tjh.dev
+16
-7
drivers/char/tpm/tpm-chip.c
+16
-7
drivers/char/tpm/tpm-chip.c
···
77
77
return chip->ops->go_idle(chip);
78
78
}
79
79
80
+
static void tpm_clk_enable(struct tpm_chip *chip)
81
+
{
82
+
if (chip->ops->clk_enable)
83
+
chip->ops->clk_enable(chip, true);
84
+
}
85
+
86
+
static void tpm_clk_disable(struct tpm_chip *chip)
87
+
{
88
+
if (chip->ops->clk_enable)
89
+
chip->ops->clk_enable(chip, false);
90
+
}
91
+
80
92
/**
81
93
* tpm_chip_start() - power on the TPM
82
94
* @chip: a TPM chip to use
···
101
89
{
102
90
int ret;
103
91
104
-
if (chip->ops->clk_enable)
105
-
chip->ops->clk_enable(chip, true);
92
+
tpm_clk_enable(chip);
106
93
107
94
if (chip->locality == -1) {
108
95
ret = tpm_request_locality(chip);
109
96
if (ret) {
110
-
chip->ops->clk_enable(chip, false);
97
+
tpm_clk_disable(chip);
111
98
return ret;
112
99
}
113
100
}
···
114
103
ret = tpm_cmd_ready(chip);
115
104
if (ret) {
116
105
tpm_relinquish_locality(chip);
117
-
if (chip->ops->clk_enable)
118
-
chip->ops->clk_enable(chip, false);
106
+
tpm_clk_disable(chip);
119
107
return ret;
120
108
}
121
109
···
134
124
{
135
125
tpm_go_idle(chip);
136
126
tpm_relinquish_locality(chip);
137
-
if (chip->ops->clk_enable)
138
-
chip->ops->clk_enable(chip, false);
127
+
tpm_clk_disable(chip);
139
128
}
140
129
EXPORT_SYMBOL_GPL(tpm_chip_stop);
141
130