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37e875042f
android_kernel_samsung_univ.../drivers
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Robert Elliott 37e875042f linvdimm, pmem: Preserve read-only setting for pmem devices 
commit 254a4cd50b9fe2291a12b8902e08e56dcc4e9b10 upstream.

The pmem driver does not honor a forced read-only setting for very long:
	$ blockdev --setro /dev/pmem0
	$ blockdev --getro /dev/pmem0
	1

followed by various commands like these:
	$ blockdev --rereadpt /dev/pmem0
	or
	$ mkfs.ext4 /dev/pmem0

results in this in the kernel serial log:
	 nd_pmem namespace0.0: region0 read-write, marking pmem0 read-write

with the read-only setting lost:
	$ blockdev --getro /dev/pmem0
	0

That's from bus.c nvdimm_revalidate_disk(), which always applies the
setting from nd_region (which is initially based on the ACPI NFIT
NVDIMM state flags not_armed bit).

In contrast, commit 20bd1d026aac ("scsi: sd: Keep disk read-only when
re-reading partition") fixed this issue for SCSI devices to preserve
the previous setting if it was set to read-only.

This patch modifies bus.c to preserve any previous read-only setting.
It also eliminates the kernel serial log print except for cases where
read-write is changed to read-only, so it doesn't print read-only to
read-only non-changes.

Cc: <stable@vger.kernel.org>
Fixes: 5813882094 ("libnvdimm, nfit: handle unarmed dimms, mark namespaces read-only")
Signed-off-by: Robert Elliott <elliott@hpe.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-03 11:21:31 +02:00
..
accessibility
acpi ACPICA: acpi: acpica: fix acpi operand cache leak in nseval.c 2018-05-30 07:49:11 +02:00
amba ARM: amba: Don't read past the end of sysfs "driver_override" buffer 2018-05-02 07:53:42 -07:00
android binder: add missing binder_unlock() 2018-02-28 10:17:23 +01:00
ata libata: Drop SanDisk SD7UB3Q*G1001 NOLPM quirk 2018-07-03 11:21:26 +02:00
atm atm: zatm: fix memcmp casting 2018-07-03 11:21:24 +02:00
auxdisplay
base driver core: Don't ignore class_dir_create_and_add() failure. 2018-07-03 11:21:25 +02:00
bcma
block cdrom: do not call check_disk_change() inside cdrom_open() 2018-05-30 07:49:13 +02:00
bluetooth Bluetooth: hci_qca: Avoid missing rampatch failure with userspace fw loader 2018-07-03 11:21:28 +02:00
bus bus: brcmstb_gisb: correct support for 64-bit address output 2018-04-13 19:50:05 +02:00
cdrom cdrom: do not call check_disk_change() inside cdrom_open() 2018-05-30 07:49:13 +02:00
char ipmi:bt: Set the timeout before doing a capabilities check 2018-07-03 11:21:28 +02:00
clk clk: samsung: exynos3250: Fix PLL rates 2018-05-30 07:49:16 +02:00
clocksource clocksource/drivers/fsl_ftm_timer: Fix error return checking 2018-05-30 07:49:01 +02:00
connector
cpufreq cpufreq: Fix new policy initialization during limits updates via sysfs 2018-07-03 11:21:26 +02:00
cpuidle cpuidle: powernv: Fix promotion from snooze if next state disabled 2018-07-03 11:21:29 +02:00
crypto crypto: vmx - Remove overly verbose printk from AES init routines 2018-06-16 09:54:27 +02:00
dca
devfreq
dio
dma dmaengine: usb-dmac: fix endless loop in usb_dmac_chan_terminate_all() 2018-06-06 16:46:22 +02:00
dma-buf
edac EDAC, mv64x60: Fix an error handling path 2018-04-13 19:50:23 +02:00
eisa
extcon
firewire firewire-ohci: work around oversized DMA reads on JMicron controllers 2018-05-30 07:48:52 +02:00
firmware firmware: dmi_scan: Fix handling of empty DMI strings 2018-05-30 07:48:56 +02:00
fmc
fpga
gpio gpio: No NULL owner 2018-06-16 09:54:26 +02:00
gpu drm: set FMODE_UNSIGNED_OFFSET for drm files 2018-06-13 16:15:27 +02:00
hid HID: roccat: prevent an out of bounds read in kovaplus_profile_activated() 2018-05-30 07:48:54 +02:00
hsi HSI: ssi_protocol: double free in ssip_pn_xmit() 2018-03-24 10:58:42 +01:00
hv
hwmon hwmon: (pmbus/adm1275) Accept negative page register values 2018-05-30 07:49:13 +02:00
hwspinlock
hwtracing hwtracing: stm: fix build error on some arches 2018-06-06 16:46:23 +02:00
i2c i2c: rcar: revoke START request early 2018-06-06 16:46:22 +02:00
ide cdrom: do not call check_disk_change() inside cdrom_open() 2018-05-30 07:49:13 +02:00
idle
iio iio:buffer: make length types match kfifo types 2018-07-03 11:21:30 +02:00
infiniband RDMA/mlx4: Discard unknown SQP work requests 2018-07-03 11:21:29 +02:00
input Input: elan_i2c - add ELAN0612 (Lenovo v330 14IKB) ACPI ID 2018-06-16 09:54:27 +02:00
iommu x86/cpufeature: Remove unused and seldomly used cpu_has_xx macros 2018-06-16 09:54:24 +02:00
ipack
irqchip irqchip/gic-v3: Change pr_debug message to pr_devel 2018-05-30 07:48:57 +02:00
isdn isdn: eicon: fix a missing-check bug 2018-06-13 16:15:28 +02:00
leds leds: pca955x: Correct I2C Functionality 2018-04-13 19:50:09 +02:00
lguest
lightnvm
macintosh
mailbox
mcb
md bcache: quit dc->writeback_thread when BCACHE_DEV_DETACHING is set 2018-05-30 07:49:11 +02:00
media media: cx25821: prevent out-of-bounds read on array card 2018-05-30 07:49:15 +02:00
memory
memstick
message scsi: mptfusion: Add bounds check in mptctl_hp_targetinfo() 2018-05-30 07:48:58 +02:00
mfd mfd: palmas: Reset the POWERHOLD mux during power off 2018-03-24 10:58:44 +01:00
misc vmw_balloon: fixing double free when batching mode is off 2018-06-16 09:54:26 +02:00
mmc mmc: sdhci-iproc: fix 32bit writes for TRANSFER_MODE register 2018-05-30 07:48:51 +02:00
mtd mtd: cfi_cmdset_0002: Avoid walking all chips when unlocking. 2018-07-03 11:21:30 +02:00
net bonding: re-evaluate force_primary when the primary slave name changes 2018-07-03 11:21:25 +02:00
nfc NFC: nfcmrvl: double free on error path 2018-03-22 09:23:23 +01:00
ntb ntb_transport: Fix bug with max_mw_size parameter 2018-05-30 07:48:55 +02:00
nubus
nvdimm linvdimm, pmem: Preserve read-only setting for pmem devices 2018-07-03 11:21:31 +02:00
nvme nvme-pci: Fix nvme queue cleanup if IRQ setup fails 2018-05-30 07:49:01 +02:00
nvmem
of of: unittest: for strings, account for trailing \0 in property length field 2018-07-03 11:21:29 +02:00
oprofile
parisc parisc/pci: Switch LBA PCI bus from Hard Fail to Soft Fail mode 2018-05-30 07:49:10 +02:00
parport parport_pc: Add support for WCH CH382L PCI-E single parallel port card. 2018-04-08 11:52:00 +02:00
pci PCI: pciehp: Clear Presence Detect and Data Link Layer Status Changed on resume 2018-07-03 11:21:30 +02:00
pcmcia
perf drivers/perf: arm_pmu: handle no platform_device 2018-03-22 09:23:26 +01:00
phy
pinctrl pinctrl: Really force states during suspend/resume 2018-03-24 10:58:48 +01:00
platform platform/chrome: Use proper protocol transfer function 2018-03-24 10:58:47 +01:00
pnp
power power: supply: pda_power: move from timer to delayed_work 2018-03-24 10:58:45 +01:00
powercap PowerCap: Fix an error code in powercap_register_zone() 2018-04-13 19:50:05 +02:00
pps
ps3
ptp time: Change posix clocks ops interfaces to use timespec64 2018-03-24 10:58:40 +01:00
pwm pwm: tegra: Increase precision in PWM rate calculation 2018-03-22 09:23:27 +01:00
rapidio
ras
regulator regulator: of: Add a missing 'of_node_put()' in an error handling path of 'of_regulator_match()' 2018-05-30 07:49:17 +02:00
remoteproc
reset
rpmsg
rtc rtc: tx4939: avoid unintended sign extension on a 24 bit shift 2018-05-30 07:49:14 +02:00
s390 scsi: zfcp: fix missing REC trigger trace on enqueue without ERP thread 2018-07-03 11:21:31 +02:00
sbus
scsi scsi: qla2xxx: Fix setting lower transfer speed if GPSC fails 2018-07-03 11:21:31 +02:00
sfi
sh
sn
soc
spi spi: pxa2xx: Allow 64-bit DMA 2018-05-26 08:48:52 +02:00
spmi
ssb
staging staging: rtl8192u: return -ENOMEM on failed allocation of priv->oldaddr 2018-05-30 07:49:14 +02:00
target tcm_fileio: Prevent information leak for short reads 2018-03-24 10:58:45 +01:00
tc
thermal thermal: imx: Fix race condition in imx_thermal_probe() 2018-04-24 09:32:08 +02:00
thunderbolt thunderbolt: Resume control channel after hibernation image is created 2018-04-24 09:32:07 +02:00
tty serial: sh-sci: Use spin_{try}lock_irqsave instead of open coding version 2018-07-03 11:21:26 +02:00
uio
usb usb: do not reset if a low-speed or full-speed device timed out 2018-07-03 11:21:27 +02:00
uwb
vfio vfio/pci: Virtualize Maximum Read Request Size 2018-04-24 09:32:09 +02:00
vhost vhost: correctly remove wait queue during poll failure 2018-04-13 19:50:25 +02:00
video fbdev: Fixing arbitrary kernel leak in case FBIOGETCMAP_SPARC in sbusfb_ioctl_helper(). 2018-05-30 07:49:04 +02:00
virt
virtio
vlynq
vme
w1 1wire: family module autoload fails because of upper/lower case mismatch. 2018-07-03 11:21:27 +02:00
watchdog watchdog: f71808e_wdt: Fix magic close handling 2018-05-30 07:49:03 +02:00
xen xen/acpi: off by one in read_acpi_id() 2018-05-30 07:49:09 +02:00
zorro zorro: Set up z->dev.dma_mask for the DMA API 2018-05-30 07:49:11 +02:00
Kconfig
Makefile