char: xilinx_hwicap: Fix typo in comment and extend it

s/regsiter/register/ Use origin comment from the first driver version which also explain the usage of XHI_MAX_RETRIES better. Signed-off-by: Michal Simek <[email protected]> Signed-off-by: Michal Simek <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
maraz · May 30, 2013 · 84524cf · 84524cf
1 parent 1dd24da
commit 84524cf
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/drivers/char/xilinx_hwicap/xilinx_hwicap.h b/drivers/char/xilinx_hwicap/xilinx_hwicap.h
@@ -85,7 +85,13 @@ struct hwicap_driver_config {
 	void (*reset)(struct hwicap_drvdata *drvdata);
 };
 
-/* Number of times to poll the done regsiter */
+/* Number of times to poll the done register. This has to be large
+ * enough to allow an entire configuration to complete. If an entire
+ * page (4kb) is configured at once, that could take up to 4k cycles
+ * with a byte-wide icap interface. In most cases, this driver is
+ * used with a much smaller fifo, but this should be sufficient in the
+ * worst case.
+ */
 #define XHI_MAX_RETRIES     5000
 
 /************ Constant Definitions *************/