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UPSTREAM: soc: qcom: qmi: Return EPROBE_DEFER if no address family

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If a client comes up early in the boot process (perhaps was a built-in
driver), qmi_handle_init() will likely fail with a EAFNOSUPPORT since the
underlying ipc router hasn't init'd and registered the address family.
This should not be a fatal error since chances are, the router will come
up later, so recode the error to EPROBE_DEFER so that clients will retry
later.

Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
Link: https://lore.kernel.org/r/20191106230511.1290-1-jeffrey.l.hugo@gmail.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
(cherry picked from commit 52af26e33e700158e6549f1465fcf9da099fabfa)
Signed-off-by: John Stultz <john.stultz@linaro.org>
Change-Id: I26a0dabe9b1f3b8e9cc793f7f52ee8f658ecdce3
This commit is contained in:
Jeffrey Hugo 2019-11-06 15:05:11 -08:00 • committed by Todd Kjos
commit 2d00c82d25
1 changed files with 6 additions and 2 deletions
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8
drivers/soc/qcom/qmi_interface.c
View file

@ -655,8 +655,12 @@ int qmi_handle_init(struct qmi_handle *qmi, size_t recv_buf_size,
qmi->sock = qmi_sock_create(qmi, &qmi->sq);
if (IS_ERR(qmi->sock)) {
pr_err("failed to create QMI socket\n");
ret = PTR_ERR(qmi->sock);
if (PTR_ERR(qmi->sock) == -EAFNOSUPPORT) {
ret = -EPROBE_DEFER;
} else {
pr_err("failed to create QMI socket\n");
ret = PTR_ERR(qmi->sock);
}
goto err_destroy_wq;
}