greybus: firmware: add comment to show size calculations

The firmware file name's maximum length is set to 56 right now, but it isn't very much readable how we got to that value (unless someone reads that line). Update the comment to show calculations. Reported-by: Alex Elder <[email protected]> Signed-off-by: Viresh Kumar <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
dtwlin · Aug 12, 2016 · ac96a60 · ac96a60
1 parent 0675363
commit ac96a60
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/drivers/staging/greybus/firmware.h b/drivers/staging/greybus/firmware.h
@@ -14,7 +14,10 @@
 
 #define FW_NAME_PREFIX	"gmp_"
 
-/* Length of the string in format: "FW_NAME_PREFIX""%08x_%08x_%08x_%08x_%s.tftf" */
+/*
+ * Length of the string in format: "FW_NAME_PREFIX""%08x_%08x_%08x_%08x_%s.tftf"
+ *                                  (3 + 1 + 4 * (8 + 1) + 10 + 1 + 4 + 1)
+ */
 #define FW_NAME_SIZE		56
 
 /* Firmware Management Protocol specific functions */