diff options
| author | Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> | 2025-02-25 14:02:48 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-03-03 12:20:14 +0300 |
| commit | 552ca6b87e3778f3dd5b87842f95138162e16c82 (patch) | |
| tree | cb88615cd0a0e6187da88c2b49b1d97cdb453218 | |
| parent | e0c92440938930e7fa7aa6362780d39cdea34449 (diff) | |
| download | linux-552ca6b87e3778f3dd5b87842f95138162e16c82.tar.xz | |
usb: renesas_usbhs: Flush the notify_hotplug_work
When performing continuous unbind/bind operations on the USB drivers
available on the Renesas RZ/G2L SoC, a kernel crash with the message
"Unable to handle kernel NULL pointer dereference at virtual address"
may occur. This issue points to the usbhsc_notify_hotplug() function.
Flush the delayed work to avoid its execution when driver resources are
unavailable.
Fixes: bc57381e6347 ("usb: renesas_usbhs: use delayed_work instead of work_struct")
Cc: stable <stable@kernel.org>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://lore.kernel.org/r/20250225110248.870417-4-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/renesas_usbhs/common.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c index 6c7857b66a21..4b35ef216125 100644 --- a/drivers/usb/renesas_usbhs/common.c +++ b/drivers/usb/renesas_usbhs/common.c @@ -781,6 +781,8 @@ static void usbhs_remove(struct platform_device *pdev) dev_dbg(&pdev->dev, "usb remove\n"); + flush_delayed_work(&priv->notify_hotplug_work); + /* power off */ if (!usbhs_get_dparam(priv, runtime_pwctrl)) usbhsc_power_ctrl(priv, 0); |