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media: cxusb: pass buf as a const u8 * pointer and make buf static const

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Don't populate the read-only u8 array buf on the stack at run time but
instead make it static const; makes object code smaller saving over 480
bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
  33030	  65936	    192	  99158	  18356	drivers/media/usb/dvb-usb/cxusb.o

After:
   text	   data	    bss	    dec	    hex	filename
  32446	  66032	    192	  98670	  1816e	drivers/media/usb/dvb-usb/cxusb.o

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Colin Ian King 2017-09-18 10:24:44 -04:00 committed by Mauro Carvalho Chehab
parent d259f91c0e
commit cee32edb23
1 changed files with 3 additions and 2 deletions
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5
drivers/media/usb/dvb-usb/cxusb.c
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@ -56,7 +56,7 @@ DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
#define deb_i2c(args...) dprintk(dvb_usb_cxusb_debug, 0x02, args)
static int cxusb_ctrl_msg(struct dvb_usb_device *d,
u8 cmd, u8 *wbuf, int wlen, u8 *rbuf, int rlen)
u8 cmd, const u8 *wbuf, int wlen, u8 *rbuf, int rlen)
{
struct cxusb_state *st = d->priv;
int ret;
@ -290,7 +290,8 @@ static int cxusb_aver_power_ctrl(struct dvb_usb_device *d, int onoff)
/* FIXME: We don't know why, but we need to configure the
* lgdt3303 with the register settings below on resume */
int i;
u8 buf, bufs[] = {
u8 buf;
static const u8 bufs[] = {
0x0e, 0x2, 0x00, 0x7f,
0x0e, 0x2, 0x02, 0xfe,
0x0e, 0x2, 0x02, 0x01,