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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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467a44b037
Trying to use the at91_adc driver while not using device tree is ending up in a
kernel crash:
Unable to handle kernel NULL pointer dereference at virtual address 00000004
[...]
[<c01f3510>] (at91_adc_probe) from [<c0183828>] (platform_drv_probe+0x18/0x48)
[<c0183828>] (platform_drv_probe) from [<c01824a4>] (driver_probe_device+0x100/0x218)
[<c01824a4>] (driver_probe_device) from [<c0182648>] (__driver_attach+0x8c/0x90)
[<c0182648>] (__driver_attach) from [<c0180de4>] (bus_for_each_dev+0x58/0x88)
[<c0180de4>] (bus_for_each_dev) from [<c0181c7c>] (bus_add_driver+0xd4/0x1d4)
[<c0181c7c>] (bus_add_driver) from [<c0182c40>] (driver_register+0x78/0xf4)
[<c0182c40>] (driver_register) from [<c0008998>] (do_one_initcall+0xe8/0x14c)
[<c0008998>] (do_one_initcall) from [<c02f0b50>] (kernel_init_freeable+0xec/0x1b4)
[<c02f0b50>] (kernel_init_freeable) from [<c022acdc>] (kernel_init+0x8/0xe4)
[<c022acdc>] (kernel_init) from [<c0009670>] (ret_from_fork+0x14/0x24)
This is because the at91_adc_caps structure is mandatory but is not filled when
using platform_data. Correct that by using an id_table. It ensues that the
driver will not match "at91_adc" anymore but it was crashing anyway.
Fixes:
|
||
|---|---|---|
| .. | ||
| ad7266.c | ||
| ad7298.c | ||
| ad7476.c | ||
| ad7791.c | ||
| ad7793.c | ||
| ad7887.c | ||
| ad7923.c | ||
| ad_sigma_delta.c | ||
| at91_adc.c | ||
| exynos_adc.c | ||
| Kconfig | ||
| lp8788_adc.c | ||
| Makefile | ||
| max1363.c | ||
| mcp320x.c | ||
| mcp3422.c | ||
| nau7802.c | ||
| ti_am335x_adc.c | ||
| ti-adc081c.c | ||
| twl6030-gpadc.c | ||
| viperboard_adc.c | ||