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6b9eaa61ff
ipa_remove() takes a runtime PM reference before accessing IPA hardware
during teardown. If a concurrent modem start or stop keeps
ipa_modem_stop() busy across both attempts, the callback intentionally
returns without releasing the remaining resources because proceeding
with teardown could crash. That return also skips the matching
pm_runtime_put_noidle(), leaving the callback's usage-count reference
held.
Drop only this runtime PM reference before returning.
pm_runtime_put_noidle() does not request an idle transition, so the
hardware and resources retained on this exceptional path remain
untouched while the usage count stays balanced.
This issue was found by a static analysis checker and confirmed by
manual source review.
Fixes:
|
||
|---|---|---|
| .. | ||
| data | ||
| reg | ||
| gsi_private.h | ||
| gsi_reg.c | ||
| gsi_reg.h | ||
| gsi_trans.c | ||
| gsi_trans.h | ||
| gsi.c | ||
| gsi.h | ||
| ipa_cmd.c | ||
| ipa_cmd.h | ||
| ipa_data.h | ||
| ipa_endpoint.c | ||
| ipa_endpoint.h | ||
| ipa_gsi.c | ||
| ipa_gsi.h | ||
| ipa_interrupt.c | ||
| ipa_interrupt.h | ||
| ipa_main.c | ||
| ipa_mem.c | ||
| ipa_mem.h | ||
| ipa_modem.c | ||
| ipa_modem.h | ||
| ipa_power.c | ||
| ipa_power.h | ||
| ipa_qmi_msg.c | ||
| ipa_qmi_msg.h | ||
| ipa_qmi.c | ||
| ipa_qmi.h | ||
| ipa_reg.c | ||
| ipa_reg.h | ||
| ipa_resource.c | ||
| ipa_resource.h | ||
| ipa_smp2p.c | ||
| ipa_smp2p.h | ||
| ipa_sysfs.c | ||
| ipa_sysfs.h | ||
| ipa_table.c | ||
| ipa_table.h | ||
| ipa_uc.c | ||
| ipa_uc.h | ||
| ipa_version.h | ||
| ipa.h | ||
| Kconfig | ||
| Makefile | ||
| reg.h | ||