Date:   Thu, 18 Aug 2022 15:59:32 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Isaac Manjarres <isaacmanjarres@...gle.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        Russell King <rmk+kernel@....linux.org.uk>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Saravana Kannan <saravanak@...gle.com>, stable@...nel.org,
        kernel-team@...roid.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] driver core: Fix bus_type.match() error handling

On Tue, Aug 16, 2022 at 06:12:30PM -0700, Isaac Manjarres wrote:
> > However, imx25-pdk fails to shut down when booting from usb
> > drive. I cross checked that this does not happen without the above patch.
> > 
> > Guenter
> 
> Can you please share the following for your imx25-pdk environment?
> qemu commandline, defconfig, dtb, and baseline kernel commit you're
> using for testing.
> 
It doesn't only affect imx25-pdk but also mcimx7d-sabre.
Problem is the same for both: Reboot after booting from
usb drive doesn't work; the system is stuck in shutdown.
Typical tail of log sequence:

Requesting system reboot
sd 0:0:0:0: [sda] Synchronizing SCSI cache
ci_hdrc ci_hdrc.1: remove, state 4
usb usb2: USB disconnect, device number 1
ci_hdrc ci_hdrc.1: USB bus 2 deregistered
ci_hdrc ci_hdrc.0: remove, state 1
usb usb1: USB disconnect, device number 1
usb 1-1: USB disconnect, device number 2
sd 0:0:0:0: [sda] Synchronizing SCSI cache
sd 0:0:0:0: [sda] Synchronize Cache(10) failed: Result: hostbyte=0x01 driverbyte=DRIVER_OK

[ stuck here until qemu is killed ]

qemu command line:

qemu-system-arm -M imx25-pdk -m 128 \
     -kernel arch/arm/boot/zImage -no-reboot -snapshot \
     -usb -device usb-storage,drive=d0,bus=usb-bus.0 \
     -drive file=rootfs-armv5.ext2,if=none,id=d0,format=raw \
     --append "root=/dev/sda rootwait console=ttymxc0,115200" \
     -dtb arch/arm/boot/dts/imx25-pdk.dtb \
     -nographic -monitor null -serial stdio

Root file system is
https://github.com/groeck/linux-build-test/blob/master/rootfs/arm/rootfs-armv5.ext2.gz

defconfig is below.

