kernel: linux-sunxi/stage/sunxi-3.4
CODE:
drivers/power/axp_power/virtual20.c
static int regulator_virtual_consumer_probe(struct platform_device *pdev)
{
char *reg_id = pdev->dev.platform_data;
struct virtual_consumer_data *drvdata;
int ret, i;
pr_warning("[%s] enter1, pdev=%s, reg_id=%s\n", __FUNCTION__,
pdev->name, reg_id);
drvdata = kzalloc(sizeof(struct virtual_consumer_data),
GFP_KERNEL);
if (drvdata == NULL) {
pr_warning("[%s] enter 2\n", __FUNCTION__);
ret = -ENOMEM;
goto err;
}
mutex_init(&drvdata->lock);
pr_warning("[%s] pdev=%p, reg_id=%s\n", __FUNCTION__, pdev,
reg_id);
//drvdata->regulator = regulator_get(&pdev->dev, reg_id);
drvdata->regulator = regulator_get(NULL, reg_id); ----- Bug ?
//drvdata->regulator = regulator_get(NULL, "axp20_analog/fm");
if (IS_ERR(drvdata->regulator)) {
ret = PTR_ERR(drvdata->regulator);
pr_warning("[%s] enter3\n", __FUNCTION__);
goto err;
}
and I found the error "platform reg-20-cs-ldo2: Driver reg-20-cs-ldo2
requests probe deferral" is caused by the function
static int really_probe(struct device *dev, struct device_driver *drv)
at drivers/base/dd.c
LOGS:
[ 4.604562] Registering the dns_resolver key type
<6>VFP support v0.3: [ 4.611237] VFP support v0.3: implementor 41
architecture 2 part 30 variant 7 r4
implementor 41 architecture 2 part 30 variant 7 rev 4
<5>Registering SWP/SWPB emulation handler
[ 4.627459] Registering SWP/SWPB emulation handler
<4>[_regulator_get] 2
[ 4.634326] [_regulator_get] 2
<4>[_regulator_get] 3
[ 4.639396] [_regulator_get] 3
<3>[cpu_freq] ERR:try to get regulator failed, core vdd will not changed!
[ 4.648956] [cpu_freq] ERR:try to get regulator failed, core vdd will
not changed!
<6>[cpu_freq] INF:-------------------V-F Table-------------------
[ 4.662395] [cpu_freq] INF:-------------------V-F
Table-------------------
<6>[cpu_freq] INF: voltage = 1450mv frequency = 1008MHz
[ 4.674309] [cpu_freq] INF: voltage = 1450mv frequency = 1008MHz
<6>[cpu_freq] INF: voltage = 1425mv frequency = 912MHz
[ 4.685442] [cpu_freq] INF: voltage = 1425mv frequency = 912MHz
<6>[cpu_freq] INF: voltage = 1350mv frequency = 864MHz
[ 4.696585] [cpu_freq] INF: voltage = 1350mv frequency = 864MHz
<6>[cpu_freq] INF: voltage = 1250mv frequency = 720MHz
[ 4.707732] [cpu_freq] INF: voltage = 1250mv frequency = 720MHz
<6>[cpu_freq] INF: voltage = 1150mv frequency = 528MHz
[ 4.718871] [cpu_freq] INF: voltage = 1150mv frequency = 528MHz
<6>[cpu_freq] INF: voltage = 1100mv frequency = 312MHz
[ 4.730004] [cpu_freq] INF: voltage = 1100mv frequency = 312MHz
<6>[cpu_freq] INF: voltage = 1050mv frequency = 144MHz
[ 4.741137] [cpu_freq] INF: voltage = 1050mv frequency = 144MHz
<6>[cpu_freq] INF: voltage = 1000mv frequency = 0MHz
[ 4.752272] [cpu_freq] INF: voltage = 1000mv frequency = 0MHz
<6>[cpu_freq] INF:-----------------------------------------------
[ 4.764188] [cpu_freq]
INF:-----------------------------------------------
<6>[cpu_freq] INF:sunxi_cpufreq_initcall, get cpu frequency from
sysconfig, max freq: 1008MHz, min freqz
[ 4.780882] [cpu_freq] INF:sunxi_cpufreq_initcall, get cpu frequency
from sysconfig, max freq: 1008Mz
<6>registered taskstats version 1
[ 4.795506] registered taskstats version 1
<4>[really_probe] hdmi, hdmi
[ 4.803665] [really_probe] hdmi, hdmi
<6>I2C: i2c-5: HDMI I2C adapter
[ 4.810606] I2C: i2c-5: HDMI I2C adapter
