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rtc: omap: fix potential crash on power off

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Do not set the system power-off callback and omap power-off rtc pointer
until we're done setting up our device to avoid leaving stale pointers
around after a late probe error.

Fixes: 97ea1906b3 ("rtc: omap: Support ext_wakeup configuration")
Cc: stable <[email protected]>     # 4.9
Cc: Marcin Niestroj <[email protected]>
Cc: Tony Lindgren <[email protected]>
Signed-off-by: Johan Hovold <[email protected]>
Acked-by: Tony Lindgren <[email protected]>
Reviewed-by: Marcin Niestroj <[email protected]>
Signed-off-by: Alexandre Belloni <[email protected]>
This commit is contained in:
Johan Hovold 2018-07-04 11:05:55 +02:00 • committed by Alexandre Belloni
commit 5c8b84f410
1 changed files with 7 additions and 7 deletions
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14
drivers/rtc/rtc-omap.c
View file

@ -861,13 +861,6 @@ static int omap_rtc_probe(struct platform_device *pdev)
goto err;
}
if (rtc->is_pmic_controller) {
if (!pm_power_off) {
omap_rtc_power_off_rtc = rtc;
pm_power_off = omap_rtc_power_off;
}
}
/* Support ext_wakeup pinconf */
rtc_pinctrl_desc.name = dev_name(&pdev->dev);
@ -884,6 +877,13 @@ static int omap_rtc_probe(struct platform_device *pdev)
rtc_nvmem_register(rtc->rtc, &omap_rtc_nvmem_config);
if (rtc->is_pmic_controller) {
if (!pm_power_off) {
omap_rtc_power_off_rtc = rtc;
pm_power_off = omap_rtc_power_off;
}
}
return 0;
err: