=============================================================================
BUG discard_cmd (Tainted: G B OE ): Objects remaining in discard_cmd on __kmem_cache_shutdown()
-----------------------------------------------------------------------------
INFO: Slab 0xffffe1ac481d22c0 objects=36 used=2 fp=0xffff936b4748bf50 flags=0x2ffff0000000100
Call Trace:
dump_stack+0x63/0x87
slab_err+0xa1/0xb0
__kmem_cache_shutdown+0x183/0x390
shutdown_cache+0x14/0x110
kmem_cache_destroy+0x195/0x1c0
f2fs_destroy_segment_manager_caches+0x21/0x40 [f2fs]
exit_f2fs_fs+0x35/0x641 [f2fs]
SyS_delete_module+0x155/0x230
? vtime_user_exit+0x29/0x70
do_syscall_64+0x6e/0x160
entry_SYSCALL64_slow_path+0x25/0x25
INFO: Object 0xffff936b4748b000 @offset=0
INFO: Object 0xffff936b4748b070 @offset=112
kmem_cache_destroy discard_cmd: Slab cache still has objects
Call Trace:
dump_stack+0x63/0x87
kmem_cache_destroy+0x1b4/0x1c0
f2fs_destroy_segment_manager_caches+0x21/0x40 [f2fs]
exit_f2fs_fs+0x35/0x641 [f2fs]
SyS_delete_module+0x155/0x230
do_syscall_64+0x6e/0x160
entry_SYSCALL64_slow_path+0x25/0x25
Recovery can cache discard commands, so in error path of fill_super(),
we need give a chance to handle them, otherwise it will lead to leak
of discard_cmd slab cache.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
On a quota disabled image, with fault injection, SBI_QUOTA_NEED_REPAIR
will be set incorrectly in error path of f2fs_evict_inode(), fix it.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
As reported in bugzilla:
https://bugzilla.kernel.org/show_bug.cgi?id=204193
A null pointer dereference bug is triggered in f2fs under kernel-5.1.3.
kasan_report.cold+0x5/0x32
f2fs_write_end_io+0x215/0x650
bio_endio+0x26e/0x320
blk_update_request+0x209/0x5d0
blk_mq_end_request+0x2e/0x230
lo_complete_rq+0x12c/0x190
blk_done_softirq+0x14a/0x1a0
__do_softirq+0x119/0x3e5
irq_exit+0x94/0xe0
call_function_single_interrupt+0xf/0x20
During umount, we will access NULL sbi->node_inode pointer in
f2fs_write_end_io():
f2fs_bug_on(sbi, page->mapping == NODE_MAPPING(sbi) &&
page->index != nid_of_node(page));
The reason is if disable_checkpoint mount option is on, meta dirty
pages can remain during umount, and then be flushed by iput() of
meta_inode, however node_inode has been iput()ed before
meta_inode's iput().
Since checkpoint is disabled, all meta/node datas are useless and
should be dropped in next mount, so in umount, let's adjust
drop_inode() to give a hint to iput_final() to drop all those dirty
datas correctly.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
If IO alignment feature is turned on after remount, we didn't
initialize mempool of it, it turns out we will encounter panic
during IO submission due to access NULL mempool pointer.
This feature should be set only at mount time, so simply deny
configuring during remount.
This fixes bug reported in bugzilla:
https://bugzilla.kernel.org/show_bug.cgi?id=204135
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Since 07173c3ec2 ("block: enable multipage bvecs"), one bio vector
can store multi pages, so that we can not calculate max IO size of
bio as PAGE_SIZE * bio->bi_max_vecs. However IO alignment feature of
f2fs always has that assumption, so finally, it may cause panic during
IO submission as below stack.
kernel BUG at fs/f2fs/data.c:317!
RIP: 0010:__submit_merged_bio+0x8b0/0x8c0
Call Trace:
f2fs_submit_page_write+0x3cd/0xdd0
do_write_page+0x15d/0x360
f2fs_outplace_write_data+0xd7/0x210
f2fs_do_write_data_page+0x43b/0xf30
__write_data_page+0xcf6/0x1140
f2fs_write_cache_pages+0x3ba/0xb40
f2fs_write_data_pages+0x3dd/0x8b0
do_writepages+0xbb/0x1e0
__writeback_single_inode+0xb6/0x800
writeback_sb_inodes+0x441/0x910
wb_writeback+0x261/0x650
wb_workfn+0x1f9/0x7a0
process_one_work+0x503/0x970
worker_thread+0x7d/0x820
kthread+0x1ad/0x210
ret_from_fork+0x35/0x40
This patch adds one extra condition to check left space in bio while
trying merging page to bio, to avoid panic.