<6>disp clks: lcd 74250000 pre_scale 1 hdmi 74250000 pll 297000000 2x 0
[ 4.843568] disp clks: lcd 74250000 pre_scale 1 hdmi 74250000 pll
297000000 2x 0
<6>Console: switching to colour frame buffer device 160x45
[ 5.405836] Console: switching to colour frame buffer device 160x45
<4>[really_probe] 5
[ 5.431016] [really_probe] 5
<6>sunxi-rtc sunxi-rtc: setting system clock to 2010-01-01 00:00:00 UTC
(1262304000)
[ 5.441668] sunxi-rtc sunxi-rtc: setting system clock to 2010-01-01
00:00:00 UTC (1262304000)
<4>BENN axp_regulator_init
[ 5.452640] BENN axp_regulator_init
<4>BENN axp_battery_init
[ 5.458493] BENN axp_battery_init
<4>BENN regulator_virtual_consumer_init
[ 5.465433] BENN regulator_virtual_consumer_init
<4>BENN virtual_init
[ 5.472241] BENN virtual_init
<4>[really_probe] reg-20-cs-ldo2, reg-20-cs-ldo2
[ 5.479698] [really_probe] reg-20-cs-ldo2, reg-20-cs-ldo2
<4>[regulator_virtual_consumer_probe] enter1, pdev=reg-20-cs-ldo2,
reg_id=axp20_analog/fm
[ 5.493018] [regulator_virtual_consumer_probe] enter1,
pdev=reg-20-cs-ldo2, reg_id=axp20_analog/fm
<4>[regulator_virtual_consumer_probe] pdev=c08b7378, reg_id=axp20_analog/fm
[ 5.508675] [regulator_virtual_consumer_probe] pdev=c08b7378,
reg_id=axp20_analog/fm
<4>[_regulator_get] 2
[ 5.518428] [_regulator_get] 2
<4>[_regulator_get] 3
[ 5.523488] [_regulator_get] 3
<4>[regulator_virtual_consumer_probe] enter3
[ 5.530536] [regulator_virtual_consumer_probe] enter3
<4>[regulator_virtual_consumer_probe] enter5
[ 5.539595] [regulator_virtual_consumer_probe] enter5
<4>[really_probe] 4
[ 5.546479] [really_probe] 4
<6>platform reg-20-cs-ldo2: Driver reg-20-cs-ldo2 requests probe deferral
[ 5.560895] platform reg-20-cs-ldo2: Driver reg-20-cs-ldo2 requests
probe deferral
<4>[really_probe] reg-20-cs-ldo3, reg-20-cs-ldo3
[ 5.572935] [really_probe] reg-20-cs-ldo3, reg-20-cs-ldo3
<4>[regulator_virtual_consumer_probe] enter1, pdev=reg-20-cs-ldo3,
reg_id=axp20_pll
[ 5.585738] [regulator_virtual_consumer_probe] enter1,
pdev=reg-20-cs-ldo3, reg_id=axp20_pll
<4>[regulator_virtual_consumer_probe] pdev=c08b7510, reg_id=axp20_pll
[ 5.600403] [regulator_virtual_consumer_probe] pdev=c08b7510,
reg_id=axp20_pll
<4>[_regulator_get] 2
[ 5.609638] [_regulator_get] 2
<4>[_regulator_get] 3
[ 5.614695] [_regulator_get] 3
<4>[regulator_virtual_consumer_probe] enter3
[ 5.621753] [regulator_virtual_consumer_probe] enter3
<4>[regulator_virtual_consumer_probe] enter5
[ 5.630798] [regulator_virtual_consumer_probe] enter5
<4>[really_probe] 4
[ 5.637687] [really_probe] 4
<6>platform reg-20-cs-ldo3: Driver reg-20-cs-ldo3 requests probe deferral
[ 5.647102] platform reg-20-cs-ldo3: Driver reg-20-cs-ldo3 requests
probe deferral
<4>[really_probe] reg-20-cs-ldo4, reg-20-cs-ldo4
[ 5.659153] [really_probe] reg-20-cs-ldo4, reg-20-cs-ldo4
<4>[regulator_virtual_consumer_probe] enter1, pdev=reg-20-cs-ldo4,
reg_id=axp20_hdmi
[ 5.672041] [regulator_virtual_consumer_probe] enter1,
pdev=reg-20-cs-ldo4, reg_id=axp20_hdmi
<4>[regulator_virtual_consumer_probe] pdev=c08b76a8, reg_id=axp20_hdmi
[ 5.686828] [regulator_virtual_consumer_probe] pdev=c08b76a8,
reg_id=axp20_hdmi
<4>[_regulator_get] 2
[ 5.696147] [_regulator_get] 2
<4>[_regulator_get] 3
[ 5.701221] [_regulator_get] 3
<4>[regulator_virtual_consumer_probe] enter3
[ 5.708268] [regulator_virtual_consumer_probe] enter3
