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drivers: Fix boot problem on SuperH

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SuperH images crash too eearly to display any console output. Bisect
points to commit 507fd01d53 ("drivers: move the early platform device
support to arch/sh"). An analysis of that patch suggests that
early_platform_cleanup() is now called at the wrong time. Restoring its
call point fixes the problem.

Cc: Bartosz Golaszewski <brgl@bgdev.pl>
Fixes: 507fd01d53 ("drivers: move the early platform device support to arch/sh")
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Rob Landley <rob@landley.net>
Link: https://lore.kernel.org/r/20191203205852.15659-1-linux@roeck-us.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Guenter Roeck 2019-12-03 12:58:52 -08:00 • committed by Greg Kroah-Hartman
parent 51ba8b3a0e
commit eecd37e105
2 changed files with 6 additions and 9 deletions
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11
arch/sh/drivers/platform_early.c
View file

@ -325,9 +325,9 @@ int __init sh_early_platform_driver_probe(char *class_str,
} }
/** /**
* sh_early_platform_cleanup - clean up early platform code * early_platform_cleanup - clean up early platform code
*/ */
static int __init sh_early_platform_cleanup(void) void __init early_platform_cleanup(void)
{ {
struct platform_device *pd, *pd2; struct platform_device *pd, *pd2;
@ -337,11 +337,4 @@ static int __init sh_early_platform_cleanup(void)
list_del(&pd->dev.devres_head); list_del(&pd->dev.devres_head);
memset(&pd->dev.devres_head, 0, sizeof(pd->dev.devres_head)); memset(&pd->dev.devres_head, 0, sizeof(pd->dev.devres_head));
} }
return 0;
} }
/*
* This must happen once after all early devices are probed but before probing
* real platform devices.
*/
subsys_initcall(sh_early_platform_cleanup);

4
drivers/base/platform.c
View file

@ -1325,10 +1325,14 @@ struct device *platform_find_device_by_driver(struct device *start,
} }
EXPORT_SYMBOL_GPL(platform_find_device_by_driver); EXPORT_SYMBOL_GPL(platform_find_device_by_driver);
void __weak __init early_platform_cleanup(void) { }
int __init platform_bus_init(void) int __init platform_bus_init(void)
{ {
int error; int error;
early_platform_cleanup();
error = device_register(&platform_bus); error = device_register(&platform_bus);
if (error) { if (error) {
put_device(&platform_bus); put_device(&platform_bus);