linux-stable.git/drivers/ntb/hw, branch linux-4.19.y Linux kernel stable tree ntb: intel: Fix the NULL vs IS_ERR() bug for debugfs_create_dir() 2024-11-08T15:19:07+00:00 Jinjie Ruan ruanjinjie@huawei.com 2023-08-31T12:39:27+00:00 20cbc281033ef5324f67f2d54bc539968f937255 [ Upstream commit e229897d373a87ee09ec5cc4ecd4bb2f895fc16b ] The debugfs_create_dir() function returns error pointers. It never returns NULL. So use IS_ERR() to check it. Fixes: e26a5843f7f5 ("NTB: Split ntb_hw_intel and ntb_transport drivers") Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit e229897d373a87ee09ec5cc4ecd4bb2f895fc16b ]

The debugfs_create_dir() function returns error pointers.
It never returns NULL. So use IS_ERR() to check it.

Fixes: e26a5843f7f5 ("NTB: Split ntb_hw_intel and ntb_transport drivers")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ntb: intel: Fix error handling in intel_ntb_pci_driver_init() 2023-08-11T09:45:18+00:00 Yuan Can yuancan@huawei.com 2022-11-05T09:43:22+00:00 7efa14059c32801af3790a2487489e9d255538f3 [ Upstream commit 4c3c796aca02883ad35bb117468938cc4022ca41 ] 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: e26a5843f7f5 ("NTB: Split ntb_hw_intel and ntb_transport drivers") Signed-off-by: Yuan Can <yuancan@huawei.com> Acked-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 4c3c796aca02883ad35bb117468938cc4022ca41 ]

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: e26a5843f7f5 ("NTB: Split ntb_hw_intel and ntb_transport drivers")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Sasha Levin <sashal@kernel.org>
NTB: amd: Fix error handling in amd_ntb_pci_driver_init() 2023-08-11T09:45:18+00:00 Yuan Can yuancan@huawei.com 2022-11-05T09:43:09+00:00 ef0827bc61481eae3efa7c129cb3568b70d43873 [ Upstream commit 98af0a33c1101c29b3ce4f0cf4715fd927c717f9 ] 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: a1b3695820aa ("NTB: Add support for AMD PCI-Express Non-Transparent Bridge") Signed-off-by: Yuan Can <yuancan@huawei.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 98af0a33c1101c29b3ce4f0cf4715fd927c717f9 ]

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: a1b3695820aa ("NTB: Add support for AMD PCI-Express Non-Transparent Bridge")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ntb: idt: Fix error handling in idt_pci_driver_init() 2023-08-11T09:45:18+00:00 Yuan Can yuancan@huawei.com 2022-11-05T09:43:01+00:00 a5b9817215c4333a4ee3b2dafeff03a5f8e1ddc4 [ Upstream commit c012968259b451dc4db407f2310fe131eaefd800 ] 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: bf2a952d31d2 ("NTB: Add IDT 89HPESxNTx PCIe-switches support") Signed-off-by: Yuan Can <yuancan@huawei.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit c012968259b451dc4db407f2310fe131eaefd800 ]

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: bf2a952d31d2 ("NTB: Add IDT 89HPESxNTx PCIe-switches support")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Sasha Levin <sashal@kernel.org>
NTB: hw: amd: fix an issue about leak system resources 2020-10-30T09:38:25+00:00 Kaige Li likaige@loongson.cn 2020-08-11T01:59:57+00:00 2d1fba2112ddb3fb8c906388167eb9b17fa0381c [ Upstream commit 44a0a3c17919db1498cebb02ecf3cf4abc1ade7b ] The related system resources were not released when pci_set_dma_mask(), pci_set_consistent_dma_mask(), or pci_iomap() return error in the amd_ntb_init_pci() function. Add pci_release_regions() to fix it. Fixes: a1b3695820aa ("NTB: Add support for AMD PCI-Express Non-Transparent Bridge") Signed-off-by: Kaige Li <likaige@loongson.cn> Signed-off-by: Jon Mason <jdmason@kudzu.us> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 44a0a3c17919db1498cebb02ecf3cf4abc1ade7b ]

The related system resources were not released when pci_set_dma_mask(),
pci_set_consistent_dma_mask(), or pci_iomap() return error in the
amd_ntb_init_pci() function. Add pci_release_regions() to fix it.

Fixes: a1b3695820aa ("NTB: Add support for AMD PCI-Express Non-Transparent Bridge")
Signed-off-by: Kaige Li <likaige@loongson.cn>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ntb_hw_switchtec: potential shift wrapping bug in switchtec_ntb_init_sndev() 2020-01-27T13:50:55+00:00 Dan Carpenter dan.carpenter@oracle.com 2019-03-25T09:17:26+00:00 eddad30e746165fa951e056bbc6b02cd9e50623e [ Upstream commit ff148d8ac53e59802645bd3200c811620317eb9f ] This code triggers a Smatch warning: drivers/ntb/hw/mscc/ntb_hw_switchtec.c:884 switchtec_ntb_init_sndev() warn: should '(1 << sndev->peer_partition)' be a 64 bit type? The "part_map" and "tpart_vec" variables are u64 type so this seems like a valid warning. Fixes: 3df54c870f52 ("ntb_hw_switchtec: Allow using Switchtec NTB in multi-partition setups") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit ff148d8ac53e59802645bd3200c811620317eb9f ]

This code triggers a Smatch warning:

    drivers/ntb/hw/mscc/ntb_hw_switchtec.c:884 switchtec_ntb_init_sndev()
    warn: should '(1 << sndev->peer_partition)' be a 64 bit type?

