Re: [PATCH v2] PCI: Add dummy implement for pci_clear_master() function

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Hi,


Thanks a lot.

Can you receive my email?

I reply several email to you, but Thunderbird told me that may mail is returned.

Maybe you could read the content at lore.

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On 2023/6/1 01:28, Bjorn Helgaas wrote:
On Wed, May 31, 2023 at 06:27:44PM +0800, Sui Jingfeng wrote:
As some arch(m68k for example) doesn't have config_pci enabled, drivers[1]
call pci_clear_master() without config_pci guard can not pass compile test.

    drivers/gpu/drm/etnaviv/etnaviv_pci_drv.c:
    In function 'etnaviv_gpu_pci_fini':
drivers/gpu/drm/etnaviv/etnaviv_pci_drv.c:32:9:
    error: implicit declaration of function 'pci_clear_master';
    did you mean 'pci_set_master'? [-Werror=implicit-function-declaration]
       32 |         pci_clear_master(pdev);
          |         ^~~~~~~~~~~~~~~~
          |         pci_set_master
    cc1: some warnings being treated as errors

[1] https://patchwork.freedesktop.org/patch/539977/?series=118522&rev=1

V2:
	* Adjust commit log style to meet the convention and add Fixes tag

Fixes: 6a479079c072 ("PCI: Add pci_clear_master() as opposite of pci_set_master()")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202305301659.4guSLavL-lkp@xxxxxxxxx/
Reviewed-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Signed-off-by: Sui Jingfeng <suijingfeng@xxxxxxxxxxx>
Applied to pci/misc for v6.5 as follows:

   Author: Sui Jingfeng <suijingfeng@xxxxxxxxxxx>
   Date:   Wed May 31 18:27:44 2023 +0800

     PCI: Add pci_clear_master() stub for non-CONFIG_PCI
Add a pci_clear_master() stub when CONFIG_PCI is not set so drivers that
     support both PCI and platform devices don't need #ifdefs or extra Kconfig
     symbols for the PCI parts.
[bhelgaas: commit log]
     Fixes: 6a479079c072 ("PCI: Add pci_clear_master() as opposite of pci_set_master()")
     Link: https://lore.kernel.org/r/20230531102744.2354313-1-suijingfeng@xxxxxxxxxxx
     Signed-off-by: Sui Jingfeng <suijingfeng@xxxxxxxxxxx>
     Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
     Reviewed-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>

---
  include/linux/pci.h | 1 +
  1 file changed, 1 insertion(+)

diff --git a/include/linux/pci.h b/include/linux/pci.h
index d0c19ff0c958..71c85380676c 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1904,6 +1904,7 @@ static inline int pci_dev_present(const struct pci_device_id *ids)
  #define pci_dev_put(dev)	do { } while (0)
static inline void pci_set_master(struct pci_dev *dev) { }
+static inline void pci_clear_master(struct pci_dev *dev) { }
  static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; }
  static inline void pci_disable_device(struct pci_dev *dev) { }
  static inline int pcim_enable_device(struct pci_dev *pdev) { return -EIO; }
--
2.25.1




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