The only usage is to pass its address to devm_phy_create() which takes a
const pointer. Make it const to allow the compiler to put it in
read-only memory.
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Link: https://lore.kernel.org/r/20200823220025.17588-2-rikard.falkeborn@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add initial support for imx8mp usb phy support, imx8mp usb has
a silimar phy as imx8mq, which has some different customizations
on clock and low power design when SoC integration.
Signed-off-by: Li Jun <jun.li@nxp.com>
Link: https://lore.kernel.org/r/1598276014-2377-2-git-send-email-jun.li@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
AM654x PG1.0 has a silicon bug that D+ is pulled high after POR, which
could cause enumeration failure with some USB hubs. Disabling the
USB2_PHY Charger Detect function will put D+ into the normal state.
This addresses Silicon Errata:
i2075 - "USB2PHY: USB2PHY Charger Detect is Enabled by Default Without VBUS
Presence"
Signed-off-by: Roger Quadros <rogerq@ti.com>
Tested-by: Jan Kiszka <jan.kiszka@siemens.com>
Link: https://lore.kernel.org/r/20200824075127.14902-2-rogerq@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
There were some problem in ipq8074 Gen2 PCIe phy init sequence.
1. Few register values were wrongly updated in the phy init sequence.
2. The register QSERDES_RX_SIGDET_CNTRL is a RX tuning parameter
register which is added in serdes table causing the wrong register
was getting updated.
3. Clocks and resets were not added in the phy init.
Fix these to make Gen2 PCIe port on ipq8074 devices to work.
Fixes: eef243d04b ("phy: qcom-qmp: Add support for IPQ8074")
Cc: stable@vger.kernel.org
Co-developed-by: Selvam Sathappan Periakaruppan <speriaka@codeaurora.org>
Signed-off-by: Selvam Sathappan Periakaruppan <speriaka@codeaurora.org>
Signed-off-by: Sivaprakash Murugesan <sivaprak@codeaurora.org>
Link: https://lore.kernel.org/r/1596036607-11877-4-git-send-email-sivaprak@codeaurora.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Update PCIe serdes config to latest suggested for
hardware. This fixes cases of failure to enumerate
in Gen2 mode with some cards.
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Link: https://lore.kernel.org/r/20200727194603.44636-4-nsekhar@ti.com
[fix typo threshold]
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Checking return value after each regfield write becomes
hard to read quickly as number of writes increase.
Simplify by checking for error only once.
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Link: https://lore.kernel.org/r/20200727194603.44636-3-nsekhar@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
regfield handling in current driver code is made complicated
by having a separate regfield variable for each field which
is allocated individually.
This quickly gets unwieldy once number of regfields increase.
Instead, use an array of regfields which are allocated in a
loop.
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Link: https://lore.kernel.org/r/20200727194603.44636-2-nsekhar@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Instead of a busy waiting while loop using udelay
use readl_poll_timeout function to check the condition
is met or timeout occurs in crport_handshake function.
readl_poll_timeout is called in non atomic context so
it safe to sleep until the condition is met.
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Link: https://lore.kernel.org/r/20200720173502.542-1-linux.amoon@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
In case of error, the function devm_ioremap() returns NULL pointer not
ERR_PTR(). The IS_ERR() test in the return value check should be
replaced with NULL test.
Fixes: ef19b117b8 ("phy: qualcomm: add qcom ipq806x dwc usb phy driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20200723113622.136752-1-weiyongjun1@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Remove .owner field if calls are used which set it automatically
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20200725031624.31432-1-yuehaibing@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Currently when reading of the device property for "qcom,tx-deamp_3_5db"
fails the default is being assigned incorrectly to phy_dwc3->rx_eq. This
looks like a copy-n-paste error and in fact should be assigning the
default instead to phy_dwc3->tx_deamp_3_5db
Addresses-Coverity: ("Copy-paste error")
Fixes: ef19b117b8 ("phy: qualcomm: add qcom ipq806x dwc usb phy driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200721150613.416876-1-colin.king@canonical.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The mvneta hardware appears to lock up in various random ways when
repeatedly switching speeds between 1G and 2.5G, which involves
reprogramming the COMPHY. It is not entirely clear why this happens,
but best guess is that reprogramming the COMPHY glitches mvneta clocks
causing the hardware to fail. It seems that rebooting resolves the
failure, but not down/up cycling the interface alone.
Various other approaches have been tried, such as trying to cleanly
power down the COMPHY and then take it back through the power up
initialisation, but this does not seem to help.
It was finally noticed that u-boot's last step when configuring a
COMPHY for "SGMII" mode was to poke at a register described as
"GBE_CONFIGURATION_REG", which is undocumented in any external
documentation. All that we have is the fact that u-boot sets a bit
corresponding to the "SGMII" lane at the end of COMPHY initialisation.
Experimentation shows that if we clear this bit prior to changing the
speed, and then set it afterwards, mvneta does not suffer this problem
on the SolidRun Clearfog when switching speeds between 1G and 2.5G.
This problem was found while script-testing phylink.
This fix also requires the corresponding change to DT to be effective.
See "ARM: dts: armada-38x: fix NETA lockup when repeatedly switching
speeds".
Fixes: 14dc100b44 ("phy: armada38x: add common phy support")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/E1jxtRj-0003Tz-CG@rmk-PC.armlinux.org.uk
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Fix IS_ERR argument in samsung_ufs_phy_symbol_clk_init(). The proper
argument to be passed to IS_ERR() is phy->rx1_symbol_clk.
This bug was detected with the help of Coccinelle.
Fixes: bca21e9304 ("phy: samsung-ufs: add UFS PHY driver for samsung SoC")
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Link: https://lore.kernel.org/r/20200720132718.GA13413@embeddedor
Signed-off-by: Vinod Koul <vkoul@kernel.org>
If CONFIG_DEBUG_SHIRQ was enabled, r8a77951-salvator-xs could boot
correctly. If we appended "earlycon keep_bootcon" to the kernel
command like, we could get kernel log like below.
SError Interrupt on CPU0, code 0xbf000002 -- SError
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.8.0-rc3-salvator-x-00505-g6c843129e6faaf01 #785
Hardware name: Renesas Salvator-X 2nd version board based on r8a77951 (DT)
pstate: 60400085 (nZCv daIf +PAN -UAO BTYPE=--)
pc : rcar_gen3_phy_usb2_irq+0x14/0x54
lr : free_irq+0xf4/0x27c
This means free_irq() calls the interrupt handler while PM runtime
is not getting if DEBUG_SHIRQ is enabled and rcar_gen3_phy_usb2_probe()
failed. To fix the issue, move the irq registration place to
rcar_gen3_phy_usb2_init() which is ready to handle the interrupts.
Note that after the commit 549b6b55b0 ("phy: renesas: rcar-gen3-usb2:
enable/disable independent irqs") which is merged into v5.2, since this
driver creates multiple phy instances, needs to check whether one of
phy instances is initialized. However, if we backport this patch to v5.1
or less, we don't need to check it because such kernel have single
phy instance.
Reported-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Fixes: 9f391c574e ("phy: rcar-gen3-usb2: add runtime ID/VBUS pin detection")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/1594986297-12434-2-git-send-email-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This has lost in the original push for the dwc3 qcom driver.
This is needed for ipq806x SoC as without this the usb ports
doesn't work at all.
Signed-off-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Tested-by: Jonathan McDowell <noodles@earth.li>
Link: https://lore.kernel.org/r/20200717131635.11076-1-ansuelsmth@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This patch introduces Samsung UFS PHY driver. This driver
supports to deal with phy calibration and power control
according to UFS host driver's behavior.
[Robot: -Wmissing-prototypes and -Wsometimes-uninitialized]
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: Seungwon Jeon <essuuj@gmail.com>
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Vinod Koul <vkoul@kernel.org>
Tested-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Link: https://lore.kernel.org/r/20200716192217.35740-2-alim.akhtar@samsung.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Driver uses GPIO functions but doesn't include the header explcitly. Add
that to fix build errors when GPIOLIB is disabled.
drivers/phy/allwinner/phy-sun4i-usb.c:367:11: error: implicit
declaration of function ‘gpiod_get_value_cansleep’; did you mean
‘gpio_get_value_cansleep’? [-Werror=implicit-function-declaration]
drivers/phy/allwinner/phy-sun4i-usb.c:707:22: error: implicit
declaration of function ‘devm_gpiod_get_optional’; did you mean
‘devm_clk_get_optional’? [-Werror=implicit-function-declaration]
drivers/phy/allwinner/phy-sun4i-usb.c:708:11: error: ‘GPIOD_IN’
undeclared (first use in this function); did you mean ‘GPIOF_IN’?
drivers/phy/allwinner/phy-sun4i-usb.c:815:21: error: implicit
declaration of function ‘gpiod_to_irq’; did you mean ‘gpio_to_irq’?
[-Werror=implicit-function-declaration]
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Link: https://lore.kernel.org/r/20200716062427.71763-1-vkoul@kernel.org
devm_clk_get() and devm_reset_control_get() expect a const char *id for
the last arg, but a value of zero was provided. This results in below
sparse warning:
drivers/phy/st/phy-stm32-usbphyc.c:330:42: warning: Using plain integer as NULL pointer
drivers/phy/st/phy-stm32-usbphyc.c:343:52: warning: Using plain integer as NULL pointer
Instead of zero, use NULL
Reviewed-by: Amelie Delaunay <amelie.delaunay@st.com>
Link: https://lore.kernel.org/r/20200708132809.265967-6-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
We get warning with W=1 build:
drivers/phy/samsung/phy-exynos5-usbdrd.c:211: warning: Function
parameter or member 'phys' not described in 'exynos5_usbdrd_phy'
drivers/phy/samsung/phy-exynos5-usbdrd.c:211: warning: Function
parameter or member 'vbus' not described in 'exynos5_usbdrd_phy'
drivers/phy/samsung/phy-exynos5-usbdrd.c:211: warning: Function
parameter or member 'vbus_boost' not described in 'exynos5_usbdrd_phy'
These members are provided with description but format is not quite
right resulting in above warnings
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20200708132809.265967-5-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
We get warning with W=1 build:
drivers/phy/rockchip/phy-rockchip-typec.c:360: warning: cannot
understand function prototype: 'struct rockchip_usb3phy_port_cfg '
The 'struct rockchip_usb3phy_port_cfg ' is commented properly but uses
wrong format, so fix that up
Link: https://lore.kernel.org/r/20200708132809.265967-4-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
We get warning with W=1 build:
drivers/phy/phy-xgene.c: In function ‘xgene_phy_xlate’:
drivers/phy/phy-xgene.c:1618:20: warning: comparison of unsigned
expression in ‘< 0’ is always false [-Wtype-limits]
1618 | if (args->args[0] < MODE_SATA || args->args[0] >= MODE_MAX) |
args is uint32_t so can never be less than zero, so remove this check
Link: https://lore.kernel.org/r/20200708132809.265967-3-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
We get warning with W=1 build:
drivers/phy/motorola/phy-mapphone-mdm6600.c:185: warning: Function
parameter or member 'val' not described in 'phy_mdm6600_cmd'
drivers/phy/motorola/phy-mapphone-mdm6600.c:200: warning: Function
parameter or member 'work' not described in 'phy_mdm6600_status'
Fix that by adding description for 'val' and 'work'
Link: https://lore.kernel.org/r/20200708132809.265967-2-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
We get warning with W=1 build:
drivers/phy/marvell/phy-mvebu-a3700-utmi.c:84: warning: Function
parameter or member 'usb_misc' not described in 'mvebu_a3700_utmi'
Fix that by correcting the typo usb_mis
Link: https://lore.kernel.org/r/20200708132809.265967-1-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
PHY calibration is needed only for USB2.0 (UTMI) PHY, so skip calling
calibration code when phy_calibrate() is called for USB3.0 (PIPE3) PHY.
Fixes: d8c80bb3b5 ("phy: exynos5-usbdrd: Calibrate LOS levels for exynos5420/5800")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200708133800.3336-1-m.szyprowski@samsung.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
When CONFIG_ARCH_SUNXI is not set but CONFIG_COMPILE_TEST=y,
CONFIG_HAVE_CLK=y, CONFIG_HAVE_LEGACY_CLK=y, there exists
the following build errors with CONFIG_PHY_SUN6I_MIPI_DPHY=y:
drivers/phy/allwinner/phy-sun6i-mipi-dphy.o: In function `sun6i_dphy_init':
phy-sun6i-mipi-dphy.c:(.text+0x320): undefined reference to `clk_set_rate_exclusive'
drivers/phy/allwinner/phy-sun6i-mipi-dphy.o: In function `sun6i_dphy_exit':
phy-sun6i-mipi-dphy.c:(.text+0x2c8): undefined reference to `clk_rate_exclusive_put'
clk_set_rate_exclusive() and clk_rate_exclusive_put() are defined
in drivers/clk/clk.c, this file is built under CONFIG_COMMON_CLK,
so in order to build drivers/phy/allwinner/phy-sun6i-mipi-dphy.c
successful used with various configs, CONFIG_PHY_SUN6I_MIPI_DPHY
should depend on CONFIG_COMMON_CLK.
Fixes: 133552bf03 ("phy: Remove CONFIG_ARCH_* check for related subdir in Makefile")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Link: https://lore.kernel.org/r/1594113746-25393-1-git-send-email-yangtiezhu@loongson.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
It fixes RX detect wakeup using USB3 device, otherwise, the USB3
device can't wakeup USB PHY when the PHY is in 32Khz clock.
Fixes: 50d35aa8c1 ("phy: cadence: salvo: add salvo phy driver")
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Link: https://lore.kernel.org/r/20200703064600.14181-1-peter.chen@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
sun6i_dphy_ops and sun6i_dphy_regmap_config are not modified so make them
const structs to allow the compiler to put them in read-only memory.
