[PATCH 5/7] smiapp: Don't poll for NVM ready on devices that don't need it

[Sakari Ailus]

Only some devices require polling for NVM ready. Do the polling only on
devices that need it.

Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
---
 drivers/media/i2c/smiapp/smiapp-core.c | 28 ++++++++++++++++----------
 1 file changed, 17 insertions(+), 11 deletions(-)

diff --git a/drivers/media/i2c/smiapp/smiapp-core.c 
b/drivers/media/i2c/smiapp/smiapp-core.c
index 5a136068f4d60..5a04ae2544aa0 100644
--- a/drivers/media/i2c/smiapp/smiapp-core.c
+++ b/drivers/media/i2c/smiapp/smiapp-core.c
@@ -986,21 +986,27 @@ static int smiapp_read_nvm_page(struct smiapp_sensor 
*sensor, u32 p, u8 *nvm)
        if (rval)
                return rval;
 
-       for (i = 1000; i > 0; i--) {
-               u32 s;
+       if (sensor->limits[SMIAPP_LIMIT_DATA_TRANSFER_IF_CAPABILITY] &
+           SMIAPP_DATA_TRANSFER_IF_CAPABILITY_POLL) {
+               for (i = 1000; i > 0; i--) {
+                       u32 s;
 
-               rval = smiapp_read(
-                       sensor,
-                       SMIAPP_REG_U8_DATA_TRANSFER_IF_1_STATUS, &s);
+                       rval = smiapp_read(
+                               sensor,
+                               SMIAPP_REG_U8_DATA_TRANSFER_IF_1_STATUS,
+                               &s);
 
-               if (rval)
-                       return rval;
+                       if (rval)
+                               return rval;
 
-               if (s & SMIAPP_DATA_TRANSFER_IF_1_STATUS_RD_READY)
-                       break;
+                       if (s & SMIAPP_DATA_TRANSFER_IF_1_STATUS_RD_READY)
+                               break;
+
+               }
+
+               if (!i)
+                       return -ETIMEDOUT;
        }
-       if (!i)
-               return -ETIMEDOUT;
 
        for (i = 0; i < SMIAPP_NVM_PAGE_SIZE; i++) {
                u32 v;
-- 
2.20.1