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| author | Sahaj Chaudhari <sahaj123.sc@gmail.com> | 2026-10-18 21:40:42 +0530 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> | 2026-10-20 15:26:05 +0200 |
| commit | a38bf551726a21c9bcc001b02164f30378b64b64 (patch) | |
| tree | 92d0c162788d285cbe8e16383b6243fb1658c4eb /tools/perf/scripts/python/bin/stackcollapse-record | |
| parent | 800d7627f552bbf602a1736b638aee0ada3fbf87 (diff) | |
| download | lwn-a38bf551726a21c9bcc001b02164f30378b64b64.tar.gz lwn-a38bf551726a21c9bcc001b02164f30378b64b64.zip | |
gpio: pca953x: Preserve wakeup accounting on parent IRQ failure
pca953x_irq_set_wake() updates wakeup_path before asking the parent
IRQ controller to change its wake state. If irq_set_irq_wake() fails,
the IRQ core rolls back its wake state but the driver's counter remains
changed.
A failed enable can therefore leave the expander marked as part of the
wakeup path when no child IRQ has successfully enabled wakeup. A failed
disable can make the driver stop retaining power even though wakeup is
still enabled. The suspend and resume paths use this counter to decide
whether to disable or enable the regulator.
Update wakeup_path only after the parent operation succeeds, leaving it
unchanged on error.
Fixes: f70fbc15bae2 ("gpio: pca953x: Configure wake-up path when wake-up is enabled")
Cc: stable@vger.kernel.org
Signed-off-by: Sahaj Chaudhari <sahaj123.sc@gmail.com>
Fixes: f70fbc15bae2c89f ("gpio: pca953x: Configure wake-up path when wake-up is enabled")
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20261018161042.3298045-1-sahaj123.sc@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-record')
0 files changed, 0 insertions, 0 deletions