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Split the drivers/scsi/ufs directory into 'core' and 'host' directories
under the drivers/ufs/ directory. Move shared header files into the
include/ufs/ directory. This separation makes it clear which header files
UFS drivers are allowed to include (include/ufs/*.h) and which header files
UFS drivers are not allowed to include (drivers/ufs/core/*.h).
Update the MAINTAINERS file. Add myself as a UFS reviewer.
Link: https://lore.kernel.org/r/[email protected]
Cc: Adrian Hunter <[email protected]>
Cc: Avri Altman <[email protected]>
Cc: Bean Huo <[email protected]>
Cc: Bjorn Andersson <[email protected]>
Cc: Keoseong Park <[email protected]>
Tested-by: Bean Huo <[email protected]>
Tested-by: Adrian Hunter <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Acked-by: Avri Altman <[email protected]>
Acked-by: Adrian Hunter <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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ufshpb_resume() is only called when the HPB state is HPB_SUSPEND, so the
check statement for "ufshpb_get_state(hpb) != HPB_PRESENT" is useless.
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Keoseong Park <[email protected]>
Signed-off-by: Bean Huo <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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In UFS HPB Spec JESD220-3A,
"5.8. Active and inactive information upon power cycle
...
When the device is powered off by the host, the device may restore L2P map
data upon power up or build from the host's HPB READ command. In case
device powered up and lost HPB information, device can signal to the host
through HPB Sense data, by setting HPB Operation as '2' which will inform
the host that device reset HPB information."
Therefore, for HPB device control mode, if the UFS device is reset via the
RST_N pin, the active region information in the device will be reset. If
the host side receives this notification from the device side, it is
recommended to inactivate all active regions in the host's HPB cache.
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Keoseong Park <[email protected]>
Reviewed-by: Daejun Park <[email protected]>
Signed-off-by: Bean Huo <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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According to the documentation of the sysfs nodes rb_noti_cnt,
rb_active_cnt and rb_inactive_cnt, these are all related to HPB
recommendation in UPIU response packet. 'rcmd' (recommendation) should be
the correct abbreviation.
Change the sysfs documentation about these sysfs nodes to highlight what
they mean under different HPB control modes.
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Keoseong Park <[email protected]>
Signed-off-by: Bean Huo <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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"When the device is powered off by the host, the device may restore L2P map
data upon power up or build from the host's HPB READ command. In case
device powered up and lost HPB information, device can signal to the host
through HPB Sense data, by setting HPB Operation as '2' which will inform
the host that device reset HPB information."
Clean up the handler and make the intent of this handler more readable, no
functional change.
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Keoseong Park <[email protected]>
Reviewed-by: Daejun Park <[email protected]>
Signed-off-by: Bean Huo <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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If the first enumerator has no initializer, the value of the corresponding
constant is zero.
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Keoseong Park <[email protected]>
Signed-off-by: Bean Huo <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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There is no functional change in this patch, just merge ufshpb_reset() and
ufshpb_reset_host() into one function ufshpb_toggle_state().
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Keoseong Park <[email protected]>
Signed-off-by: Bean Huo <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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In order to allow the block devices to enter autosuspend mode during
runtime, thereby allowing the ufshcd host driver to also runtime suspend,
let's make use of the RPM_AUTOSUSPEND flag.
Without this flag, userspace needs to enable the autosuspend feature of
the block devices through sysfs.
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Bjorn Andersson <[email protected]>
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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The wmb() inside ufshcd_send_command() is added to make sure that the
doorbell is committed immediately. This leads to couple of expectations:
1. The doorbell write should complete before the function return.
2. The doorbell write should not cross the function boundary.
2nd expectation is fullfilled by the Linux memory model as there is a
guarantee that the critical section won't cross the unlock (release)
operation.
1st expectation is not really needed here as there is no following read/
write that depends on the doorbell to be complete implicitly. Even if the
doorbell write is in a CPUs Write Buffer (WB), wmb() won't flush it. And
there is no real need of a WB flush here as well.
So let's get rid of the wmb() that seems redundant.
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Bart Van Assche <[email protected]>
Reviewed-by: Bjorn Andersson <[email protected]>
Acked-by: Bean Huo <[email protected]>
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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In ufs_qcom_dev_ref_clk_ctrl(), it was noted that the ref_clk needs to be
stable for at least 1us. Even though there is wmb() to make sure the write
gets "completed", there is no guarantee that the write actually reached the
UFS device. There is a good chance that the write could be stored in a
Write Buffer (WB). In that case, even though the CPU waits for 1us, the
ref_clk might not be stable for that period.
