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Call eth_random_addr to generate a random mac address if we cannot load
the mac address from the efuses.
Do not use a constant mac address as fallback. This may create conflicts
if we have several r8188eu devices on the network.
Suggested-by: Joe Perches <joe@perches.com>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Reviewed-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220713075552.140927-1-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use kmalloc to allocate the efuse buffer in ReadAdapterInfo8188EU and
free it on exit. This is better than using a 512 byte array on the stack.
It's ok to drop the __aligned(4) qualifier. kmalloc aligns to
ARCH_KMALLOC_MINALIGN, this is at least 8 bytes.
Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Suggested-by: Larry Finger <Larry.Finger@lwfinger.net>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220713075804.140986-1-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove the HW_VAR_MLME_SITESURVEY case from SetHwReg8188EU() and move
the functionality to two new functions in rtw_mlme_ext.c. This is part
of the ongoing effort to get rid of SetHwReg8188EU().
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220711174417.10721-1-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The only caller of efuse_read_phymap_from_txpktbuf sets bcnhead to 0.
Remove this function parameter and simplify the function body.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-15-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The efuse_utilized variable in function efuse_phymap_to_logical is
written to but never read. Remove it.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-14-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The _offset parameter of iol_read_efuse is always 0. Remove the
parameter and use 0 in the function body.
We can now replace the bytewise copy from efuseTbl to pbuf with memcpy.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-13-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The offset parameter of iol_read_efuse is always 0. Remove the
parameter and use 0 in the function body.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-12-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The offset parameter of rtl8188e_ReadEFuse is always 0. Remove the
parameter and use 0 in the function body.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-11-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The only caller of iol_read_efuse sets the txpktbuf_bndy parameter to 0.
Remove the parameter from iol_read_efuse and use 0 in the function body.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-10-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The rtl8188e_ReadEFuse function is just a wrapper to call ReadEFuseByIC.
Copy ReadEFuseByIC into rtl8188e_ReadEFuse and remove ReadEFuseByIC.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-9-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use memcpy to store the fallback mac address in eeprom->mac_addr. Do not
copy byte by byte.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-8-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If BOOT_FROM_EEPROM is set, efuse_buf is not initialised before it is
passed to functions that read from it.
The buffer will be filled with 0x00 in this case like all local variables.
However, the parsing functions expect the buffer to be filled with 0xFF if
reading eeprom/efuse data failed. Fill the buffer with 0xFF before we try
to read the data.
Please note that this problem existed before we started using a local
buffer. Adapter->eeprompriv->efuse_eeprom_data was allocated as a part of
struct adapter by a vzalloc call in rtw_usb_if1_init.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-7-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The efuse_eeprom_data array in struct eeprom_priv is used only by
ReadAdapterInfo8188EU. We can remove efuse_eeprom_data and use a local
buffer instead.
Use EFUSE_MAP_LEN_88E as buffer size. Its value is the same as
HWSET_MAX_SIZE_512. The functions that access the buffer use
EFUSE_MAP_LEN_88E for its size.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-6-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Merge the EFUSE_ShadowMapUpdate function into ReadAdapterInfo8188EU, which
is the only caller.
Merging the two functions makes it clearer that eeprom->efuse_eeprom_data
is in fact a temporary buffer that stores info read from efuses.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-5-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove prototypes for non-existing eeprom functions. It seems that r8188eu
has efuses but no eeprom.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-4-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The EepromOrEfuse flag in struct eeprom_priv is used only in the
ReadAdapterInfo8188EU function. We can remove EepromOrEfuse from struct
eeprom_priv.
As the meaning of EepromOrEfuse isn't obvious, there is a macro
is_boot_from_eeprom that's used for checking the value. We don't need the
macro, writing the check as !(eeValue & BOOT_FROM_EEPROM) makes it clear
what is checked.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-3-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove some eeprom-related defines which are not used by the r8188eu
driver. This driver uses BOOT_FROM_EEPROM and EEPROM_EN instead of the
defines that this patch removes.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-2-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove the HW_VAR_DM_FUNC_CLR case from SetHwReg8188EU() and move its
functionality to a static function. This is part of the ongoing effort
to get rid of SetHwReg8188EU().
