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Date: Mon, 18 Sep 2017 15:24:44 +0100 From: Colin King <colin.king@...onical.com> To: Michael Krufky <mkrufky@...uxtv.org>, Mauro Carvalho Chehab <mchehab@...nel.org>, linux-media@...r.kernel.org Cc: kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH] [media] cxusb: pass buf as a const u8 * pointer and make buf static const From: Colin Ian King <colin.king@...onical.com> 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@...onical.com> --- drivers/media/usb/dvb-usb/cxusb.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/media/usb/dvb-usb/cxusb.c b/drivers/media/usb/dvb-usb/cxusb.c index 37dea0adc695..b5cc1b990065 100644 --- a/drivers/media/usb/dvb-usb/cxusb.c +++ b/drivers/media/usb/dvb-usb/cxusb.c @@ -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, -- 2.14.1
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