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usb: musb: Simplify cable state handling
Simplify cable state handling a bit to leave out duplicated code. We are just scheduling work and showing state info if a recheck is needed. No intended functional changes. Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: Andreas Kemnade <andreas@kemnade.info> Cc: Bhushan Shah <bshah@kde.org> Cc: Drew Fustini <drew@beagleboard.org> Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Link: https://lore.kernel.org/r/20210604080536.12185-1-tony@atomide.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 20 additions and 20 deletions
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@ -1984,6 +1984,20 @@ ATTRIBUTE_GROUPS(musb);
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#define MUSB_QUIRK_A_DISCONNECT_19 ((3 << MUSB_DEVCTL_VBUS_SHIFT) | \
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MUSB_DEVCTL_SESSION)
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static bool musb_state_needs_recheck(struct musb *musb, const char *desc)
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{
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if (musb->quirk_retries && !musb->flush_irq_work) {
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musb_dbg(musb, desc);
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schedule_delayed_work(&musb->irq_work,
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msecs_to_jiffies(1000));
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musb->quirk_retries--;
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return true;
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}
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return false;
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}
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/*
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* Check the musb devctl session bit to determine if we want to
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* allow PM runtime for the device. In general, we want to keep things
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@ -2004,32 +2018,18 @@ static void musb_pm_runtime_check_session(struct musb *musb)
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MUSB_DEVCTL_HR;
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switch (devctl & ~s) {
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case MUSB_QUIRK_B_DISCONNECT_99:
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if (musb->quirk_retries && !musb->flush_irq_work) {
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musb_dbg(musb, "Poll devctl in case of suspend after disconnect\n");
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schedule_delayed_work(&musb->irq_work,
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msecs_to_jiffies(1000));
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musb->quirk_retries--;
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}
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musb_state_needs_recheck(musb,
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"Poll devctl in case of suspend after disconnect\n");
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break;
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case MUSB_QUIRK_B_INVALID_VBUS_91:
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if (musb->quirk_retries && !musb->flush_irq_work) {
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musb_dbg(musb,
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"Poll devctl on invalid vbus, assume no session");
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schedule_delayed_work(&musb->irq_work,
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msecs_to_jiffies(1000));
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musb->quirk_retries--;
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if (musb_state_needs_recheck(musb,
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"Poll devctl on invalid vbus, assume no session"))
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return;
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}
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fallthrough;
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case MUSB_QUIRK_A_DISCONNECT_19:
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if (musb->quirk_retries && !musb->flush_irq_work) {
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musb_dbg(musb,
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"Poll devctl on possible host mode disconnect");
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schedule_delayed_work(&musb->irq_work,
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msecs_to_jiffies(1000));
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musb->quirk_retries--;
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if (musb_state_needs_recheck(musb,
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"Poll devctl on possible host mode disconnect"))
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return;
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}
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if (!musb->session)
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break;
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musb_dbg(musb, "Allow PM on possible host mode disconnect");
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