| Message ID | 20230712161123.465713-1-colin.i.king@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [next,V2] video: fbdev: kyro: make some const read-only arrays static and reduce type size | expand |
On 7/12/23 18:11, Colin Ian King wrote: > Don't populate the const read-only arrays on the stack but instead > make them static const. Use smaller types to use less storage for > the arrays. Also makes the object code a little smaller. > > Signed-off-by: Colin Ian King <colin.i.king@gmail.com> applied. Thanks! Helge > --- > > V2: Use smaller int types, kudos to Helge Deller for suggesting this > > --- > drivers/video/fbdev/kyro/STG4000InitDevice.c | 10 +++++----- > 1 file changed, 5 insertions(+), 5 deletions(-) > > diff --git a/drivers/video/fbdev/kyro/STG4000InitDevice.c b/drivers/video/fbdev/kyro/STG4000InitDevice.c > index edfa0a04854d..79886a246638 100644 > --- a/drivers/video/fbdev/kyro/STG4000InitDevice.c > +++ b/drivers/video/fbdev/kyro/STG4000InitDevice.c > @@ -83,11 +83,11 @@ volatile u32 i,count=0; \ > static u32 InitSDRAMRegisters(volatile STG4000REG __iomem *pSTGReg, > u32 dwSubSysID, u32 dwRevID) > { > - u32 adwSDRAMArgCfg0[] = { 0xa0, 0x80, 0xa0, 0xa0, 0xa0 }; > - u32 adwSDRAMCfg1[] = { 0x8732, 0x8732, 0xa732, 0xa732, 0x8732 }; > - u32 adwSDRAMCfg2[] = { 0x87d2, 0x87d2, 0xa7d2, 0x87d2, 0xa7d2 }; > - u32 adwSDRAMRsh[] = { 36, 39, 40 }; > - u32 adwChipSpeed[] = { 110, 120, 125 }; > + static const u8 adwSDRAMArgCfg0[] = { 0xa0, 0x80, 0xa0, 0xa0, 0xa0 }; > + static const u16 adwSDRAMCfg1[] = { 0x8732, 0x8732, 0xa732, 0xa732, 0x8732 }; > + static const u16 adwSDRAMCfg2[] = { 0x87d2, 0x87d2, 0xa7d2, 0x87d2, 0xa7d2 }; > + static const u8 adwSDRAMRsh[] = { 36, 39, 40 }; > + static const u8 adwChipSpeed[] = { 110, 120, 125 }; > u32 dwMemTypeIdx; > u32 dwChipSpeedIdx; >
diff --git a/drivers/video/fbdev/kyro/STG4000InitDevice.c b/drivers/video/fbdev/kyro/STG4000InitDevice.c index edfa0a04854d..79886a246638 100644 --- a/drivers/video/fbdev/kyro/STG4000InitDevice.c +++ b/drivers/video/fbdev/kyro/STG4000InitDevice.c @@ -83,11 +83,11 @@ volatile u32 i,count=0; \ static u32 InitSDRAMRegisters(volatile STG4000REG __iomem *pSTGReg, u32 dwSubSysID, u32 dwRevID) { - u32 adwSDRAMArgCfg0[] = { 0xa0, 0x80, 0xa0, 0xa0, 0xa0 }; - u32 adwSDRAMCfg1[] = { 0x8732, 0x8732, 0xa732, 0xa732, 0x8732 }; - u32 adwSDRAMCfg2[] = { 0x87d2, 0x87d2, 0xa7d2, 0x87d2, 0xa7d2 }; - u32 adwSDRAMRsh[] = { 36, 39, 40 }; - u32 adwChipSpeed[] = { 110, 120, 125 }; + static const u8 adwSDRAMArgCfg0[] = { 0xa0, 0x80, 0xa0, 0xa0, 0xa0 }; + static const u16 adwSDRAMCfg1[] = { 0x8732, 0x8732, 0xa732, 0xa732, 0x8732 }; + static const u16 adwSDRAMCfg2[] = { 0x87d2, 0x87d2, 0xa7d2, 0x87d2, 0xa7d2 }; + static const u8 adwSDRAMRsh[] = { 36, 39, 40 }; + static const u8 adwChipSpeed[] = { 110, 120, 125 }; u32 dwMemTypeIdx; u32 dwChipSpeedIdx;
Don't populate the const read-only arrays on the stack but instead make them static const. Use smaller types to use less storage for the arrays. Also makes the object code a little smaller. Signed-off-by: Colin Ian King <colin.i.king@gmail.com> --- V2: Use smaller int types, kudos to Helge Deller for suggesting this --- drivers/video/fbdev/kyro/STG4000InitDevice.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)