OpenCloudOS-Kernel/drivers
Finn Thain b7629ce6f4 nubus: Remove proc entries before adding them
The config ROMs on some Nubus cards contain mistakes such as resource
duplication. This results in a warning from proc_register():

    NuBus: Scanning NuBus slots.
    ------------[ cut here ]------------
    WARNING: CPU: 0 PID: 1 at fs/proc/generic.c:376 proc_register+0xbc/0xda
    proc_dir_entry '24/5' already registered
    Modules linked in:
    CPU: 0 PID: 1 Comm: swapper Not tainted 6.1.0-5-m68k #1  Debian 6.1.12-1
    Stack from 00829d18:
            00829d18 00451507 00451507 00000000 00000009 0038c57c 00451507 00386bae
            00442945 0045f062 00000178 00868580 00868f50 00386c42 0045f062 00000178
            00166fc8 00000009 00000000 00829d78 008685e4 0037f9ec 00000025 00248808
            0045f0df 00829d94 00166fc8 0045f062 00000178 00000009 0045f0df 008689e4
            008685e4 fafe3a20 00868980 00829df3 00829e32 00000024 00829dc0 00167332
            00868980 00868580 00829e40 00248d36 00829df3 00008124 00868980 00248b0c
    Call Trace: [<0038c57c>] dump_stack+0xc/0x10
     [<00386bae>] __warn+0x70/0xbc
     [<00386c42>] warn_slowpath_fmt+0x48/0x66
     [<00166fc8>] proc_register+0xbc/0xda
     [<0037f9ec>] memcmp+0x0/0x56
     [<00248808>] nubus_get_rsrc_str+0x0/0x5e
     [<00166fc8>] proc_register+0xbc/0xda
     [<00167332>] proc_create_single_data+0x40/0x48
     [<00248d36>] nubus_proc_add_rsrc_mem+0x68/0xa4
     [<00008124>] amiga_mksound+0xb8/0xc8
     [<00248b0c>] nubus_proc_rsrc_show+0x0/0xa4
     [<00386180>] memset+0x0/0x94
     [<0024864a>] nubus_readdir+0x0/0x66
     [<00560f35>] nubus_get_vendorinfo.isra.0+0x87/0x10e
     [<00560fb4>] nubus_get_vendorinfo.isra.0+0x106/0x10e
     [<00248d72>] nubus_proc_add_rsrc+0x0/0x8e
     [<001f6f50>] __dynamic_pr_debug+0x0/0x96
     [<0038741e>] _printk+0x0/0x18
     [<0016fafe>] kernfs_link_sibling+0x9a/0xaa
     [<00561cb0>] nubus_init+0x660/0x79c
     [<0037f7c6>] strcpy+0x0/0x1c
     [<0003f58c>] parse_args+0x0/0x308
     [<00002104>] do_one_initcall+0x0/0x184
     [<00561650>] nubus_init+0x0/0x79c
     [<00010000>] frc1_dst+0xe/0x14
     [<00002172>] do_one_initcall+0x6e/0x184
     [<0037f7c6>] strcpy+0x0/0x1c
     [<0003f58c>] parse_args+0x0/0x308
     [<00002104>] do_one_initcall+0x0/0x184
     [<0054b25c>] kernel_init_freeable+0x192/0x19c
     [<00561650>] nubus_init+0x0/0x79c
     [<0038c6c4>] kernel_init+0x0/0xec
     [<0038c6d8>] kernel_init+0x14/0xec
     [<0038c6c4>] kernel_init+0x0/0xec
     [<0000297c>] ret_from_kernel_thread+0xc/0x14

    ---[ end trace 0000000000000000 ]---

This particular card (a Radius video card) contains a duplicated resource
hence the /proc/bus/nubus/a/1/24/5 entry got registered twice.
(A date resource has ID 5, the vendor info directory has ID 24)

The solution for this is to remove a potentially pre-existing entry before
adding the procfs entry for the resource.