So lets do a readl() to make sure that the previous write has reached the
UFS device before udelay().
Also, the wmb() after writel_relaxed() is not really needed. Both writel()
and readl() are ordered on all architectures and the CPU won't speculate
instructions after readl() due to the in-built control dependency with read
value on weakly ordered architectures. So it can be safely removed.
Link: https://lore.kernel.org/r/[email protected]
Fixes: f06fcc7155dc ("scsi: ufs-qcom: add QUniPro hardware support and power optimizations")
Cc: [email protected]
Reviewed-by: Bjorn Andersson <[email protected]>
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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There is no need to call devm_phy_get() if ACPI is used, so skip it. The
host->generic_phy pointer should already be NULL due to the kzalloc(), so
no need to set it NULL again.
While at it, also remove the comment that has no relationship with
devm_phy_get().
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Bjorn Andersson <[email protected]>
Reviewed-by: Andrew Halaney <[email protected]>
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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On Qcom UFS platforms, the reset control line seems to be optional (for
SoCs like MSM8996 and probably for others too). The current logic tries to
mimic the devm_reset_control_get_optional() API but it also continues the
probe if there is an error with the declared reset line in DT/ACPI.
In an ideal case, if the reset line is not declared in DT/ACPI, the probe
should continue. But if there is problem in acquiring the declared reset
line (like EPROBE_DEFER) it should fail and return the appropriate error
code.
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Bjorn Andersson <[email protected]>
Reviewed-by: Andrew Halaney <[email protected]>
Signed-off-by: Manivannan Sadhasivam <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Using pm_runtime_resume_and_get() to replace pm_runtime_get_sync() and
pm_runtime_put_noidle(). This change is just to simplify the code, no
actual functional changes.
Link: https://lore.kernel.org/r/[email protected]
Reported-by: Zeal Robot <[email protected]>
Signed-off-by: Minghao Chi <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Fix following checkincludes warning:
drivers/scsi/ufs/ufshcd.c: linux/nls.h is included more than once.
The include is in line 14. Remove the duplicate.
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Avri Altman <[email protected]>
Signed-off-by: Wan Jiabing <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Some devices may return invalid or zeroed data during an UIC error
condition. In addition, reading these SFRs will clear them. This means the
subsequent error handling will not be able to see them and therefore no
error handling will be scheduled.
Skip reading these SFRs in ufshcd_dump_regs().
Link: https://lore.kernel.org/r/[email protected]
Fixes: d67247566450 ("scsi: ufs: Use explicit access size in ufshcd_dump_regs")
Signed-off-by: Kiwoong Kim <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Move the definition of this function from a public into a private header
file since it is only used inside the UFS core.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Move the definition of this data structure since it is only used in a
single source file.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Split the ufshcd.h header file into a header file that defines the
interface used by UFS drivers and another header file with declarations and
data structures only used by the UFS core.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Follow the convention that is used elsewhere in the Linux kernel source
code and only include those headers of which the declarations are used
directly.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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This patch fixes all the warnings and errors reported by the following
command:
scripts/kernel-doc -none drivers/scsi/ufs/ufshcd.h
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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ufshcd-crypto.h declares functions that must only be called by the UFS
core. Hence remove the #include "ufshcd-crypto.h" directive from UFS
drivers.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Eric Biggers <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Clearing hba->is_sys_suspended if ufs_qcom_resume() succeeds is wrong. That
variable must only be cleared if all actions involved in a resume succeed.
Hence remove the statement that clears hba->is_sys_suspended from
ufs_qcom_resume().
Link: https://lore.kernel.org/r/[email protected]
Fixes: 81c0fc51b7a7 ("ufs-qcom: add support for Qualcomm Technologies Inc platforms")
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Bjorn Andersson <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Since the code to modify delay_ms while holding the host lock occurs twice,
introduce a function that performs this action.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Single register writes are atomic and hence do not need to be surrounded by
locking. Additionally, MMIO writes are typically posted asynchronously.
Hence, there is no guarantee that these have finished by the time the
spin_unlock*() call has finished. See also the nonposted-mmio property of
the Open Firmware tree. See also pci_iomap().
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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In the Linux kernel coding style document
(Documentation/process/coding-style.rst) it is recommended to use the type
'bool' and also the values 'true' and 'false'. Hence this patch that
removes the definitions and uses of TRUE and FALSE from the UFS driver.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Since specifying the path in a source file is redundant, remove the paths
from source code comments.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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As requested in Documentation/process/license-rules.rst, use an SPDX
license identifier.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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The new name reflects the role of this member variable better: a WLUN
through which the power mode of the UFS device is controlled.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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The current version number is 0.2. That driver version was assigned more
than nine years ago. A version number that is not updated while the driver
is updated is not useful. Hence remove the driver version number from the
UFS driver. See also commit e0eca63e3421 ("[SCSI] ufs: Separate PCI code
into glue driver").
