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