Reported-and-tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@linux-m68k.org>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/dd1b560bbe426b351cdbb3bbf89414753c3d0117.1679446472.git.fthain@linux-m68k.org
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2023-05-22 13:51:48 +02:00
..
accel Driver core changes for 6.4-rc1 2023-04-27 11:53:57 -07:00
accessibility
acpi ACPI: video: Remove acpi_backlight=video quirk for Lenovo ThinkPad W530 2023-05-04 20:23:41 +02:00
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firmware EFI updates for v6.4: 2023-04-29 17:42:33 -07:00
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i2c i2c: gxp: fix build failure without CONFIG_I2C_SLAVE 2023-05-03 17:27:29 +02:00
i3c i3c: ast2600: set variable ast2600_i3c_ops storage-class-specifier to static 2023-04-30 23:50:26 +02:00
idle intel_idle: mark few variables as __read_mostly 2023-04-27 19:37:36 +02:00
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infiniband v6.4 merge window RDMA pull request 2023-04-29 17:21:24 -07:00
input Input updates for 6.4 merge window: 2023-05-01 17:18:56 -07:00
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iommu IOMMU Updates for Linux 6.4 2023-04-30 13:00:38 -07:00
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leds - New Drivers 2023-05-02 10:36:02 -07:00
macintosh powerpc updates for 6.4 2023-04-28 16:24:32 -07:00
mailbox - mailbox api: allow direct registration to a channel 2023-05-07 10:17:33 -07:00
mcb mcb-lpc: Reallocate memory region to avoid memory overlapping 2023-04-20 14:24:01 +02:00
md for-6.4/block-2023-05-06 2023-05-06 08:28:58 -07:00
media IOMMU Updates for Linux 6.4 2023-04-30 13:00:38 -07:00
memory ARM: SoC drivers for v6.4 2023-04-25 12:02:16 -07:00
memstick
message Objtool changes for v6.4: 2023-04-28 14:02:54 -07:00
mfd - New Drivers 2023-05-02 10:41:31 -07:00
misc Objtool changes for v6.4: 2023-04-28 14:02:54 -07:00
mmc TTY/Serial changes for 6.4-rc1 2023-04-27 11:46:26 -07:00
most
mtd This pull request contains updates for UBI and UBIFS 2023-05-03 18:58:59 -07:00
mux
net Including fixes from netfilter. 2023-05-05 19:12:01 -07:00
nfc drivers: nfc: nfcsim: remove return value check of `dev_dir` 2023-04-24 18:12:42 -07:00
ntb
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nvdimm
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nvmem modules-6.4-rc1 2023-04-27 16:36:55 -07:00
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opp Devicetree updates for v6.4, part 2: 2023-04-27 10:09:05 -07:00
parisc parisc: Replace regular spinlock with spin_trylock on panic path 2023-05-03 17:43:26 +02:00
parport
pci cxl for v6.4 2023-04-30 11:51:51 -07:00
pcmcia
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phy phy fixes for 6.4 2023-05-05 11:57:29 -07:00
pinctrl Pin control bulk changes for the v6.4 kernel: 2023-05-02 15:40:41 -07:00
platform modules-6.4-rc1 2023-04-27 16:36:55 -07:00
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pps
ps3
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pwm pwm: Changes for v6.4-rc1 2023-05-03 11:25:01 -07:00
rapidio Mainly singleton patches all over the place. Series of note are: 2023-04-27 19:57:00 -07:00
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regulator modules-6.4-rc1 2023-04-27 16:36:55 -07:00
remoteproc Mainly singleton patches all over the place. Series of note are: 2023-04-27 19:57:00 -07:00
reset Nothing looks out of the ordinary in this batch of clk driver updates. There 2023-04-29 17:29:39 -07:00
rpmsg Driver core changes for 6.4-rc1 2023-04-27 11:53:57 -07:00
rtc - New Drivers 2023-05-02 10:41:31 -07:00
s390 s390 updates for the 6.4 merge window 2023-04-30 11:43:31 -07:00
sbus Driver core changes for 6.4-rc1 2023-04-27 11:53:57 -07:00
scsi SCSI misc on 20230506 2023-05-06 08:37:28 -07:00
sh
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slimbus
soc modules-6.4-rc1 2023-04-27 16:36:55 -07:00
soundwire
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ssb
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thermal thermal: intel: powerclamp: Fix NULL pointer access issue 2023-05-04 20:30:18 +02:00
thunderbolt thunderbolt: Changes for v6.4 merge window 2023-04-19 11:42:44 +02:00
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video - Fix-ups 2023-05-02 10:46:11 -07:00
virt Devicetree updates for v6.4, part 2: 2023-04-27 10:09:05 -07:00
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watchdog linux-watchdog 6.4-rc1 tag 2023-05-04 18:33:56 -07:00
xen xen: branch for v6.4-rc1 2023-04-27 17:27:06 -07:00
zorro
Kconfig
Makefile