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Pass the actual type to config_scaling_param callback as the third argment
instead of a void pointer. Remove a superfluous NULL pointer check from
ufs_qcom_config_scaling_param().
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Bjorn Andersson <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Make it easier to verify for humans that ufshcd_init_pwr_dev_param()
initializes all structure members. This patch does not change any
functionality.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Commit 5b44a07b6bb2 ("scsi: ufs: Remove pre-defined initial voltage values
of device power") removed the code that uses the UFS_VREG_VCC* constants
and also the code that sets the min_uV and max_uV member variables. Hence
also remove these constants and that member variable.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Stanley Chu <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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It is confusing that ufshcd_is_hba_active() returns 'true' if the HBA is
not active. Clear up this confusion by inverting the return value of
ufshcd_is_hba_active(). This patch does not change any functionality.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Declare the quirks array and also its 'model' member const to make it
explicit that these are not modified.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Since struct ufs_dev_fix contains quirk information, rename it into struct
ufs_dev_quirk.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Since these two macros reduce code readability, remove them.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Use get_unaligned_be16(...) instead of the equivalent but harder to read
be16_to_cpup((__be16 *)...).
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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ufshcd_lrb.sense_buffer is NULL if ufshcd_lrb.cmd is NULL and
ufshcd_lrb.sense_buffer points at cmd->sense_buffer if ufshcd_lrb.cmd is
set. In other words, the ufshcd_lrb.sense_buffer member is identical to
cmd->sense_buffer. Hence this patch that removes the
ufshcd_lrb.sense_buffer structure member.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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ufshcd_lrb.sense_bufflen is set but never read. Hence remove this struct
member.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Keoseong Park <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Convert "if (expr) return true; else return false;" into "return expr;" if
either 'expr' is a boolean expression or the return type of the function is
'bool'.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Bjorn Andersson <[email protected]>
Reviewed-by: Keoseong Park <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Remove "? true : false" if the preceding expression yields a boolean or if
the result of the expression is assigned to a boolean since in these two
cases the "? true : false" part is superfluous.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Bjorn Andersson <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Declare this function static since it is only used inside the ufshcd.c
source file.
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Change one occurrence of "adpater" into "adapter".
Link: https://lore.kernel.org/r/[email protected]
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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UFS devices are expected to clear fDeviceInit flag in single digit
milliseconds. Current values of 5 to 10 millisecond sleep add to increased
latency during the initialization and resume path. This CL lowers the sleep
range to 500 to 1000 microseconds.
Link: https://lore.kernel.org/r/[email protected]
Acked-by: Avri Altman <[email protected]>
Signed-off-by: Konstantin Vyshetsky <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Pull in 5.18 fixes branch which contains a bunch of fixes required for
the lpfc driver update.
Signed-off-by: Martin K. Petersen <[email protected]>
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Since the HPB mapping is already reset in ufshpb_init() by setting flag
QUERY_FLAG_IDN_HPB_RESET, there is no need doing so again in
ufshpb_hpb_lu_prepared().
This also resolves the issue where HPB WRITE BUFFER is issued before UAC is
cleared.
Link: https://lore.kernel.org/r/[email protected]
Acked-by: Bean Huo <[email protected]>
Signed-off-by: Po-Wen Kao <[email protected]>
Signed-off-by: Bean Huo <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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The 'struct device' pointer is already cached as a local variable in
ufshcd_pltfrm_init(), so use it.
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Chanho Park <[email protected]>
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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The list iterator is always non-NULL so the check 'if (!rgn)' is always
false and the dev_err() is never called. Move the check outside the loop
and determine if 'victim_rgn' is NULL, to fix this bug.
Link: https://lore.kernel.org/r/[email protected]
Fixes: 4b5f49079c52 ("scsi: ufs: ufshpb: L2P map management for HPB read")
Reviewed-by: Daejun Park <[email protected]>
Signed-off-by: Xiaomeng Tong <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Add PCI ID and callbacks to support Intel Meteor Lake (MTL).
Link: https://lore.kernel.org/r/[email protected]
Cc: [email protected] # v5.15+
Reviewed-by: Avri Altman <[email protected]>
Reviewed-by: Bart Van Assche <[email protected]>
Signed-off-by: Adrian Hunter <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
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Pull the remaining commits from 5.18/scsi-queue into fixes.
Signed-off-by: Martin K. Petersen <[email protected]>
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