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  1. 08 Jul, 2023 10 commits
    • Cai Huoqing's avatar
      ntb: epf: Remove redundant pci_clear_master · f2748c6d
      Cai Huoqing authored 
      Remove pci_clear_master to simplify the code,
the bus-mastering is also cleared in do_pci_disable_device,
like this:
./drivers/pci/pci.c:2197
static void do_pci_disable_device(struct pci_dev *dev)
{
	u16 pci_command;

	pci_read_config_word(dev, PCI_COMMAND, &pci_command);
	if (pci_command & PCI_COMMAND_MASTER) {
		pci_command &= ~PCI_COMMAND_MASTER;
		pci_write_config_word(dev, PCI_COMMAND, pci_command);
	}

	pcibios_disable_device(dev);
}.
And dev->is_busmaster is set to 0 in pci_disable_device.
Signed-off-by: default avatarCai Huoqing <cai.huoqing@linux.dev>
Signed-off-by: default avatarJon Mason <jdmason@kudzu.us>
      f2748c6d
    • Cai Huoqing's avatar
      ntb_hw_amd: Remove redundant pci_clear_master · da6b4dc4
      Cai Huoqing authored 
      Remove pci_clear_master to simplify the code,
the bus-mastering is also cleared in do_pci_disable_device,
like this:
./drivers/pci/pci.c:2197
static void do_pci_disable_device(struct pci_dev *dev)
{
	u16 pci_command;

	pci_read_config_word(dev, PCI_COMMAND, &pci_command);
	if (pci_command & PCI_COMMAND_MASTER) {
		pci_command &= ~PCI_COMMAND_MASTER;
		pci_write_config_word(dev, PCI_COMMAND, pci_command);
	}

	pcibios_disable_device(dev);
}.
And dev->is_busmaster is set to 0 in pci_disable_device.
Signed-off-by: default avatarCai Huoqing <cai.huoqing@linux.dev>
Signed-off-by: default avatarJon Mason <jdmason@kudzu.us>
      da6b4dc4
    • Bjorn Helgaas's avatar
      ntb: idt: drop redundant pci_enable_pcie_error_reporting() · cb2a6d17
      Bjorn Helgaas authored 
      pci_enable_pcie_error_reporting() enables the device to send ERR_*
Messages.  Since f26e58bf ("PCI/AER: Enable error reporting when AER is
native"), the PCI core does this for all devices during enumeration, so the
driver doesn't need to do it itself.

Remove the redundant pci_enable_pcie_error_reporting() call from the
driver.  Also remove the corresponding pci_disable_pcie_error_reporting()
from the driver .remove() path.

Note that this only controls ERR_* Messages from the device.  An ERR_*
Message may cause the Root Port to generate an interrupt, depending on the
AER Root Error Command register managed by the AER service driver.
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Acked-by: default avatarSerge Semin <fancer.lancer@gmail.com>
Signed-off-by: default avatarJon Mason <jdmason@kudzu.us>
      cb2a6d17
    • Palmer Dabbelt's avatar
      MAINTAINERS: git://github -> https://github.com for jonmason · ce2188ac
      Palmer Dabbelt authored 
      Github deprecated the git:// links about a year ago, so let's move to
the https:// URLs instead.
Reported-by: default avatarConor Dooley <conor.dooley@microchip.com>
Link: https://github.blog/2021-09-01-improving-git-protocol-security-github/Signed-off-by: default avatarPalmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: default avatarJon Mason <jdmason@kudzu.us>
      ce2188ac
    • ruanjinjie's avatar
      NTB: EPF: fix possible memory leak in pci_vntb_probe() · 956578e3
      ruanjinjie authored 
      As ntb_register_device() don't handle error of device_register(),
if ntb_register_device() returns error in pci_vntb_probe(), name of kobject
which is allocated in dev_set_name() called in device_add() is leaked.

As comment of device_add() says, it should call put_device() to drop the
reference count that was set in device_initialize()
when it fails, so the name can be freed in kobject_cleanup().
Signed-off-by: default avatarruanjinjie <ruanjinjie@huawei.com>
Signed-off-by: default avatarJon Mason <jdmason@kudzu.us>
      956578e3
    • Jiasheng Jiang's avatar
      NTB: ntb_tool: Add check for devm_kcalloc · 2790143f
      Jiasheng Jiang authored 
      As the devm_kcalloc may return NULL pointer,
it should be better to add check for the return
value, as same as the others.

