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^~~ vim +/ipa +128 drivers/net/ipa/ipa_qmi.c 530f9216a9537b Alex Elder 2020-03-05 116 530f9216a9537b Alex Elder 2020-03-05 117 /* Determine whether everything is ready to start normal operation. 530f9216a9537b Alex Elder 2020-03-05 118 * We know everything (else) is ready when we know the IPA driver on 530f9216a9537b Alex Elder 2020-03-05 119 * the modem is ready, and the microcontroller is ready. 530f9216a9537b Alex Elder 2020-03-05 120 * 530f9216a9537b Alex Elder 2020-03-05 121 * When the modem boots (or reboots), the handshake sequence starts 530f9216a9537b Alex Elder 2020-03-05 122 * with the AP sending the modem an INIT_DRIVER request. Within 530f9216a9537b Alex Elder 2020-03-05 123 * that request, the uc_loaded flag will be zero (false) for an 530f9216a9537b Alex Elder 2020-03-05 124 * initial boot, non-zero (true) for a subsequent (SSR) boot. 530f9216a9537b Alex Elder 2020-03-05 125 */ 530f9216a9537b Alex Elder 2020-03-05 126 static void ipa_qmi_ready(struct ipa_qmi *ipa_qmi) 530f9216a9537b Alex Elder 2020-03-05 127 { 530f9216a9537b Alex Elder 2020-03-05 @128 struct ipa *ipa = container_of(ipa_qmi, struct ipa, qmi); 530f9216a9537b Alex Elder 2020-03-05 129 int ret; 530f9216a9537b Alex Elder 2020-03-05 130 530f9216a9537b Alex Elder 2020-03-05 131 /* We aren't ready until the modem and microcontroller are */ 530f9216a9537b Alex Elder 2020-03-05 132 if (!ipa_qmi->modem_ready || !ipa_qmi->uc_ready) 530f9216a9537b Alex Elder 2020-03-05 133 return; 530f9216a9537b Alex Elder 2020-03-05 134 530f9216a9537b Alex Elder 2020-03-05 135 /* Send the indication message if it was requested */ 530f9216a9537b Alex Elder 2020-03-05 136 ipa_qmi_indication(ipa_qmi); 530f9216a9537b Alex Elder 2020-03-05 137 530f9216a9537b Alex Elder 2020-03-05 138 /* The initial boot requires us to send the indication. */ 530f9216a9537b Alex Elder 2020-03-05 139 if (ipa_qmi->initial_boot) { 530f9216a9537b Alex Elder 2020-03-05 140 if (!ipa_qmi->indication_sent) 530f9216a9537b Alex Elder 2020-03-05 141 return; 530f9216a9537b Alex Elder 2020-03-05 142 530f9216a9537b Alex Elder 2020-03-05 143 /* The initial modem boot completed successfully */ 530f9216a9537b Alex Elder 2020-03-05 144 ipa_qmi->initial_boot = false; 530f9216a9537b Alex Elder 2020-03-05 145 } 530f9216a9537b Alex Elder 2020-03-05 146 530f9216a9537b Alex Elder 2020-03-05 147 /* We're ready. Start up normal operation */ 530f9216a9537b Alex Elder 2020-03-05 @148 ipa = container_of(ipa_qmi, struct ipa, qmi); 530f9216a9537b Alex Elder 2020-03-05 149 ret = ipa_modem_start(ipa); 530f9216a9537b Alex Elder 2020-03-05 150 if (ret) 530f9216a9537b Alex Elder 2020-03-05 151 dev_err(&ipa->pdev->dev, "error %d starting modem\n", ret); 530f9216a9537b Alex Elder 2020-03-05 152 } 530f9216a9537b Alex Elder 2020-03-05 153 :::::: The code at line 128 was first introduced by commit :::::: 530f9216a9537b58cdc2f967b5cd78f5dafb34c4 soc: qcom: ipa: AP/modem communications :::::: TO: Alex Elder :::::: CC: David S. Miller --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org