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| author | Roy Luo <royluo@google.com> | 2024-09-13 23:21:45 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-10-04 15:32:39 +0200 |
| commit | 897e13a8f9a23576eeacb95075fdded97b197cc3 (patch) | |
| tree | 456c6e52743aeff2707000cdf5d58968dbe25e44 /block/bsg-lib.c | |
| parent | a6555cb1cb69db479d0760e392c175ba32426842 (diff) | |
usb: dwc3: re-enable runtime PM after failed resume
When dwc3_resume_common() returns an error, runtime pm is left in
suspended and disabled state in dwc3_resume(). Since the device
is suspended, its parent devices (like the power domain or glue
driver) could also be suspended and may have released resources
that dwc requires. Consequently, calling dwc3_suspend_common() in
this situation could result in attempts to access unclocked or
unpowered registers.
To prevent these problems, runtime PM should always be re-enabled,
even after failed resume attempts. This ensures that
dwc3_suspend_common() is skipped in such cases.
Fixes: 68c26fe58182 ("usb: dwc3: set pm runtime active before resume common")
Cc: stable@vger.kernel.org
Signed-off-by: Roy Luo <royluo@google.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20240913232145.3507723-1-royluo@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'block/bsg-lib.c')
0 files changed, 0 insertions, 0 deletions