media: tuners: tda8290: reduce stack usage with kasan
With CONFIG_KASAN enabled, we get a relatively large stack frame in one function drivers/media/tuners/tda8290.c: In function 'tda8290_set_params': drivers/media/tuners/tda8290.c:310:1: warning: the frame size of 1520 bytes is larger than 1024 bytes [-Wframe-larger-than=] With CONFIG_KASAN_EXTRA this goes up to drivers/media/tuners/tda8290.c: In function 'tda8290_set_params': drivers/media/tuners/tda8290.c:310:1: error: the frame size of 3200 bytes is larger than 3072 bytes [-Werror=frame-larger-than=] We can significantly reduce this by marking local arrays as 'static const', and this should result in better compiled code for everyone. [mchehab@s-opensource.com: fix a trivial merge conflict] Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Michael Ira Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>hifive-unleashed-5.1
Arnd Bergmann
Mauro Carvalho Chehab
parent
c6b73bfcea
commit
8ff230fb4f
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@ -63,8 +63,8 @@ static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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unsigned char enable[2] = { 0x21, 0xC0 };
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unsigned char disable[2] = { 0x21, 0x00 };
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static unsigned char enable[2] = { 0x21, 0xC0 };
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static unsigned char disable[2] = { 0x21, 0x00 };
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unsigned char *msg;
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if (close) {
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@ -84,9 +84,9 @@ static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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unsigned char enable[2] = { 0x45, 0xc1 };
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unsigned char disable[2] = { 0x46, 0x00 };
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unsigned char buf[3] = { 0x45, 0x01, 0x00 };
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static unsigned char enable[2] = { 0x45, 0xc1 };
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static unsigned char disable[2] = { 0x46, 0x00 };
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static unsigned char buf[3] = { 0x45, 0x01, 0x00 };
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unsigned char *msg;
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if (close) {
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@ -178,25 +178,25 @@ static void tda8290_set_params(struct dvb_frontend *fe,
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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unsigned char soft_reset[] = { 0x00, 0x00 };
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static unsigned char soft_reset[] = { 0x00, 0x00 };
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unsigned char easy_mode[] = { 0x01, priv->tda8290_easy_mode };
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unsigned char expert_mode[] = { 0x01, 0x80 };
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unsigned char agc_out_on[] = { 0x02, 0x00 };
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unsigned char gainset_off[] = { 0x28, 0x14 };
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unsigned char if_agc_spd[] = { 0x0f, 0x88 };
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unsigned char adc_head_6[] = { 0x05, 0x04 };
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unsigned char adc_head_9[] = { 0x05, 0x02 };
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unsigned char adc_head_12[] = { 0x05, 0x01 };
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unsigned char pll_bw_nom[] = { 0x0d, 0x47 };
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unsigned char pll_bw_low[] = { 0x0d, 0x27 };
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unsigned char gainset_2[] = { 0x28, 0x64 };
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unsigned char agc_rst_on[] = { 0x0e, 0x0b };
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unsigned char agc_rst_off[] = { 0x0e, 0x09 };
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unsigned char if_agc_set[] = { 0x0f, 0x81 };
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unsigned char addr_adc_sat = 0x1a;
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unsigned char addr_agc_stat = 0x1d;
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unsigned char addr_pll_stat = 0x1b;
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unsigned char adc_sat = 0, agc_stat = 0,
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static unsigned char expert_mode[] = { 0x01, 0x80 };
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static unsigned char agc_out_on[] = { 0x02, 0x00 };
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static unsigned char gainset_off[] = { 0x28, 0x14 };
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static unsigned char if_agc_spd[] = { 0x0f, 0x88 };
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static unsigned char adc_head_6[] = { 0x05, 0x04 };
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static unsigned char adc_head_9[] = { 0x05, 0x02 };
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static unsigned char adc_head_12[] = { 0x05, 0x01 };
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static unsigned char pll_bw_nom[] = { 0x0d, 0x47 };
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static unsigned char pll_bw_low[] = { 0x0d, 0x27 };
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static unsigned char gainset_2[] = { 0x28, 0x64 };
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static unsigned char agc_rst_on[] = { 0x0e, 0x0b };
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static unsigned char agc_rst_off[] = { 0x0e, 0x09 };
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static unsigned char if_agc_set[] = { 0x0f, 0x81 };
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static unsigned char addr_adc_sat = 0x1a;
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static unsigned char addr_agc_stat = 0x1d;
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static unsigned char addr_pll_stat = 0x1b;
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static unsigned char adc_sat = 0, agc_stat = 0,
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pll_stat;
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int i;
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@ -468,9 +468,9 @@ static void tda8290_standby(struct dvb_frontend *fe)
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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unsigned char cb1[] = { 0x30, 0xD0 };
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unsigned char tda8290_standby[] = { 0x00, 0x02 };
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unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
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static unsigned char cb1[] = { 0x30, 0xD0 };
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static unsigned char tda8290_standby[] = { 0x00, 0x02 };
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static unsigned char tda8290_agc_tri[] = { 0x02, 0x20 };
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struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0, .buf=cb1, .len = 2};
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if (fe->ops.analog_ops.i2c_gate_ctrl)
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@ -495,9 +495,9 @@ static void tda8290_init_if(struct dvb_frontend *fe)
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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unsigned char set_VS[] = { 0x30, 0x6F };
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unsigned char set_GP00_CF[] = { 0x20, 0x01 };
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unsigned char set_GP01_CF[] = { 0x20, 0x0B };
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static unsigned char set_VS[] = { 0x30, 0x6F };
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static unsigned char set_GP00_CF[] = { 0x20, 0x01 };
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static unsigned char set_GP01_CF[] = { 0x20, 0x0B };
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if ((priv->cfg.config == TDA8290_LNA_GP0_HIGH_ON) ||
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(priv->cfg.config == TDA8290_LNA_GP0_HIGH_OFF))
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@ -539,10 +539,12 @@ static void tda8295_init_if(struct dvb_frontend *fe)
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static void tda8290_init_tuner(struct dvb_frontend *fe)
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{
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struct tda8290_priv *priv = fe->analog_demod_priv;
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unsigned char tda8275_init[] = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
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0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
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unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
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0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
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static unsigned char tda8275_init[] =
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{ 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
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0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
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static unsigned char tda8275a_init[] =
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{ 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
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0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
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struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
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.buf=tda8275_init, .len = 14};
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if (priv->ver & TDA8275A)
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@ -834,11 +836,11 @@ int tda829x_probe(struct i2c_adapter *i2c_adap, u8 i2c_addr)
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.addr = i2c_addr,
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};
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unsigned char soft_reset[] = { 0x00, 0x00 };
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unsigned char easy_mode_b[] = { 0x01, 0x02 };
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unsigned char easy_mode_g[] = { 0x01, 0x04 };
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unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
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unsigned char addr_dto_lsb = 0x07;
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static unsigned char soft_reset[] = { 0x00, 0x00 };
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static unsigned char easy_mode_b[] = { 0x01, 0x02 };
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static unsigned char easy_mode_g[] = { 0x01, 0x04 };
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static unsigned char restore_9886[] = { 0x00, 0xd6, 0x30 };
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static unsigned char addr_dto_lsb = 0x07;
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unsigned char data;
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#define PROBE_BUFFER_SIZE 8
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unsigned char buf[PROBE_BUFFER_SIZE];
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