[PATCH] block/DAC960.c: make some arrays static const, shrinks object size

From: Colin King
Date: Tue Aug 21 2018 - 05:12:58 EST


From: Colin Ian King <colin.king@xxxxxxxxxxxxx>

Don't populate the arrays ReadCacheStatus, WriteCacheStatus and
SenseErrors on the stack but instead make them static const. Makes
the object code smaller by 47 bytes:

Before:
text data bss dec hex filename
160974 34628 832 196434 2ff52 drivers/block/DAC960.o

After:
text data bss dec hex filename
160671 34884 832 196387 2ff23 drivers/block/DAC960.o

(gcc version 8.2.0 x86_64)

Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
---
drivers/block/DAC960.c | 42 ++++++++++++++++++++++++------------------
1 file changed, 24 insertions(+), 18 deletions(-)

diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index f99e5c883368..581312ac375f 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -2428,16 +2428,20 @@ static bool DAC960_V2_ReportDeviceConfiguration(DAC960_Controller_T
{
DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
- unsigned char *ReadCacheStatus[] = { "Read Cache Disabled",
- "Read Cache Enabled",
- "Read Ahead Enabled",
- "Intelligent Read Ahead Enabled",
- "-", "-", "-", "-" };
- unsigned char *WriteCacheStatus[] = { "Write Cache Disabled",
- "Logical Device Read Only",
- "Write Cache Enabled",
- "Intelligent Write Cache Enabled",
- "-", "-", "-", "-" };
+ static const unsigned char *ReadCacheStatus[] = {
+ "Read Cache Disabled",
+ "Read Cache Enabled",
+ "Read Ahead Enabled",
+ "Intelligent Read Ahead Enabled",
+ "-", "-", "-", "-"
+ };
+ static const unsigned char *WriteCacheStatus[] = {
+ "Write Cache Disabled",
+ "Logical Device Read Only",
+ "Write Cache Enabled",
+ "Intelligent Write Cache Enabled",
+ "-", "-", "-", "-"
+ };
unsigned char *GeometryTranslation;
if (LogicalDeviceInfo == NULL) continue;
switch (LogicalDeviceInfo->DriveGeometry)
@@ -4339,14 +4343,16 @@ static void DAC960_V1_ProcessCompletedCommand(DAC960_Command_T *Command)
static void DAC960_V2_ReadWriteError(DAC960_Command_T *Command)
{
DAC960_Controller_T *Controller = Command->Controller;
- unsigned char *SenseErrors[] = { "NO SENSE", "RECOVERED ERROR",
- "NOT READY", "MEDIUM ERROR",
- "HARDWARE ERROR", "ILLEGAL REQUEST",
- "UNIT ATTENTION", "DATA PROTECT",
- "BLANK CHECK", "VENDOR-SPECIFIC",
- "COPY ABORTED", "ABORTED COMMAND",
- "EQUAL", "VOLUME OVERFLOW",
- "MISCOMPARE", "RESERVED" };
+ static const unsigned char *SenseErrors[] = {
+ "NO SENSE", "RECOVERED ERROR",
+ "NOT READY", "MEDIUM ERROR",
+ "HARDWARE ERROR", "ILLEGAL REQUEST",
+ "UNIT ATTENTION", "DATA PROTECT",
+ "BLANK CHECK", "VENDOR-SPECIFIC",
+ "COPY ABORTED", "ABORTED COMMAND",
+ "EQUAL", "VOLUME OVERFLOW",
+ "MISCOMPARE", "RESERVED"
+ };
unsigned char *CommandName = "UNKNOWN";
switch (Command->CommandType)
{
--
2.17.1