This bug was reported in bugzilla:
https://bugzilla.kernel.org/show_bug.cgi?id=204043
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Wrap merge condition into function for readability, no logic change.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Initialize maar by resource map and replace page_is_ram
by memblock_is_memory.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
[paul.burton@mips.com:
- Fix bad MAAR address calculations.
- Use ALIGN() & define maar_align to make it clearer what's going on
with address manipulations.
- Drop the new used field from struct maar_config.
- Rework the RAM walk to avoid iterating over the cfg array needlessly
to find the first unused entry, then count used entries at the end.
Instead just keep the count as we go.]
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Cc: yasha.che3@gmail.com
Cc: aurelien@aurel32.net
Cc: sfr@canb.auug.org.au
Cc: fancer.lancer@gmail.com
Cc: matt.redfearn@mips.com
Cc: chenhc@lemote.com
The previous fix listed bulk read of registers as root cause of
accendential disabling of watchdog, since the watchdog counter
register (WD_VAL) was zeroed.
Fixes: 3769a375ab rtc: pcf2127: bulk read only date and time registers.
Tested with the same PCF2127 chip as Sean reveled root cause
of WD_VAL register value zeroing was caused by reading CTRL2
register which is one of the watchdog feature control registers.
So the solution is to not read the first two control registers
(CTRL1 and CTRL2) in pcf2127_rtc_read_time as they are not
needed anyway. Size of local buf variable is kept to allow
easy usage of register defines to improve readability of code.
Debug trace line was updated after CTRL1 and CTRL2 are no longer
read from the chip. Also replaced magic numbers in buf access
with register defines.
Signed-off-by: Bruno Thomsen <bruno.thomsen@gmail.com>
Link: https://lore.kernel.org/r/20190822131936.18772-3-bruno.thomsen@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cleanup of defines to follow kernel coding style and increase code
readability by using same register and bit define style.
Change PCF2127_REG_RAM_{addr_MSB,wrt_cmd,rd_cmd} to upper case as
kernel coding guide section 12 'Macros, Enums and RTL' states
"Names of macros defining constants and labels in enums are capitalized".
Improve readability of RAM register comment by making whole sentences.
Remove parentheses from register defines as they are only used
for expressions and not constants.
As there are no clear style for name of registers and bits in the
kernel drivers, I suggest the following for at least this driver,
but hopefully also other RTC drivers.
Register name should follow this convention:
[chip]_REG_[reg name] 0xXX
Bit name should follow this convention, so it clearly states which
chip register it's part of:
[chip]_BIT_[reg name]_[bit name] BIT(X)
Additionally I suggest bit defines are always placed right below
its corresponding register define and using an extra tab indentation
for the BIT(X) part. This will visually make it easy to see that bit
defines are part of the complete register definition.
Rename PCF2127_OSF to PCF2127_BIT_SC_OSF and move it right below
PCF2127_REG_SC. This will improve readability of bit checks as it's
easy to verify that it uses the correct register.
Move end of line comments above register defines as it's more like
a heading for 1 register define and up to 8 bit defines or a
collection of registers that are close related like timestamp
split across 6 registers.
Signed-off-by: Bruno Thomsen <bruno.thomsen@gmail.com>
Link: https://lore.kernel.org/r/20190822131936.18772-2-bruno.thomsen@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
RTC on H6 is mostly the same as on H5 and H3. It has slight differences
mostly in features that are not yet supported by this driver.
Some differences are already stated in the comments in existing code.
One other difference is that H6 has extra bit in LOSC_CTRL_REG, called
EXT_LOSC_EN to enable/disable external low speed crystal oscillator.
It also has bit EXT_LOSC_STA in LOSC_AUTO_SWT_STA_REG, to check whether
external low speed oscillator is working correctly.