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220709094458.9578-6-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove the HW_VAR_DM_FUNC_RESET case from SetHwReg8188EU() and move
its functionality to a static function. This is part of the ongoing
effort to get rid of SetHwReg8188EU().
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220709094458.9578-5-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove the HW_VAR_DM_FLAG case from SetHwReg8188EU() and move its
functionality to a static function. This is part of the ongoing
effort to get rid of SetHwReg8188EU().
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220709094458.9578-4-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove the HW_VAR_DM_FUNC_OP case from SetHwReg8188EU() and move the
functionality to the functions that call SetHwReg8188EU() with
HW_VAR_DM_FUNC_OP. This is part of the ongoing effort to get rid of
SetHwReg8188EU().
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220709094458.9578-3-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove the HW_VAR_BASIC_RATE case from SetHwReg8188EU() and move the
functionality to a separate function. This is part of the ongoing
effort to get rid of SetHwReg8188EU().
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220709094458.9578-2-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There are sleep in atomic context bugs when dm_fsync_timer_callback is
executing. The root cause is that the memory allocation functions with
GFP_KERNEL or GFP_NOIO parameters are called in dm_fsync_timer_callback
which is a timer handler. The call paths that could trigger bugs are
shown below:
(interrupt context)
dm_fsync_timer_callback
write_nic_byte
kzalloc(sizeof(data), GFP_KERNEL); //may sleep
usb_control_msg
kmalloc(.., GFP_NOIO); //may sleep
write_nic_dword
kzalloc(sizeof(data), GFP_KERNEL); //may sleep
usb_control_msg
kmalloc(.., GFP_NOIO); //may sleep
This patch uses delayed work to replace timer and moves the operations
that may sleep into the delayed work in order to mitigate bugs.
Fixes: 8fc8598e61f6 ("Staging: Added Realtek rtl8192u driver to staging")
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Link: https://lore.kernel.org/r/20220710103002.63283-1-duoming@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is a collection of three fixes for small annoyances.
Two of these are already pending in other trees, but I really don't want
to release another -rc with these issues pending, so I picked up the
patches for these things directly. We'll end up with duplicate commits
eventually, I prefer that over having these issues pending.
The third one is just me getting rid of another BUG_ON() just because it
was reported and I dislike those things so much.
* merge 'hot-fixes' branch:
ida: don't use BUG_ON() for debugging
drm/aperture: Run fbdev removal before internal helpers
ptrace: fix clearing of JOBCTL_TRACED in ptrace_unfreeze_traced()
This is another old BUG_ON() that just shouldn't exist (see also commit
a382f8fee42c: "signal handling: don't use BUG_ON() for debugging").
In fact, as Matthew Wilcox points out, this condition shouldn't really
even result in a warning, since a negative id allocation result is just
a normal allocation failure:
"I wonder if we should even warn here -- sure, the caller is trying to
free something that wasn't allocated, but we don't warn for
kfree(NULL)"
and goes on to point out how that current error check is only causing
people to unnecessarily do their own index range checking before freeing
it.
This was noted by Itay Iellin, because the bluetooth HCI socket cookie
code does *not* do that range checking, and ends up just freeing the
error case too, triggering the BUG_ON().
The HCI code requires CAP_NET_RAW, and seems to just result in an ugly
splat, but there really is no reason to BUG_ON() here, and we have
generally striven for allocation models where it's always ok to just do
free(alloc());
even if the allocation were to fail for some random reason (usually
obviously that "random" reason being some resource limit).
Fixes: 88eca0207cf1 ("ida: simplified functions for id allocation")
Reported-by: Itay Iellin <ieitayie@gmail.com>
Suggested-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Here is a single staging driver fix for a reported problem that showed
up in 5.19-rc1 in the wlan-ng driver. It has been in linux-next for a
week with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fix from Greg KH:
"Here is a single staging driver fix for a reported problem that showed
up in 5.19-rc1 in the wlan-ng driver. It has been in linux-next for a
week with no reported problems"
* tag 'staging-5.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging/wlan-ng: get the correct struct hfa384x in work callback
Here are 4 small char/misc driver fixes for 5.19-rc6 to resolve some
reported issues. They only affect 2 drivers:
- rtsx_usb: fix for of-reported DMA warning error, the driver
was handling memory buffers in odd ways, it has now been fixed
up to be much simpler and correct by Shuah.
