1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/media/video/cx18/cx18-driver.h b/drivers/media/video/cx18/cx18-driver.h
index 66cb748875c7..80f5f563d4fc 100644
--- a/drivers/media/video/cx18/cx18-driver.h
+++ b/drivers/media/video/cx18/cx18-driver.h
@@ -171,6 +171,7 @@
 
 #define CX18_MAX_PGM_INDEX (400)
 
+extern int cx18_retry_mmio;     /* enable check & retry of mmio accesses */
 extern int cx18_debug;
 
 
@@ -344,6 +345,13 @@ struct cx18_i2c_algo_callback_data {
         int bus_index;   /* 0 or 1 for the cx23418's 1st or 2nd I2C bus */
 };
 
+#define CX18_MAX_MMIO_RETRIES 10
+
+struct cx18_mmio_stats {
+        atomic_t retried_write[CX18_MAX_MMIO_RETRIES+1];
+        atomic_t retried_read[CX18_MAX_MMIO_RETRIES+1];
+};
+
 /* Struct to hold info about cx18 cards */
 struct cx18 {
         int num;                /* board number, -1 during init! */
@@ -433,6 +441,9 @@ struct cx18 {
         u32 gpio_val;
         struct mutex gpio_lock;
 
+        /* Statistics */
+        struct cx18_mmio_stats mmio_stats;
+
         /* v4l2 and User settings */
 
         /* codec settings */