Hope this helps,
Guenter

---
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_PREEMPT=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CGROUPS=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_EXPERT=y
CONFIG_PROFILING=y
CONFIG_ARCH_MULTI_V4T=y
CONFIG_ARCH_MULTI_V5=y
# CONFIG_ARCH_MULTI_V7 is not set
CONFIG_ARCH_MXC=y
CONFIG_SOC_IMX1=y
CONFIG_SOC_IMX25=y
CONFIG_SOC_IMX27=y
CONFIG_AEABI=y
CONFIG_PM_DEBUG=y
CONFIG_KPROBES=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_SWAP is not set
CONFIG_SLAB=y
# CONFIG_COMPAT_BRK is not set
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_PNP=y
# CONFIG_INET_DIAG is not set
# CONFIG_IPV6 is not set
CONFIG_NETFILTER=y
# CONFIG_WIRELESS is not set
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_PM_QOS_KUNIT_TEST=y
CONFIG_IMX_WEIM=y
CONFIG_MTD=y
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_CFI=y
CONFIG_MTD_CFI_ADV_OPTIONS=y
CONFIG_MTD_CFI_GEOMETRY=y
# CONFIG_MTD_MAP_BANK_WIDTH_1 is not set
# CONFIG_MTD_CFI_I2 is not set
CONFIG_MTD_CFI_INTELEXT=y
CONFIG_MTD_PHYSMAP=y
CONFIG_MTD_RAW_NAND=y
CONFIG_MTD_UBI=y
CONFIG_OF_UNITTEST=y
CONFIG_VIRTIO_BLK=y
CONFIG_EEPROM_AT25=y
CONFIG_BLK_DEV_SD=y
CONFIG_BLK_DEV_SR=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_SCSI_VIRTIO=y
CONFIG_ATA=y
CONFIG_PATA_IMX=y
CONFIG_NETDEVICES=y
CONFIG_VIRTIO_NET=y
CONFIG_CS89x0_PLATFORM=y
CONFIG_DM9000=y
CONFIG_SMC91X=y
CONFIG_SMC911X=y
CONFIG_SMSC911X=y
CONFIG_SMSC_PHY=y
CONFIG_USB_USBNET=y
# CONFIG_WLAN is not set
CONFIG_INPUT_EVDEV=y
CONFIG_KEYBOARD_GPIO=y
CONFIG_KEYBOARD_IMX=y
# CONFIG_INPUT_MOUSE is not set
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_TOUCHSCREEN_ADS7846=m
CONFIG_TOUCHSCREEN_MX25=y
CONFIG_TOUCHSCREEN_MC13783=y
# CONFIG_LEGACY_PTYS is not set
CONFIG_SERIAL_8250=m
CONFIG_SERIAL_IMX=y
CONFIG_SERIAL_IMX_CONSOLE=y
# CONFIG_HW_RANDOM is not set
CONFIG_SPI=y
CONFIG_SPI_IMX=y
CONFIG_SPI_SPIDEV=y
CONFIG_GPIO_SYSFS=y
CONFIG_GPIO_MXC=y
CONFIG_W1=y
CONFIG_W1_MASTER_MXC=y
CONFIG_W1_SLAVE_THERM=y
CONFIG_HWMON=m
CONFIG_SENSORS_MC13783_ADC=m
CONFIG_WATCHDOG=y
CONFIG_IMX2_WDT=y
CONFIG_MFD_MC13XXX_SPI=y
CONFIG_MFD_MX25_TSADC=y
CONFIG_REGULATOR=y
CONFIG_REGULATOR_FIXED_VOLTAGE=y
CONFIG_REGULATOR_GPIO=y
CONFIG_REGULATOR_MC13783=y
CONFIG_REGULATOR_MC13892=y
CONFIG_MEDIA_SUPPORT=y
CONFIG_V4L_PLATFORM_DRIVERS=y
CONFIG_V4L_MEM2MEM_DRIVERS=y
CONFIG_VIDEO_CODA=y
# CONFIG_DRM_DEBUG_MODESET_LOCK is not set
CONFIG_FB=y
CONFIG_FB_IMX=y
CONFIG_LCD_L4F00242T03=y
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_LOGO=y
CONFIG_SOUND=y
CONFIG_SND=y
# CONFIG_SND_ARM is not set
# CONFIG_SND_SPI is not set
CONFIG_SND_SOC=y
CONFIG_SND_IMX_SOC=y
CONFIG_USB_HID=m
CONFIG_USB=y
CONFIG_USB_XHCI_HCD=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_STORAGE=y
CONFIG_USB_UAS=y
CONFIG_USB_CHIPIDEA=y
CONFIG_USB_CHIPIDEA_UDC=y
CONFIG_USB_CHIPIDEA_HOST=y
CONFIG_USB_TEST=y
CONFIG_USB_EHSET_TEST_FIXTURE=y
CONFIG_USB_LINK_LAYER_TEST=y
CONFIG_NOP_USB_XCEIV=y
CONFIG_USB_GADGET=y
CONFIG_USB_ETH=m
CONFIG_MMC=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MMC_SDHCI_ESDHC_IMX=y
CONFIG_MMC_MXC=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_MC13783=y
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_TIMER=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_BACKLIGHT=y
CONFIG_LEDS_TRIGGER_GPIO=y
CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_IMXDI=y
CONFIG_RTC_DRV_MC13XXX=y
CONFIG_RTC_DRV_MXC=y
CONFIG_DMADEVICES=y
CONFIG_IMX_DMA=y
CONFIG_IMX_SDMA=y
CONFIG_DMATEST=y
CONFIG_VIRTIO_BALLOON=y
CONFIG_VIRTIO_MMIO=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_IIO=y
CONFIG_FSL_MX25_ADC=y
CONFIG_PWM=y
CONFIG_PWM_IMX1=y
CONFIG_PWM_IMX27=y
CONFIG_EXT3_FS=y
CONFIG_EXT4_KUNIT_TESTS=y
CONFIG_BTRFS_FS=y
# CONFIG_DNOTIFY is not set
CONFIG_ISO9660_FS=y
CONFIG_VFAT_FS=y
# CONFIG_PROC_PAGE_MONITOR is not set
CONFIG_TMPFS=y
CONFIG_JFFS2_FS=y
CONFIG_UBIFS_FS=y
CONFIG_SQUASHFS=y
CONFIG_SQUASHFS_XATTR=y
CONFIG_SQUASHFS_4K_DEVBLK_SIZE=y
CONFIG_NFS_FS=y
CONFIG_ROOT_NFS=y
CONFIG_NLS_CODEPAGE_437=m
CONFIG_NLS_CODEPAGE_850=m
CONFIG_NLS_ISO8859_1=y
CONFIG_NLS_ISO8859_15=m
# CONFIG_CRYPTO_MANAGER_DISABLE_TESTS is not set
CONFIG_CRC32_SELFTEST=y
CONFIG_GLOB_SELFTEST=y
CONFIG_FONTS=y
CONFIG_FONT_8x8=y
CONFIG_DEBUG_INFO_DWARF5=y
CONFIG_KFENCE=y
CONFIG_PROVE_LOCKING=y
CONFIG_DEBUG_LOCKDEP=y
CONFIG_DEBUG_ATOMIC_SLEEP=y
CONFIG_DEBUG_LOCKING_API_SELFTESTS=y
CONFIG_WW_MUTEX_SELFTEST=y
CONFIG_DEBUG_LIST=y
CONFIG_RCU_EQS_DEBUG=y
CONFIG_KUNIT=y
CONFIG_KUNIT_TEST=y
CONFIG_TEST_SORT=y
CONFIG_RBTREE_TEST=y
CONFIG_INTERVAL_TREE_TEST=y
CONFIG_STRING_SELFTEST=y
CONFIG_TEST_BITMAP=y
CONFIG_TEST_UUID=y
CONFIG_TEST_FIRMWARE=y
CONFIG_TEST_SYSCTL=y
CONFIG_RESOURCE_KUNIT_TEST=y
CONFIG_SYSCTL_KUNIT_TEST=y
CONFIG_LIST_KUNIT_TEST=y
CONFIG_CMDLINE_KUNIT_TEST=y
CONFIG_MEMCPY_KUNIT_TEST=y

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