- at25 eeprom driver bugfix for reported problem
All of these have been in linux-next for a week with no reported
problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are four small char/misc driver fixes for 5.19-rc6 to resolve
some reported issues. They only affect two drivers:
- rtsx_usb: fix for of-reported DMA warning error, the driver was
handling memory buffers in odd ways, it has now been fixed up to be
much simpler and correct by Shuah.
- at25 eeprom driver bugfix for reported problem
All of these have been in linux-next for a week with no reported
problems"
* tag 'char-misc-5.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
misc: rtsx_usb: set return value in rsp_buf alloc err path
misc: rtsx_usb: use separate command and response buffers
misc: rtsx_usb: fix use of dma mapped buffer for usb bulk transfer
eeprom: at25: Rework buggy read splitting
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Merge tag 'io_uring-5.19-2022-07-09' of git://git.kernel.dk/linux-block
Pull io_uring fix from Jens Axboe:
"A single fix for an issue that came up yesterday that we should plug
for -rc6.
This is a regression introduced in this cycle"
* tag 'io_uring-5.19-2022-07-09' of git://git.kernel.dk/linux-block:
io_uring: check that we have a file table when allocating update slots
- Adjust gen_compile_commands.py to the format change of *.mod files
- Remove unused macro in scripts/Makefile.modinst
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Merge tag 'kbuild-fixes-v5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- Adjust gen_compile_commands.py to the format change of *.mod files
- Remove unused macro in scripts/Makefile.modinst
* tag 'kbuild-fixes-v5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: remove unused cmd_none in scripts/Makefile.modinst
gen_compile_commands: handle multiple lines per .mod file
- Gracefully handle failure to request MMIO resources in the GICv3 driver
- Make a static key static in the Apple AIC driver
- Fix the Xilinx intc driver dependency on OF_ADDRESS
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Merge tag 'irq_urgent_for_v5.19_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Borislav Petkov:
- Gracefully handle failure to request MMIO resources in the GICv3
driver
- Make a static key static in the Apple AIC driver
- Fix the Xilinx intc driver dependency on OF_ADDRESS
* tag 'irq_urgent_for_v5.19_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/apple-aic: Make symbol 'use_fast_ipi' static
irqchip/xilinx: Add explicit dependency on OF_ADDRESS
irqchip/gicv3: Handle resource request failure consistently
failures where the hypervisor verifies page tables and uninitialized
data in that range leads to bogus failures in those checks
- Add any potential setup_data entries supplied at boot to the identity
pagetable mappings to prevent kexec kernel boot failures. Usually, this
is not a problem for the normal kernel as those mappings are part of
the initially mapped 2M pages but if kexec gets to allocate the second
kernel somewhere else, those setup_data entries need to be mapped there
too.
- Fix objtool not to discard text references from the __tracepoints
section so that ENDBR validation still works
- Correct the setup_data types limit as it is user-visible, before 5.19
releases
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Merge tag 'x86_urgent_for_v5.19_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Prepare for and clear .brk early in order to address XenPV guests
failures where the hypervisor verifies page tables and uninitialized
data in that range leads to bogus failures in those checks
- Add any potential setup_data entries supplied at boot to the identity
pagetable mappings to prevent kexec kernel boot failures. Usually,
this is not a problem for the normal kernel as those mappings are
part of the initially mapped 2M pages but if kexec gets to allocate
the second kernel somewhere else, those setup_data entries need to be
mapped there too.
- Fix objtool not to discard text references from the __tracepoints
section so that ENDBR validation still works
- Correct the setup_data types limit as it is user-visible, before 5.19
releases
* tag 'x86_urgent_for_v5.19_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot: Fix the setup data types max limit
x86/ibt, objtool: Don't discard text references from tracepoint section
x86/compressed/64: Add identity mappings for setup_data entries
x86: Fix .brk attribute in linker script
x86: Clear .brk area at early boot
x86/xen: Use clear_bss() for Xen PV guests