This patch adds support for enabling LOSC when necessary:
- during reparenting
- when probing the clock
H6 also has capacbility to automatically reparent RTC clock from
external crystal oscillator, to internal RC oscillator, if external
oscillator fails. This is enabled by default. Disable it during
probe.
Signed-off-by: Ondrej Jirman <megous@megous.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Link: https://lore.kernel.org/r/20190820151934.3860-3-megous@megous.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
RTC on H6 is similar to the one on H5 SoC, but incompatible in small
details. See the driver for description of differences. For example
H6 RTC needs to enable the external low speed oscillator. Add new
compatible for this RTC.
Signed-off-by: Ondrej Jirman <megous@megous.com>
Link: https://lore.kernel.org/r/20190820151934.3860-2-megous@megous.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
For the platforms including LS1012A, LS1021A, LS1028A, LS1043A,
LS1046A, LS1088A, LS208xA that has the FlexTimer
module, implementing alarm functions within RTC subsystem
to wakeup the system when system going to sleep (work with RCPM driver).
Signed-off-by: Biwen Li <biwen.li@nxp.com>
Link: https://lore.kernel.org/r/20190813030157.48590-1-biwen.li@nxp.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The verification is to support cases where the root hash is not secured
by Trusted Boot, UEFI Secureboot or similar technologies.
One of the use cases for this is for dm-verity volumes mounted after
boot, the root hash provided during the creation of the dm-verity volume
has to be secure and thus in-kernel validation implemented here will be
used before we trust the root hash and allow the block device to be
created.
The signature being provided for verification must verify the root hash
and must be trusted by the builtin keyring for verification to succeed.
The hash is added as a key of type "user" and the description is passed
to the kernel so it can look it up and use it for verification.
Adds CONFIG_DM_VERITY_VERIFY_ROOTHASH_SIG which can be turned on if root
hash verification is needed.
Kernel commandline dm_verity module parameter 'require_signatures' will
indicate whether to force root hash signature verification (for all dm
verity volumes).
Signed-off-by: Jaskaran Khurana <jaskarankhurana@linux.microsoft.com>
Tested-and-Reviewed-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Instead of instantiating a separate cipher to perform the encryption
needed to produce the IV, reuse the skcipher used for the block data
and invoke it one additional time for each block to encrypt a zero
vector and use the output as the IV.
For CBC mode, this is equivalent to using the bare block cipher, but
without the risk of ending up with a non-time invariant implementation
of AES when the skcipher itself is time variant (e.g., arm64 without
Crypto Extensions has a NEON based time invariant implementation of
cbc(aes) but no time invariant implementation of the core cipher other
than aes-ti, which is not enabled by default).
This approach is a compromise between dm-crypt API flexibility and
reducing dependence on parts of the crypto API that should not usually
be exposed to other subsystems, such as the bare cipher API.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Currently, if we pass too high sector number to dm_table_find_target, it
returns zeroed dm_target structure and callers test if the structure is
zeroed with the macro dm_target_is_valid.
However, returning NULL is common practice to indicate errors.
This patch refactors the dm code, so that dm_table_find_target returns
NULL and its callers test the returned value for NULL. The macro
dm_target_is_valid is deleted. In alloc_targets, we no longer allocate an
extra zeroed target.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
If the sector number is too high, dm_table_find_target() should return a
pointer to a zeroed dm_target structure (the caller should test it with
dm_target_is_valid).
However, for some table sizes, the code in dm_table_find_target() that
performs btree lookup will access out of bound memory structures.
Fix this bug by testing the sector number at the beginning of
dm_table_find_target(). Also, add an "inline" keyword to the function
dm_table_get_size() because this is a hot path.
Fixes: 512875bd96 ("dm: table detect io beyond device")
Cc: stable@vger.kernel.org
Reported-by: Zhang Tao <kontais@zoho.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Future AMD systems will support asymmetric dual-rank DIMMs. These are
DIMMs where the ranks are of different sizes.
The even rank will use the Primary Even Chip Select registers and the
odd rank will use the Secondary Odd Chip Select registers.
Recognize if a Secondary Odd Chip Select is being used. Use the
Secondary Odd Address Mask when calculating the chip select size.
[ bp: move csrow_sec_enabled() to the header, fix CS_ODD define and
tone-down the capitalized words spelling. ]
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: "linux-edac@vger.kernel.org" <linux-edac@vger.kernel.org>
Cc: James Morse <james.morse@arm.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
Link: https://lkml.kernel.org/r/20190821235938.118710-8-Yazen.Ghannam@amd.com
* for-joerg/arm-smmu/smmu-v2:
Refactoring to allow for implementation-specific hooks in 'arm-smmu-impl.c'
* for-joerg/arm-smmu/smmu-v3:
Support for deferred TLB invalidation and batching of commands
Rework ATC invalidation for ATS-enabled PCIe masters
hmm_range_fault() may return NULL pages because some of the pfns are equal
to HMM_PFN_NONE. This happens randomly under memory pressure. The reason
is during the swapped out page pte path, hmm_vma_handle_pte() doesn't
update the fault variable from cpu_flags, so it failed to call
hmm_vam_do_fault() to swap the page in.
The fix is to call hmm_pte_need_fault() to update fault variable.
Fixes: 74eee180b9 ("mm/hmm/mirror: device page fault handler")
Link: https://lore.kernel.org/r/20190815205227.7949-1-Philip.Yang@amd.com
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: "Jérôme Glisse" <jglisse@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Up until now, the pata_buddha driver would only check for cards on
initcall time. Now, the kernel will call its probe function as soon
as a compatible card is detected.
v7: Removed suppress_bind_attrs that slipped in
v6: Only do the drvdata workaround for X-Surf (remove breaks otherwise)
Style
v5: Remove module_exit(): There's no good way to handle the X-Surf hack.
Also include a workaround to save X-Surf's drvdata in case zorro8390
is active.
v4: Clean up pata_buddha_probe() by using ent->driver_data.
Support X-Surf via late_initcall()
v3: Clean up devm_*, implement device removal.
v2: Rename 'zdev' to 'z' to make the patch easy to analyse with
git diff --ignore-space-change
Signed-off-by: Max Staudt <max@enpas.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This patch creates a helper function for handling the request
completion in the null_handle_cmd().
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This patch creates a helper function for handling zoned block device
operations.
This patch also restructured the code for null_blk_zoned.c and uses the
pattern to return blk_status_t and catch the error in the function
null_handle_cmd() into cmd->error variable instead of setting it up in
the deeper layer just like the way it is done for flush, badblocks and
memory backed case in the null_handle_cmd(). We also move
null_handle_zoned() to the null_blk_zoned.c to keep the zoned code
separate.
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This patch creates a helper for handling requests when null_blk is
memory backed in the null_handle_cmd(). Although the helper is very
simple right now, it makes the code flow consistent with the rest of
code in the null_handle_cmd() and provides a uniform code structure
for future code.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This patch creates a helper for handling badblocks code in the
null_handle_cmd().
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This patch creates a helper for handling throttling code in the
null_handle_cmd().
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This is a preparation patch which moves the duplicate code for sectors
and nr_sectors calculations for bio vs request mode into their
respective callers (null_queue_bio(), null_qeueue_req()). Now the core
function only deals with the respective actions and commands instead of
having to calculte the bio vs req operations and different sector
related variables. We also move the flush command handling at the top
which significantly simplifies the rest of the code.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Document SoC specific bindings for R-Car RZ/G1C(r8a77470) SoC.
Signed-off-by: Cao Van Dong <cv-dong@jinso.co.jp>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Adds compatible strings for the R-Car CAN FD controller in the D3 SoC.
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Adds compatible strings for the R-Car CAN controller in the D3 SoC.
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Document the support for rcar_can on R8A77990 SoC devices.
Add R8A77990 to the list of SoCs which require the "assigned-clocks"
and "assigned-clock-rates" properties.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
According to the cmdq hardware design, the subsys is u8,
the offset is u16 and the event id is u16.
This patch changes the type of subsys, offset and event id
to the correct type.
Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
The order of gce instructions is [subsys offset value]
so reorder the parameter of cmdq_pkt_write_mask
and cmdq_pkt_write function.
Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Orange Pi 3 has AP6256 WiFi/BT module. WiFi part of the module is called
bcm43356 and can be used with the brcmfmac driver. The module is powered by
the two always on regulators (not AXP805).
WiFi uses a PG port with 1.8V voltage level signals. SoC needs to be
configured so that it sets up an 1.8V input bias on this port. This is done
by the pio driver by reading the vcc-pg-supply voltage.
You'll need a fw_bcm43456c5_ag.bin firmware file and nvram.txt
configuration that can be found in the Xulongs's repository for H6:
https://github.com/orangepi-xunlong/OrangePiH6_external/tree/master/ap6256
Mainline brcmfmac driver expects the firmware and nvram at the following
paths relative to the firmware directory:
brcm/brcmfmac43456-sdio.bin
brcm/brcmfmac43456-sdio.txt
Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
komeda/komeda_pipeline.c: In function 'komeda_component_add':
komeda/komeda_pipeline.c:212:3: warning: function 'komeda_component_add' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
vsnprintf(c->name, sizeof(c->name), name_fmt, args);
^~~~~~~~~
Signed-off-by: james qian wang (Arm Technology China) <james.qian.wang@arm.com>
Reviewed-by: Ayan Kumar Halder <ayan.halder@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190813110759.10425-1-james.qian.wang@arm.com
Fixed two -Wunused-but-set-variable warnings:
/arm/linux/display/aosp-4.14-drm-next/drivers/gpu/drm/arm/display/komeda/komeda_kms.c: In function ‘komeda_crtc_normalize_zpos’:
/arm/linux/display/aosp-4.14-drm-next/drivers/gpu/drm/arm/display/komeda/komeda_kms.c:150:26: warning: variable ‘fb’ set but not used [-Wunused-but-set-variable]
struct drm_framebuffer *fb;
^~
/arm/linux/display/aosp-4.14-drm-next/drivers/gpu/drm/arm/display/komeda/komeda_kms.c: In function ‘komeda_kms_check’:
/arm/linux/display/aosp-4.14-drm-next/drivers/gpu/drm/arm/display/komeda/komeda_kms.c:209:25: warning: variable ‘old_crtc_st’ set but not used [-Wunused-but-set-variable]
struct drm_crtc_state *old_crtc_st, *new_crtc_st;
^~~~~~~~~~~
Signed-off-by: james qian wang (Arm Technology China) <james.qian.wang@arm.com>
Reviewed-by: Ayan Kumar Halder <ayan.halder@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812112322.15990-1-james.qian.wang@arm.com
The patch 5d51f6c0da1b: "drm/komeda: Add writeback support" from May
23, 2019, leads to the following static checker warning:
drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c:151 komeda_wb_connector_add()
error: not allocating enough data 1592 vs 1584
This is a typo which misuse "wb_conn" but which should be "kwb_conn" to
allocate the memory.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: james qian wang (Arm Technology China) <james.qian.wang@arm.com>
Reviewed-by: Ayan Kumar Halder <ayan.halder@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190819080136.10190-1-james.qian.wang@arm.com
On platforms like LS1021A which use TCFQ mode, an interrupt needs to be
processed after each byte is TXed/RXed. I tried to make the DSPI
implementation on this SoC operate in other, more efficient modes (EOQ,
DMA) but it looks like it simply isn't possible.
Therefore allow the driver to operate in poll mode, to ease a bit of
this absurd amount of IRQ load generated in TCFQ mode. Doing so reduces
both the net time it takes to transmit a SPI message, as well as the
inter-frame jitter that occurs while doing so.
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20190822211514.19288-5-olteanv@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
dspi->devtype_data is under the total control of the driver. Therefore,
a bad value is a driver bug and checking it at runtime (and during an
ISR, at that!) is pointless.
The second "else if" check is only for clarity (instead of a broader
"else") in case other transfer modes are added in the future. But the
printing is dead code and can be removed.
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20190822211514.19288-4-olteanv@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The DSPI interrupt can be shared between two controllers at least on the
LX2160A. In that case, the driver for one controller might misbehave and
consume the other's interrupt. Fix this by actually checking if any of
the bits in the status register have been asserted.
Fixes: 13aed23927 ("spi: spi-fsl-dspi: use IRQF_SHARED mode to request IRQ")
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20190822211514.19288-3-olteanv@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
If the entire function depends on the SPI status register having the
interrupt bits asserted, then just check it and exit early if those bits
aren't set (such as in the case of the shared IRQ being triggered for
the other peripheral). Cosmetic patch.
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20190822211514.19288-2-olteanv@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Chao Yu