linux-stable.git/arch/mips, branch v4.14.331

mmc: au1xmmc: force non-modular build and remove symbol_get usage

2023-09-23T08:46:52+00:00

commit d4a5c59a955bba96b273ec1a5885bada24c56979 upstream.

au1xmmc is split somewhat awkwardly into the main mmc subsystem driver,
and callbacks in platform_data that sit under arch/mips/ and are
always built in.  The latter than call mmc_detect_change through
symbol_get.  Remove the use of symbol_get by requiring the driver
to be built in.  In the future the interrupt handlers for card
insert/eject detection should probably be moved into the main driver,
and which point it can be built modular again.

Signed-off-by: Christoph Hellwig 
Acked-by: Manuel Lauss 
Reviewed-by: Arnd Bergmann 
[mcgrof: squashed in depends on MMC=y suggested by Arnd]
Signed-off-by: Luis Chamberlain 
Signed-off-by: Greg Kroah-Hartman

Revert "MIPS: Alchemy: fix dbdma2"

2023-09-02T07:21:32+00:00

This reverts commit 10130470bb0003b784f4656cc3ef2b9dc396ebdd which is
commit 2d645604f69f3a772d58ead702f9a8e84ab2b342 upstream.

It breaks the build, so should be dropped.

Reported-by: Guenter Roeck 
Link: https://lore.kernel.org/r/5b30ff73-46cb-1d1e-3823-f175dbfbd91b@roeck-us.net
Cc: Thomas Bogendoerfer 
Cc: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

MIPS: dec: prom: Address -Warray-bounds warning

2023-08-30T14:35:10+00:00

[ Upstream commit 7b191b9b55df2a844bd32d1d380f47a7df1c2896 ]

Zero-length arrays are deprecated, and we are replacing them with flexible
array members instead. So, replace zero-length array with flexible-array
member in struct memmap.

Address the following warning found after building (with GCC-13) mips64
with decstation_64_defconfig:
In function 'rex_setup_memory_region',
    inlined from 'prom_meminit' at arch/mips/dec/prom/memory.c:91:3:
arch/mips/dec/prom/memory.c:72:31: error: array subscript i is outside array bounds of 'unsigned char[0]' [-Werror=array-bounds=]
   72 |                 if (bm->bitmap[i] == 0xff)
      |                     ~~~~~~~~~~^~~
In file included from arch/mips/dec/prom/memory.c:16:
./arch/mips/include/asm/dec/prom.h: In function 'prom_meminit':
./arch/mips/include/asm/dec/prom.h:73:23: note: while referencing 'bitmap'
   73 |         unsigned char bitmap[0];

This helps with the ongoing efforts to globally enable -Warray-bounds.

This results in no differences in binary output.

Link: https://github.com/KSPP/linux/issues/79
Link: https://github.com/KSPP/linux/issues/323
Signed-off-by: Gustavo A. R. Silva 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Sasha Levin

mips/cpu: Switch to arch_cpu_finalize_init()

2023-08-08T17:48:23+00:00

commit 7f066a22fe353a827a402ee2835e81f045b1574d upstream

check_bugs() is about to be phased out. Switch over to the new
arch_cpu_finalize_init() implementation.

No functional change.

Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/r/20230613224545.312438573@linutronix.de
Signed-off-by: Daniel Sneddon 
Signed-off-by: Greg Kroah-Hartman

Remove DECnet support from kernel

2023-06-21T13:38:58+00:00

commit 1202cdd665315c525b5237e96e0bedc76d7e754f upstream.

DECnet is an obsolete network protocol that receives more attention
from kernel janitors than users. It belongs in computer protocol
history museum not in Linux kernel.

It has been "Orphaned" in kernel since 2010. The iproute2 support
for DECnet was dropped in 5.0 release. The documentation link on
Sourceforge says it is abandoned there as well.

Leave the UAPI alone to keep userspace programs compiling.
This means that there is still an empty neighbour table
for AF_DECNET.

The table of /proc/sys/net entries was updated to match
current directories and reformatted to be alphabetical.

Signed-off-by: Stephen Hemminger 
Acked-by: David Ahern 
Acked-by: Nikolay Aleksandrov 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

mips: Move initrd_start check after initrd address sanitisation.

2023-06-21T13:38:57+00:00

[ Upstream commit 4897a898a216058dec55e5e5902534e6e224fcdf ]

PAGE_OFFSET is technically a virtual address so when checking the value of
initrd_start against it we should make sure that it has been sanitised from
the values passed by the bootloader. Without this change, even with a bootloader
that passes correct addresses for an initrd, we are failing to load it on MT7621
boards, for example.

Signed-off-by: Liviu Dudau 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Sasha Levin

MIPS: Alchemy: fix dbdma2

2023-06-21T13:38:57+00:00

[ Upstream commit 2d645604f69f3a772d58ead702f9a8e84ab2b342 ]

Various fixes for the Au1200/Au1550/Au1300 DBDMA2 code:

- skip cache invalidation if chip has working coherency circuitry.
- invalidate KSEG0-portion of the (physical) data address.
- force the dma channel doorbell write out to bus immediately with
  a sync.

Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Sasha Levin

MIPS: fw: Allow firmware to pass a empty env

2023-05-17T09:11:38+00:00

commit ee1809ed7bc456a72dc8410b475b73021a3a68d5 upstream.

fw_getenv will use env entry to determine style of env,
however it is legal for firmware to just pass a empty list.

Check if first entry exist before running strchr to avoid
null pointer dereference.

Cc: stable@vger.kernel.org
Link: https://github.com/clbr/n64bootloader/issues/5
Signed-off-by: Jiaxun Yang 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Greg Kroah-Hartman

MIPS: Fix a compilation issue

2023-03-17T07:30:38+00:00

[ Upstream commit 109d587a4b4d7ccca2200ab1f808f43ae23e2585 ]

arch/mips/include/asm/mach-rc32434/pci.h:377:
cc1: error: result of ‘-117440512 << 16’ requires 44 bits to represent, but ‘int’ only has 32 bits [-Werror=shift-overflow=]

All bits in KORINA_STAT are already at the correct position, so there is
no addtional shift needed.

Signed-off-by: xurui 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Sasha Levin

mips: fix syscall_get_nr

2023-03-11T15:26:48+00:00

commit 85cc91e2ba4262a602ec65e2b76c4391a9e60d3d upstream.

The implementation of syscall_get_nr on mips used to ignore the task
argument and return the syscall number of the calling thread instead of
the target thread.

The bug was exposed to user space by commit 201766a20e30f ("ptrace: add
PTRACE_GET_SYSCALL_INFO request") and detected by strace test suite.

Link: https://github.com/strace/strace/issues/235
Fixes: c2d9f1775731 ("MIPS: Fix syscall_get_nr for the syscall exit tracing.")
Cc:  # v3.19+
Co-developed-by: Dmitry V. Levin 
Signed-off-by: Dmitry V. Levin 
Signed-off-by: Elvira Khabirova 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Greg Kroah-Hartman