diff options
| author | Will Deacon | 2023-03-29 22:24:56 +0800 |
|---|---|---|
| committer | Tom Rini | 2023-04-25 11:53:15 -0400 |
| commit | da4e8bb09d6ea33618335106ea6a1fc515128123 (patch) | |
| tree | d4e4664fc161fb2f7056b1dc9899590b8a389e0c /drivers/virtio | |
| parent | 7804306c800112390a35af9c777bda86465a7be5 (diff) | |
virtio: pci: Tear down VQs in virtio_pci_reset()
The pages backing the virtqueues for virtio PCI devices are not freed
on reset, despite the virtqueue structure being freed as part of the
driver '->priv_auto' destruction at ->remove() time.
Call virtio_pci_del_vqs() from virtio_pci_reset() to free the virtqueue
pages before freeing the virtqueue structure itself.
Signed-off-by: Will Deacon <willdeacon@google.com>
[ Paul: pick from the Android tree. Rebase to the upstream ]
Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Link: https://android.googlesource.com/platform/external/u-boot/+/5ed54ccd83cbffd0d8719ce650604b4e44b5b0d8
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/virtio')
| -rw-r--r-- | drivers/virtio/virtio_pci_modern.c | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c index cfde4007f5e..3cdc2d2d6fd 100644 --- a/drivers/virtio/virtio_pci_modern.c +++ b/drivers/virtio/virtio_pci_modern.c @@ -218,25 +218,6 @@ static int virtio_pci_set_status(struct udevice *udev, u8 status) return 0; } -static int virtio_pci_reset(struct udevice *udev) -{ - struct virtio_pci_priv *priv = dev_get_priv(udev); - - /* 0 status means a reset */ - iowrite8(0, &priv->common->device_status); - - /* - * After writing 0 to device_status, the driver MUST wait for a read - * of device_status to return 0 before reinitializing the device. - * This will flush out the status write, and flush in device writes, - * including MSI-X interrupts, if any. - */ - while (ioread8(&priv->common->device_status)) - udelay(1000); - - return 0; -} - static int virtio_pci_get_features(struct udevice *udev, u64 *features) { struct virtio_pci_priv *priv = dev_get_priv(udev); @@ -363,6 +344,25 @@ static int virtio_pci_find_vqs(struct udevice *udev, unsigned int nvqs, return 0; } +static int virtio_pci_reset(struct udevice *udev) +{ + struct virtio_pci_priv *priv = dev_get_priv(udev); + + /* 0 status means a reset */ + iowrite8(0, &priv->common->device_status); + + /* + * After writing 0 to device_status, the driver MUST wait for a read + * of device_status to return 0 before reinitializing the device. + * This will flush out the status write, and flush in device writes, + * including MSI-X interrupts, if any. + */ + while (ioread8(&priv->common->device_status)) + udelay(1000); + + return virtio_pci_del_vqs(udev); +} + static int virtio_pci_notify(struct udevice *udev, struct virtqueue *vq) { struct virtio_pci_priv *priv = dev_get_priv(udev); |