[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH] pci: Set err to errp directly rather than throu
From: |
Igor Mammedov |
Subject: |
Re: [Qemu-devel] [PATCH] pci: Set err to errp directly rather than through error_porpagate() |
Date: |
Fri, 26 May 2017 11:43:20 +0200 |
On Fri, 26 May 2017 16:29:25 +0800
Mao Zhongyi <address@hidden> wrote:
> ioh3420_interrupts_init() and its callers, rp_realize() and
> pci_qdev_realize() fill error message to local_err, then
> propagate it to errp by error_porpagate(), which's not necessary.
> So eliminate it and pass errp directly instead of local_err.
> Of course, error_propagate() also will be removed.
>
> Signed-off-by: Mao Zhongyi <address@hidden>
> ---
[...]
> diff --git a/hw/pci/pci.c b/hw/pci/pci.c
> index 98ccc27..0d4a3ff 100644
> --- a/hw/pci/pci.c
> +++ b/hw/pci/pci.c
> @@ -1982,7 +1982,6 @@ static void pci_qdev_realize(DeviceState *qdev, Error
> **errp)
> {
> PCIDevice *pci_dev = (PCIDevice *)qdev;
> PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev);
> - Error *local_err = NULL;
> PCIBus *bus;
> bool is_default_rom;
>
> @@ -1999,9 +1998,8 @@ static void pci_qdev_realize(DeviceState *qdev, Error
> **errp)
> return;
>
> if (pc->realize) {
> - pc->realize(pci_dev, &local_err);
> - if (local_err) {
> - error_propagate(errp, local_err);
> + pc->realize(pci_dev, errp);
> + if (errp && *errp) {
> do_pci_unregister_device(pci_dev);
> return;
> }
> @@ -2014,9 +2012,8 @@ static void pci_qdev_realize(DeviceState *qdev, Error
> **errp)
> is_default_rom = true;
> }
>
> - pci_add_option_rom(pci_dev, is_default_rom, &local_err);
> - if (local_err) {
> - error_propagate(errp, local_err);
> + pci_add_option_rom(pci_dev, is_default_rom, errp);
> + if (errp && *errp) {
> pci_qdev_unrealize(DEVICE(pci_dev), NULL);
> return;
> }
dropping local_error here looks wrong since it's used
to check error status inside these functions and to undo
side effects in case of failure.
consider if caller pass errp = NULL
then error handling path won't be executed.
So keep the rest of the patch but drop above hunks.