Fixes: 7f46c8b3 ("NTB: ntb_tool: Add full multi-port NTB API support")
Signed-off-by: default avatarJiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: default avatarSerge Semin <fancer.lancer@gmail.com>
Reviewed-by: default avatarDave Jiang <dave.jiang@intel.com>
Signed-off-by: default avatarJon Mason <jdmason@kudzu.us>
      2790143f
    • Yang Yingliang's avatar
      NTB: ntb_transport: fix possible memory leak while device_register() fails · 8623ccbf
      Yang Yingliang authored 
      If device_register() returns error, the name allocated by
dev_set_name() need be freed. As comment of device_register()
says, it should use put_device() to give up the reference in
the error path. So fix this by calling put_device(), then the
name can be freed in kobject_cleanup(), and client_dev is freed
in ntb_transport_client_release().

Fixes: fce8a7bb ("PCI-Express Non-Transparent Bridge Support")
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: default avatarDave Jiang <dave.jiang@intel.com>
Signed-off-by: default avatarJon Mason <jdmason@kudzu.us>
      8623ccbf
    • Yuan Can's avatar
      ntb: intel: Fix error handling in intel_ntb_pci_driver_init() · 4c3c796a
      Yuan Can authored 
      A problem about ntb_hw_intel create debugfs failed is triggered with the
following log given:

 [  273.112733] Intel(R) PCI-E Non-Transparent Bridge Driver 2.0
 [  273.115342] debugfs: Directory 'ntb_hw_intel' with parent '/' already present!

The reason is that intel_ntb_pci_driver_init() returns
pci_register_driver() directly without checking its return value, if
pci_register_driver() failed, it returns without destroy the newly created
debugfs, resulting the debugfs of ntb_hw_intel can never be created later.

 intel_ntb_pci_driver_init()
   debugfs_create_dir() # create debugfs directory
   pci_register_driver()
     driver_register()
       bus_add_driver()
         priv = kzalloc(...) # OOM happened
   # return without destroy debugfs directory

Fix by removing debugfs when pci_register_driver() returns error.

Fixes: e26a5843 ("NTB: Split ntb_hw_intel and ntb_transport drivers")
Signed-off-by: default avatarYuan Can <yuancan@huawei.com>
Acked-by: default avatarDave Jiang <dave.jiang@intel.com>
Signed-off-by: default avatarJon Mason <jdmason@kudzu.us>
      4c3c796a
    • Yuan Can's avatar
      NTB: amd: Fix error handling in amd_ntb_pci_driver_init() · 98af0a33
      Yuan Can authored 
      A problem about ntb_hw_amd create debugfs failed is triggered with the
following log given:

 [  618.431232] AMD(R) PCI-E Non-Transparent Bridge Driver 1.0
 [  618.433284] debugfs: Directory 'ntb_hw_amd' with parent '/' already present!

The reason is that amd_ntb_pci_driver_init() returns pci_register_driver()
directly without checking its return value, if pci_register_driver()
failed, it returns without destroy the newly created debugfs, resulting
the debugfs of ntb_hw_amd can never be created later.

 amd_ntb_pci_driver_init()
   debugfs_create_dir() # create debugfs directory
   pci_register_driver()
     driver_register()
       bus_add_driver()
         priv = kzalloc(...) # OOM happened
   # return without destroy debugfs directory

Fix by removing debugfs when pci_register_driver() returns error.

Fixes: a1b36958 ("NTB: Add support for AMD PCI-Express Non-Transparent Bridge")
Signed-off-by: default avatarYuan Can <yuancan@huawei.com>
Signed-off-by: default avatarJon Mason <jdmason@kudzu.us>
      98af0a33
    • Yuan Can's avatar
      ntb: idt: Fix error handling in idt_pci_driver_init() · c0129682
      Yuan Can authored 
      A problem about ntb_hw_idt create debugfs failed is triggered with the
following log given:

 [ 1236.637636] IDT PCI-E Non-Transparent Bridge Driver 2.0
 [ 1236.639292] debugfs: Directory 'ntb_hw_idt' with parent '/' already present!

The reason is that idt_pci_driver_init() returns pci_register_driver()
directly without checking its return value, if pci_register_driver()
failed, it returns without destroy the newly created debugfs, resulting
the debugfs of ntb_hw_idt can never be created later.

 idt_pci_driver_init()
   debugfs_create_dir() # create debugfs directory
   pci_register_driver()
     driver_register()
       bus_add_driver()
         priv = kzalloc(...) # OOM happened
   # return without destroy debugfs directory

Fix by removing debugfs when pci_register_driver() returns error.

Fixes: bf2a952d ("NTB: Add IDT 89HPESxNTx PCIe-switches support")
Signed-off-by: default avatarYuan Can <yuancan@huawei.com>
Signed-off-by: default avatarJon Mason <jdmason@kudzu.us>
      c0129682
  3. 25 Jun, 2023 5 commits
  5. 23 Jun, 2023 21 commits
  7. 22 Jun, 2023 4 commits
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