On 2014/9/15 22:00, Lucas Stach wrote: > Am Freitag, den 05.09.2014, 18:09 +0800 schrieb Yijing Wang: >> Currently, pcie-designware, pcie-rcar, pci-tegra drivers >> use irq chip_data to save the msi_chip pointer. They >> already call irq_set_chip_data() in their own MSI irq map >> functions. So irq_set_chip_data() in arch_setup_msi_irq() >> is useless. >> >> Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx> >> --- >> drivers/pci/msi.c | 2 -- >> 1 files changed, 0 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c >> index f6cb317..d547f7f 100644 >> --- a/drivers/pci/msi.c >> +++ b/drivers/pci/msi.c >> @@ -41,8 +41,6 @@ int __weak arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc) >> if (err < 0) >> return err; >> >> - irq_set_chip_data(desc->irq, chip); >> - >> return 0; >> } >> > > arch_teardown_msi_irq() expects to find the msi_chip in the irq > chip_data field. As this means drivers don't have any reasonable other > possibility to stuff things into this field, I think it would make sense > to do the cleanup the other way around: keep the irq_set_chip_data > arch_setup_msi_irq() and rip it out of the individual drivers. Hi Lucas, thanks for your review and comments! irq_set_chip_data() should not be placed in MSI core functions, because other arch like x86, use irq_data->chip_data to stores irq_cfg. So how to set the chip_data is arch dependent. And this series is mainly to use MSI chip framework in all platforms. Currently, only ARM platform MSI drivers use the chip_data to store msi_chip, and the drivers call irq_set_chip_data() in their driver already. So I thought we should clean up it in MSI core code. Thanks! Yijing. > > Regards, > Lucas > -- Thanks! Yijing
