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usb: chipidea: properly handle host or gadget initialization failure 

If ci_hdrc_host_init() or ci_hdrc_gadget_init() returns error and the
error != -ENXIO, as Peter pointed out, "it stands for initialization
for host or gadget has failed", so we'd better return failure rather
continue.

And before destroying the otg, i.e ci_hdrc_otg_destroy(ci), we should
also check ci->roles[CI_ROLE_GADGET].

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
This commit is contained in:
Jisheng Zhang 2017-04-26 16:59:34 +08:00 committed by Peter Chen
parent 2ea659a9ef
commit c4a0bbbdb7
1 changed files with 21 additions and 8 deletions
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29
drivers/usb/chipidea/core.c
View File

@ -818,7 +818,7 @@ static inline void ci_role_destroy(struct ci_hdrc *ci)
{
ci_hdrc_gadget_destroy(ci);
ci_hdrc_host_destroy(ci);
if (ci->is_otg)
if (ci->is_otg && ci->roles[CI_ROLE_GADGET])
ci_hdrc_otg_destroy(ci);
}
@ -977,27 +977,35 @@ static int ci_hdrc_probe(struct platform_device *pdev)
/* initialize role(s) before the interrupt is requested */
if (dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_HOST) {
ret = ci_hdrc_host_init(ci);
if (ret)
dev_info(dev, "doesn't support host\n");
if (ret) {
if (ret == -ENXIO)
dev_info(dev, "doesn't support host\n");
else
goto deinit_phy;
}
}
if (dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_PERIPHERAL) {
ret = ci_hdrc_gadget_init(ci);
if (ret)
dev_info(dev, "doesn't support gadget\n");
if (ret) {
if (ret == -ENXIO)
dev_info(dev, "doesn't support gadget\n");
else
goto deinit_host;
}
}
if (!ci->roles[CI_ROLE_HOST] && !ci->roles[CI_ROLE_GADGET]) {
dev_err(dev, "no supported roles\n");
ret = -ENODEV;
goto deinit_phy;
goto deinit_gadget;
}
if (ci->is_otg && ci->roles[CI_ROLE_GADGET]) {
ret = ci_hdrc_otg_init(ci);
if (ret) {
dev_err(dev, "init otg fails, ret = %d\n", ret);
goto stop;
goto deinit_gadget;
}
}
@ -1067,7 +1075,12 @@ static int ci_hdrc_probe(struct platform_device *pdev)
remove_debug:
dbg_remove_files(ci);
stop:
ci_role_destroy(ci);
if (ci->is_otg && ci->roles[CI_ROLE_GADGET])
ci_hdrc_otg_destroy(ci);
deinit_gadget:
ci_hdrc_gadget_destroy(ci);
deinit_host:
ci_hdrc_host_destroy(ci);
deinit_phy:
ci_usb_phy_exit(ci);
ulpi_exit: