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Link the backlight to the LVDS and parallel display panel. Also
disable the parallel display panel by default (the controller
is already disabled by default).
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
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The current default timings mess with the HDMI pixel clock. Enable
HDMI only by default to make sure we have a proper pixelclock.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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The imx-ocotp nvmem driver supports the i.MX 7D SoC too. Allow to select
the imx-ocotp driver even if only the i.MX 7D SoC has been selected.
Fixes: 711d45477931 ("nvmem: octop: Add i.MX7D support")
Signed-off-by: Stefan Agner <stefan@agner.ch>
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The BT coex event is not an error condition. Don't print an error
message in this case. The same even in sta_event.c prints a
message using the debug level already.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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A valid WEIM range configuration must specify range entries for
all four chip selects. This fixes an error on boot:
imx-weim: probe of 21b8000.weim failed with error -22
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Since commit d2d0ad2aec4a ("i2c: imx: use open drain for recovery
GPIO") GPIO lib expects this GPIO to be configured as open drain.
Make sure we define this GPIO as open drain in the device tree.
This gets rid of the following warning:
gpio-81 (scl): enforced open drain please flag it properly in DT/ACPI DSDT/board file
Note that currently the i.MX pinctrl driver does not support
enabling open drain directly, so this patch has no effect in
practice. Open drain is enabled by the fixed pinmux entry.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Deferred probes shouldn't cause error messages in the boot log, so
change the dev_err() to the more harmless dev_info().
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Probe deferral is to be expected during normal operation, so avoid
printing an error when it is encountered.
Removing the goto would not be strictly necessary. However, if
code gets added later, the cleanup in the EPROBE_DEFER case likely
would get missed.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
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Probe deferral is to be expected during normal operation, so avoid
printing an error when it is encountered.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
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Probe deferral is to be expected during normal operation, so avoid
printing an error when it is encountered.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
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Not finding the codec/SSI instance can be due to probe deferral.
Do not print error messages in those cases.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
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Make sure to properly put the of node in case finding the codec
fails.
Fixes: 81e8e4926167 ("ASoC: fsl: add sgtl5000 clock support for imx-sgtl5000")
Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
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Allow to use DMA for SPI by adding the appropriate DMA properites
to the ecspi nodes.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Allow to use DMA for SPI by adding the appropriate DMA properites
to the ecspi nodes.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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The symbols provided by ssi-fiq are used in sound/soc/fsl/imx-pcm-fiq.c
only. Build ssi-fiq.o/ssi-fiq-ksym.o only if SND_SOC_IMX_PCM_FIQ is
enabled.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Add a fault handler which handles immediate reads in Thumb-2
mode. Install the appropriate handler depending on which mode
the kernel has been built. This avoids an "Unhandled fault:
external abort on non-linefetch (0x1008) at 0xf0a80000"
during boot on a device with a PCIe switch connected.
Link: https://lore.kernel.org/linux-pci/20181126161645.8177-1-stefan@agner.ch/
Signed-off-by: Stefan Agner <stefan@agner.ch>
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The custom fault handler is currently only meant to handle kernel
mode bus faults. Exit in case the abort happened in user mode.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Define the length of the DBI registers and limit config space to its
length. This makes sure that the kernel does not access registers
beyond that point, avoiding the following abort on a i.MX 6Quad:
# cat /sys/devices/soc0/soc/1ffc000.pcie/pci0000\:00/0000\:00\:00.0/config
[ 100.021433] Unhandled fault: imprecise external abort (0x1406) at 0xb6ea7000
...
[ 100.056423] PC is at dw_pcie_read+0x50/0x84
[ 100.060790] LR is at dw_pcie_rd_own_conf+0x44/0x48
...
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Introduce driver data struct. This will simplify handling of device
specific differences.
Signed-off-by: Stefan Agner <stefan@agner.ch>
[andrew.smirnov@gmail.com reformatted drvdata, to simplify future diffs]
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Cc: "A.s. Dong" <aisheng.dong@nxp.com>
Cc: Richard Zhu <hongxing.zhu@nxp.com>
(cherry picked from commit e8e4d4e95701a10691c53165c55789e5e50ba3f5)
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If the device used as a serial console gets un/re-binded, then
register_console() will call imx_uart_setup_console() again.
Drop __init so that imx_uart_setup_console() can be safely called
at runtime.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Currently imx_uart_console_setup() prepares clocks which do not
get unprepared anywhere. Check whether the console has been used
by testing if index is set and unprepare clocks in this case.
This makes sure that clocks are properly unprepared after the
console device has been unbound.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Several modules have issues with HS400 at 100MHz at room temperature
but they seem to work fine at HS200 at 200MHz. Do not restrict
frequency but use HS200 instead.
Force HS200 by masking bit 63 of the SDHCI capability register.
The i.MX ESDHC driver uses SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400. With
that the stack checks bit 63 to descide whether HS400 is available.
Using sdhci-caps-mask allows to mask bit 63. The stack then selects
HS200 as operating mode.
This prevents rare communication errors with minimal effect on
performance:
sdhci-esdhc-imx 30b60000.usdhc: warning! HS400 strobe DLL status REF not lock!
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Specify the bus format in the panel device tree node only. This
makes sure that the parallel display driver also reads the bus
flags from the panel driver. With that flags such as pixel clock
polarity work as expected.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Replace spaces with tabs.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Make sure that the bus_flags parsed from the display timings are
passed to the connector display info.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Rename display interface to match other modules
to make it easyer to use overlays
Signed-off-by: Luka Pivk <luka.pivk@toradex.com>
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Rename display interface to match imx6qdl-apalis
to make it easyer to use overlays
Signed-off-by: Luka Pivk <luka.pivk@toradex.com>
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Use the generic LVDS panel compatible in device tree to describe
the upcomming Toradex 10.1 LVDS display.
This also allows to customize LVDS timings using device tree
overlays.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Use generic DPI panel in device tree instead of using a specific
panel provided by the simple panel driver. This will allow to
use custom panel timings using device tree overlays.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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The LVDS panel driver has almost everything which is required to
describe a simple parallel RGB panel (also known as DPI, Display
Pixel Interface).
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Currently, the DDC signals are controlled by the DWC HDMI I2C
master to be used for HDMI (DVI on the Apalis Evaluation Board).
However, the Apalis Evaluation board also allows to route the Apalis
DDC I2C to the LVDS or the VGA connector. By default, the signal
is routed to DVI (HDMI), and therefor the current default settings
are sensible.
To ease customization and to prepare for carrier boards with other
needs, add a GPIO I2C DDC node.
E.g. to reroute the Apalis DDC to the VGA connector on the Apalis
Evaluation Board, the following changes can be used:
vga {
...
ddc-i2c-bus = <&i2cddc>;
};
&hdmi {
/delete-property/ pinctrl-0;
};
&i2cddc {
status = "okay";
};
Signed-off-by: Stefan Agner <stefan@agner.ch>
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The Apalis iMX6 modules use a simple DAC using resistor ladders
to convert parallel RGB to VGA. Add support for this output using
the dump VGA driver.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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A bridge might require specific settings for the pixel data on
the bus. Copy the bus flags from the bridge timings if a bridge
is in use.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Allow to specify the data-enable polarity required by a dumb VGA
DAC converting parallel RGB to VGA.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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Support boards with a passive RGB to VGA bridge which require a low
active data-enable polarity.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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The DRM bus flags convey additional information on pixel data on
the bus. All current available bus flags might be of interest for
a bridge. Remove the sampling_edge field and use bus_flags.
In the case at hand a dumb VGA bridge needs a specific data enable
polarity (DRM_BUS_FLAG_DE_LOW).
Signed-off-by: Stefan Agner <stefan@agner.ch>
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The default clock source for all display interfaces is PLL5. If
vastly different clocks are requested, the second display interface
might change the root clock leading to a wrong clock for the first
display. E.g. when combinding HDMI at full HD and parallel RGB at
VGA resolution. In the Apalis case the parallel RGB interface gets
probed second. The HDMI port needs a clock of 148.5MHz and therefor
sets the shared root clock to pll5_video_div. The parallel RGB
interface needs a clock of 25.175MHz which changes the shared root
clock pll5_video_div to 50.35MHz, which then leads to a wrong clock
for HDMI.
Other root clocks do not support very accurate clock setting, but
avoids conflicts between the two interfaces.
Use PLL2 PFD2 for the typically slower parallel RGB interfaces to
avoid messing with the PLL5 clock.
Signed-off-by: Stefan Agner <stefan@agner.ch>
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commit 16065fcdd19ddb9e093192914ac863884f308766 upstream.
Bisected guest kernel changes crashing qemu. Landed at
"6c1cd97bda drm/virtio: fix resource id handling". Looked again, and
noticed we where not only leaking *some* ids, but *all* ids. The old
code never ever called virtio_gpu_resource_id_put().
So, commit 6c1cd97bda effectively makes the linux kernel starting
re-using IDs after releasing them, and apparently virglrenderer can't
deal with that. Oops.
This patch puts a temporary stopgap into place for the 5.0 release.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190208140409.15280-1-kraxel@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit c73f4c998e1fd4249b9edfa39e23f4fda2b9b041 upstream.
Referring to the "VIRTUALIZING MSR-BASED APIC ACCESSES" chapter of the
SDM, when "virtualize x2APIC mode" is 1 and "APIC-register
virtualization" is 0, a RDMSR of 808H should return the VTPR from the
virtual APIC page.
However, for nested, KVM currently fails to disable the read intercept
for this MSR. This means that a RDMSR exit takes precedence over
"virtualize x2APIC mode", and KVM passes through L1's TPR to L2,
instead of sourcing the value from L2's virtual APIC page.
This patch fixes the issue by disabling the read intercept, in VMCS02,
for the VTPR when "APIC-register virtualization" is 0.
The issue described above and fix prescribed here, were verified with
a related patch in kvm-unit-tests titled "Test VMX's virtualize x2APIC
mode w/ nested".
Signed-off-by: Marc Orr <marcorr@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Fixes: c992384bde84f ("KVM: vmx: speed up MSR bitmap merge")
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit acff78477b9b4f26ecdf65733a4ed77fe837e9dc upstream.
The nested_vmx_prepare_msr_bitmap() function doesn't directly guard the
x2APIC MSR intercepts with the "virtualize x2APIC mode" MSR. As a
result, we discovered the potential for a buggy or malicious L1 to get
access to L0's x2APIC MSRs, via an L2, as follows.
1. L1 executes WRMSR(IA32_SPEC_CTRL, 1). This causes the spec_ctrl
variable, in nested_vmx_prepare_msr_bitmap() to become true.
2. L1 disables "virtualize x2APIC mode" in VMCS12.
3. L1 enables "APIC-register virtualization" in VMCS12.
Now, KVM will set VMCS02's x2APIC MSR intercepts from VMCS12, and then
set "virtualize x2APIC mode" to 0 in VMCS02. Oops.
This patch closes the leak by explicitly guarding VMCS02's x2APIC MSR
intercepts with VMCS12's "virtualize x2APIC mode" control.
The scenario outlined above and fix prescribed here, were verified with
a related patch in kvm-unit-tests titled "Add leak scenario to
virt_x2apic_mode_test".
Note, it looks like this issue may have been introduced inadvertently
during a merge---see 15303ba5d1cd.
Signed-off-by: Marc Orr <marcorr@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 4ed319c6ac08e9a28fca7ac188181ac122f4de84 upstream.
dm-integrity will deadlock if overlapping I/O is issued to it, the bug
was introduced by commit 724376a04d1a ("dm integrity: implement fair
range locks"). Users rarely use overlapping I/O so this bug went
undetected until now.
Fix this bug by correcting, likely cut-n-paste, typos in
ranges_overlap() and also remove a flawed ranges_overlap() check in
remove_range_unlocked(). This condition could leave unprocessed bios
hanging on wait_list forever.
Cc: stable@vger.kernel.org # v4.19+
Fixes: 724376a04d1a ("dm integrity: implement fair range locks")
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit bcb44433bba5eaff293888ef22ffa07f1f0347d6 upstream.
Storage devices which report supporting discard commands like
WRITE_SAME_16 with unmap, but reject discard commands sent to the
storage device. This is a clear storage firmware bug but it doesn't
change the fact that should a program cause discards to be sent to a
multipath device layered on this buggy storage, all paths can end up
failed at the same time from the discards, causing possible I/O loss.
The first discard to a path will fail with Illegal Request, Invalid
field in cdb, e.g.:
kernel: sd 8:0:8:19: [sdfn] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
kernel: sd 8:0:8:19: [sdfn] tag#0 Sense Key : Illegal Request [current]
kernel: sd 8:0:8:19: [sdfn] tag#0 Add. Sense: Invalid field in cdb
kernel: sd 8:0:8:19: [sdfn] tag#0 CDB: Write same(16) 93 08 00 00 00 00 00 a0 08 00 00 00 80 00 00 00
kernel: blk_update_request: critical target error, dev sdfn, sector 10487808
The SCSI layer converts this to the BLK_STS_TARGET error number, the sd
device disables its support for discard on this path, and because of the
BLK_STS_TARGET error multipath fails the discard without failing any
path or retrying down a different path. But subsequent discards can
cause path failures. Any discards sent to the path which already failed
a discard ends up failing with EIO from blk_cloned_rq_check_limits with
an "over max size limit" error since the discard limit was set to 0 by
the sd driver for the path. As the error is EIO, this now fails the
path and multipath tries to send the discard down the next path. This
cycle continues as discards are sent until all paths fail.
Fix this by training DM core to disable DISCARD if the underlying
storage already did so.
Also, fix branching in dm_done() and clone_endio() to reflect the
mutually exclussive nature of the IO operations in question.
Cc: stable@vger.kernel.org
Reported-by: David Jeffery <djeffery@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit eb40c0acdc342b815d4d03ae6abb09e80c0f2988 upstream.
Some devices don't use blk_integrity but still want stable pages
because they do their own checksumming. Examples include rbd and iSCSI
when data digests are negotiated. Stacking DM (and thus LVM) on top of
these devices results in sporadic checksum errors.
Set BDI_CAP_STABLE_WRITES if any underlying device has it set.
Cc: stable@vger.kernel.org
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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PAGE_SIZE")
commit 75ae193626de3238ca5fb895868ec91c94e63b1b upstream.
The limit was already incorporated to dm-crypt with commit 4e870e948fba
("dm crypt: fix error with too large bios"), so we don't need to apply
it globally to all targets. The quantity BIO_MAX_PAGES * PAGE_SIZE is
wrong anyway because the variable ti->max_io_len it is supposed to be in
the units of 512-byte sectors not in bytes.
Reduction of the limit to 1048576 sectors could even cause data
corruption in rare cases - suppose that we have a dm-striped device with
stripe size 768MiB. The target will call dm_set_target_max_io_len with
the value 1572864. The buggy code would reduce it to 1048576. Now, the
dm-core will errorneously split the bios on 1048576-sector boundary
insetad of 1572864-sector boundary and pass these stripe-crossing bios
to the striped target.
Cc: stable@vger.kernel.org # v4.16+
Fixes: 8f50e358153d ("dm: limit the max bio size as BIO_MAX_PAGES * PAGE_SIZE")
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 0d74e6a3b6421d98eeafbed26f29156d469bc0b5 upstream.
If the string opt_string is small, the function memcmp can access bytes
that are beyond the terminating nul character. In theory, it could cause
segfault, if opt_string were located just below some unmapped memory.
Change from memcmp to strncmp so that we don't read bytes beyond the end
of the string.
Cc: stable@vger.kernel.org # v4.12+
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 7100e8704b61247649c50551b965e71d168df30b upstream.
Commit 48e7b76957 ("powerpc/64s/hash: Convert SLB miss handlers to C")
broke the radix-mode segment exception handler. In radix mode, this is
exception is not an SLB miss, rather it signals that the EA is outside
the range translated by any page table.
The commit lost the radix feature alternate code patch, which can
cause faults to some EAs to kernel BUG at arch/powerpc/mm/slb.c:639!
The original radix code would send faults to slb_miss_large_addr,
which would end up faulting due to slb_addr_limit being 0. This patch
sends radix directly to do_bad_slb_fault, which is a bit clearer.
Fixes: 48e7b7695745 ("powerpc/64s/hash: Convert SLB miss handlers to C")
Cc: stable@vger.kernel.org # v4.20+
Reported-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e1ede312f17e96a9c5cda9aaa1cdcf442c1a5da8 upstream.
We want to drain only the RQ first. Otherwise the transport can
deadlock on ->close if there are outstanding Send completions.
Fixes: 6d2d0ee27c7a ("xprtrdma: Replace rpcrdma_receive_wq ... ")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: stable@vger.kernel.org # v5.0+
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 3943af9d01e94330d0cfac6fccdbc829aad50c92 upstream.
During a safe hot remove, the OS powers off the slot, which may cause a
Data Link Layer State Changed event. The slot has already been set to
OFF_STATE, so that event results in re-enabling the device, making it
impossible to safely remove it.
Clear out the Presence Detect Changed and Data Link Layer State Changed
events when the disabled slot has settled down.
It is still possible to re-enable the device if it remains in the slot
after pressing the Attention Button by pressing it again.
Fixes the problem that Micah reported below: an NVMe drive power button may
not actually turn off the drive.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=203237
Reported-by: Micah Parrish <micah.parrish@hpe.com>
Tested-by: Micah Parrish <micah.parrish@hpe.com>
Signed-off-by: Sergey Miroshnichenko <s.miroshnichenko@yadro.com>
[bhelgaas: changelog, add bugzilla URL]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lukas Wunner <lukas@wunner.de>
Cc: stable@vger.kernel.org # v4.19+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 9cde402a59770a0669d895399c13407f63d7d209 upstream.
There is a Marvell 88SE9170 PCIe SATA controller I found on a board here.
Some quick testing with the ARM SMMU enabled reveals that it suffers from
the same requester ID mixup problems as the other Marvell chips listed
already.
Add the PCI vendor/device ID to the list of chips which need the
workaround.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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