg[ts->msg_idx];
         t = list_entry(m->transfers.prev, struct spi_transfer, transfer_list);
-        rx_val = t->rx_buf;
 
         /* adjust:  on-wire is a must-ignore bit, a BE12 value, then padding;
          * built from two 8 bit values written msb-first.
          */
-        val = be16_to_cpu(*rx_val) >> 3;
+        val = be16_to_cpup((__be16 *)t->rx_buf) >> 3;
 
         action = ts->filter(ts->filter_data, ts->msg_idx, &val);
         switch (action) {
@@ -659,7 +657,7 @@ static void ads7846_rx_val(void *ads)
                 m = ts->last_msg;
                 break;
         case ADS7846_FILTER_OK:
-                *rx_val = val;
+                *(u16 *)t->rx_buf = val;
                 ts->tc.ignore = 0;
                 m = &ts->msg[++ts->msg_idx];
                 break;