Before:
text data bss dec hex filename
4407 1944 64 6415 190f drivers/phy/allwinner/phy-sun6i-mipi-dphy.o
After:
text data bss dec hex filename
4835 1496 64 6395 18fb drivers/phy/allwinner/phy-sun6i-mipi-dphy.o
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20200629195727.9717-1-rikard.falkeborn@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
ti_pipe3_power_on() sets variable 'ret' but never uses it, so remove it.
drivers/phy/ti/phy-ti-pipe3.c:340:6: warning: variable ‘ret’ set but not
used [-Wunused-but-set-variable]
Link: https://lore.kernel.org/r/20200629145010.122675-4-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
dm816x_usb_phy_init() sets variable 'error' but never uses it, so remove
it.
drivers/phy/ti/phy-dm816x-usb.c:85:6: warning: variable ‘error’ set but
not used [-Wunused-but-set-variable]
Link: https://lore.kernel.org/r/20200629145010.122675-3-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Some function arguments are missing from documentation prompting
validation kernel doc script to complain:
drivers/phy/phy-core.c:1078: warning: Function parameter or member
'children' not described in '__devm_of_phy_provider_register'
drivers/phy/phy-core.c:1125: warning: Function parameter or member
'phy_provider' not described in 'devm_of_phy_provider_unregister'
Add the documentation for these
Link: https://lore.kernel.org/r/20200629145010.122675-2-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Documentation/process/coding-style.rst says:
"functions: they have the opening brace at the beginning of the next
line"
devm_of_phy_provider_unregister() function has opening brace at same
line, so fix it up.
Link: https://lore.kernel.org/r/20200629145010.122675-1-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The UFS specific QMP PHY driver started off supporting the 14nm and
20nm hardware. With the 20nm support marked broken for a long time and
the 14nm support added to the common QMP PHY, this driver has not been
used in a while. So delete it
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20200629145452.123035-1-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Mark xpsgtr_suspend and xpsgtr_resume as __maybe_unused to fix the
following compiler warning when building with !CONFIG_PM_SLEEP:
drivers/phy/xilinx/phy-zynqmp.c:830:12: warning: ‘xpsgtr_resume’ defined but not used [-Wunused-function]
830 | static int xpsgtr_resume(struct device *dev)
| ^~~~~~~~~~~~~
drivers/phy/xilinx/phy-zynqmp.c:819:12: warning: ‘xpsgtr_suspend’ defined but not used [-Wunused-function]
819 | static int xpsgtr_suspend(struct device *dev)
| ^~~~~~~~~~~~~~
Also drop the existing #ifdef CONFIG_PM so the functions are always
compile-checked regardless of CONFIG_PM and/or CONFIG_PM_SLEEP being
set.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Link: https://lore.kernel.org/r/20200701141017.26931-1-tklauser@distanz.ch
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Xilinx ZynqMP SoCs have a Gigabit Transceiver with four lanes. All the
high speed peripherals such as USB, SATA, PCIE, Display Port and
Ethernet SGMII can rely on any of the four GT lanes for PHY layer. This
patch adds driver for that ZynqMP GT core.
Signed-off-by: Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/20200629120054.29338-3-laurent.pinchart@ideasonboard.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The set mode handler is used to keep track of the current role of the
device. This is used for enabling certain resources within the PHY
depending on if the device is behaving as a host or device.
Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
Link: https://lore.kernel.org/r/20200625195444.15130-3-wcheng@codeaurora.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Allow for the PHY to be put into a powered down state when possible.
Add the required suspend and resume callbacks, which will determine
what resources can be turned off depending on the cable status.
Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
Link: https://lore.kernel.org/r/20200625195444.15130-2-wcheng@codeaurora.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add both the DP and UNI PHY for primary/secondary usb controllers.
The tables are very similar to sm8150 (serdes_tbl is identical), but there
are some differences.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20200524021416.17049-4-jonathan@marek.ca
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add support for the USB3 PHY used by the secondary usb controller on sm8150
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20200524021416.17049-3-jonathan@marek.ca
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The primary USB PHY on sm8250 sets some values differently for the second
lane. This makes it possible to represent that.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20200524021416.17049-2-jonathan@marek.ca
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Currently pointer phy0 is being dereferenced via the assignment of
phy on the call to phy_get_drvdata before phy0 is null checked, this
can lead to a null pointer dereference. Fix this by performing the
null check on phy0 before the call to phy_get_drvdata. Also replace
the phy0 == NULL check with the more usual !phy0 idiom.
Addresses-Coverity: ("Dereference before null check")
Fixes: e6f32efb1b ("phy: sun4i-usb: Make sure to disable PHY0 passby for peripheral mode")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200625124428.83564-1-colin.king@canonical.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