<4>[regulator_virtual_consumer_probe] enter5
[ 5.717334] [regulator_virtual_consumer_probe] enter5
<4>[really_probe] 4
[ 5.724219] [really_probe] 4
<6>platform reg-20-cs-ldo4: Driver reg-20-cs-ldo4 requests probe deferral
[ 5.733623] platform reg-20-cs-ldo4: Driver reg-20-cs-ldo4 requests
probe deferral
<4>[really_probe] reg-20-cs-buck2, reg-20-cs-buck2
[ 5.745818] [really_probe] reg-20-cs-buck2, reg-20-cs-buck2
<4>[regulator_virtual_consumer_probe] enter1, pdev=reg-20-cs-buck2,
reg_id=Vcore
[ 5.758531] [regulator_virtual_consumer_probe] enter1,
pdev=reg-20-cs-buck2, reg_id=Vcore
<4>[regulator_virtual_consumer_probe] pdev=c08b7840, reg_id=Vcore
[ 5.772537] [regulator_virtual_consumer_probe] pdev=c08b7840,
reg_id=Vcore
<4>[_regulator_get] 2
[ 5.781423] [_regulator_get] 2
<4>[_regulator_get] 3
[ 5.786475] [_regulator_get] 3
<4>[regulator_virtual_consumer_probe] enter3
[ 5.793570] [regulator_virtual_consumer_probe] enter3
<4>[regulator_virtual_consumer_probe] enter5
[ 5.802633] [regulator_virtual_consumer_probe] enter5
<4>[really_probe] 4
[ 5.809520] [really_probe] 4
<6>platform reg-20-cs-buck2: Driver reg-20-cs-buck2 requests probe deferral
[ 5.819091] platform reg-20-cs-buck2: Driver reg-20-cs-buck2 requests
probe deferral
<4>[really_probe] reg-20-cs-buck3, reg-20-cs-buck3
[ 5.831454] [really_probe] reg-20-cs-buck3, reg-20-cs-buck3
<4>[regulator_virtual_consumer_probe] enter1, pdev=reg-20-cs-buck3,
reg_id=axp20_ddr
[ 5.844520] [regulator_virtual_consumer_probe] enter1,
pdev=reg-20-cs-buck3, reg_id=axp20_ddr
<4>[regulator_virtual_consumer_probe] pdev=c08b79d8, reg_id=axp20_ddr
[ 5.864218] [regulator_virtual_consumer_probe] pdev=c08b79d8,
reg_id=axp20_ddr
<4>[_regulator_get] 2
[ 5.873452] [_regulator_get] 2
<4>[_regulator_get] 3
[ 5.878512] [_regulator_get] 3
<4>[regulator_virtual_consumer_probe] enter3
[ 5.885570] [regulator_virtual_consumer_probe] enter3
<4>[regulator_virtual_consumer_probe] enter5
[ 5.894625] [regulator_virtual_consumer_probe] enter5
<4>[really_probe] 4
[ 5.901519] [really_probe] 4
<6>platform reg-20-cs-buck3: Driver reg-20-cs-buck3 requests probe deferral
[ 5.911086] platform reg-20-cs-buck3: Driver reg-20-cs-buck3 requests
probe deferral
<4>[really_probe] reg-20-cs-ldoio0, reg-20-cs-ldoio0
[ 5.923632] [really_probe] reg-20-cs-ldoio0, reg-20-cs-ldoio0
<4>[regulator_virtual_consumer_probe] enter1, pdev=reg-20-cs-ldoio0,
reg_id=axp20_mic
[ 5.936962] [regulator_virtual_consumer_probe] enter1,
pdev=reg-20-cs-ldoio0, reg_id=axp20_mic
<4>[regulator_virtual_consumer_probe] pdev=c08b7b70, reg_id=axp20_mic
[ 5.951752] [regulator_virtual_consumer_probe] pdev=c08b7b70,
reg_id=axp20_mic
<4>[_regulator_get] 2
[ 5.960985] [_regulator_get] 2
<4>[_regulator_get] 3
[ 5.966038] [_regulator_get] 3
<4>[regulator_virtual_consumer_probe] enter3
[ 5.973095] [regulator_virtual_consumer_probe] enter3
<4>[regulator_virtual_consumer_probe] enter5
[ 5.982154] [regulator_virtual_consumer_probe] enter5
<4>[really_probe] 4
[ 5.989071] [really_probe] 4
<6>platform reg-20-cs-ldoio0: Driver reg-20-cs-ldoio0 requests probe
deferral
[ 5.998822] platform reg-20-cs-ldoio0: Driver reg-20-cs-ldoio0
requests probe deferral
<6>ALSA device list:
[ 6.008772] ALSA device list:
<6> #0: sunxi-CODEC Audio Codec
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