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| author | Paolo Bonzini <pbonzini@redhat.com> | 2023-04-26 15:46:52 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2023-04-26 15:46:52 -0400 |
| commit | 4f382a79a66b1a926e30f6d89295fc8fe2c4a86e (patch) | |
| tree | 0580196e599bdee587bc92fc913853528bb69bc5 /drivers/usb/chipidea/core.c | |
| parent | b3c129e33e91fa3dc3171f45b90edb35e60dbc33 (diff) | |
| parent | 36fe1b29b3cae48f781011abd5a0b9e938f5b35f (diff) | |
Merge tag 'kvmarm-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 updates for 6.4
- Numerous fixes for the pathological lock inversion issue that
plagued KVM/arm64 since... forever.
- New framework allowing SMCCC-compliant hypercalls to be forwarded
to userspace, hopefully paving the way for some more features
being moved to VMMs rather than be implemented in the kernel.
- Large rework of the timer code to allow a VM-wide offset to be
applied to both virtual and physical counters as well as a
per-timer, per-vcpu offset that complements the global one.
This last part allows the NV timer code to be implemented on
top.
- A small set of fixes to make sure that we don't change anything
affecting the EL1&0 translation regime just after having having
taken an exception to EL2 until we have executed a DSB. This
ensures that speculative walks started in EL1&0 have completed.
- The usual selftest fixes and improvements.
Diffstat (limited to 'drivers/usb/chipidea/core.c')
| -rw-r--r-- | drivers/usb/chipidea/core.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 27c601296130..281fc51720ce 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -984,9 +984,16 @@ static ssize_t role_store(struct device *dev, strlen(ci->roles[role]->name))) break; - if (role == CI_ROLE_END || role == ci->role) + if (role == CI_ROLE_END) return -EINVAL; + mutex_lock(&ci->mutex); + + if (role == ci->role) { + mutex_unlock(&ci->mutex); + return n; + } + pm_runtime_get_sync(dev); disable_irq(ci->irq); ci_role_stop(ci); @@ -995,6 +1002,7 @@ static ssize_t role_store(struct device *dev, ci_handle_vbus_change(ci); enable_irq(ci->irq); pm_runtime_put_sync(dev); + mutex_unlock(&ci->mutex); return (ret == 0) ? n : ret; } @@ -1030,6 +1038,7 @@ static int ci_hdrc_probe(struct platform_device *pdev) return -ENOMEM; spin_lock_init(&ci->lock); + mutex_init(&ci->mutex); ci->dev = dev; ci->platdata = dev_get_platdata(dev); ci->imx28_write_fix = !!(ci->platdata->flags & |