The "part_map" and "tpart_vec" variables are u64 type so this seems like
a valid warning.

Fixes: 3df54c870f52 ("ntb_hw_switchtec: Allow using Switchtec NTB in multi-partition setups")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ntb_hw_switchtec: debug print 64bit aligned crosslink BAR Numbers 2020-01-27T13:50:22+00:00 Paul Selles paul.selles@microchip.com 2018-12-06T13:30:50+00:00 10efc08b05e494aa1511210b25e355b2910daf95 [ Upstream commit cce8e04cf79e47809455215744685e8eb56f94bb ] Switchtec NTB crosslink BARs are 64bit addressed but they are printed as 32bit addressed BARs. Fix debug log to increment the BAR numbers by 2 to reflect the 64bit address alignment. Fixes: 017525018202 ("ntb_hw_switchtec: Add initialization code for crosslink") Signed-off-by: Paul Selles <paul.selles@microchip.com> Signed-off-by: Wesley Sheng <wesley.sheng@microchip.com> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit cce8e04cf79e47809455215744685e8eb56f94bb ]

Switchtec NTB crosslink BARs are 64bit addressed but they are printed as
32bit addressed BARs. Fix debug log to increment the BAR numbers by 2 to
reflect the 64bit address alignment.

Fixes: 017525018202 ("ntb_hw_switchtec: Add initialization code for crosslink")
Signed-off-by: Paul Selles <paul.selles@microchip.com>
Signed-off-by: Wesley Sheng <wesley.sheng@microchip.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Sasha Levin <sashal@kernel.org>
NTB: ntb_hw_idt: replace IS_ERR_OR_NULL with regular NULL checks 2020-01-27T13:50:01+00:00 Gustavo A. R. Silva gustavo@embeddedor.com 2018-08-27T22:13:06+00:00 9ee29cc7b98010a1b629a48e6f27aa038fe2c314 [ Upstream commit 1b7619828d0c341612f58683e73f279c37e70bbc ] Both devm_kcalloc() and devm_kzalloc() return NULL on error. They never return error pointers. The use of IS_ERR_OR_NULL is currently applied to the wrong context. Fix this by replacing IS_ERR_OR_NULL with regular NULL checks. Fixes: bf2a952d31d2 ("NTB: Add IDT 89HPESxNTx PCIe-switches support") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 1b7619828d0c341612f58683e73f279c37e70bbc ]

Both devm_kcalloc() and devm_kzalloc() return NULL on error. They
never return error pointers.

The use of IS_ERR_OR_NULL is currently applied to the wrong
context.

Fix this by replacing IS_ERR_OR_NULL with regular NULL checks.

Fixes: bf2a952d31d2 ("NTB: Add IDT 89HPESxNTx PCIe-switches support")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ntb: intel: fix return value for ndev_vec_mask() 2019-12-01T08:17:13+00:00 Dave Jiang dave.jiang@intel.com 2018-08-29T00:13:59+00:00 ad8298fccd706b6c5fd23c20c77a1d38ecb34609 [ Upstream commit 7756e2b5d68c36e170a111dceea22f7365f83256 ] ndev_vec_mask() should be returning u64 mask value instead of int. Otherwise the mask value returned can be incorrect for larger vectors. Fixes: e26a5843f7f5 ("NTB: Split ntb_hw_intel and ntb_transport drivers") Signed-off-by: Dave Jiang <dave.jiang@intel.com> Tested-by: Lucas Van <lucas.van@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 7756e2b5d68c36e170a111dceea22f7365f83256 ]

ndev_vec_mask() should be returning u64 mask value instead of int.
Otherwise the mask value returned can be incorrect for larger
vectors.

Fixes: e26a5843f7f5 ("NTB: Split ntb_hw_intel and ntb_transport drivers")

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Tested-by: Lucas Van <lucas.van@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Sasha Levin <sashal@kernel.org>
switchtec: Use generic PCI Vendor ID and Class Code 2018-06-30T01:16:44+00:00 Doug Meyer dmeyer@gigaio.com 2018-05-23T20:18:05+00:00 cfdfc14e7fb8ae77290e9d5afaeecc0a234a3846 Move the Microsemi Switchtec PCI Vendor ID (same as PCI_VENDOR_ID_PMC_Sierra) to pci_ids.h. Also, replace Microsemi class constants with the standard PCI definitions. Signed-off-by: Doug Meyer <dmeyer@gigaio.com> [bhelgaas: restore SPDX (I assume it was removed by mistake), remove device ID definitions] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> 
Move the Microsemi Switchtec PCI Vendor ID (same as
PCI_VENDOR_ID_PMC_Sierra) to pci_ids.h.   Also, replace Microsemi class
constants with the standard PCI definitions.

Signed-off-by: Doug Meyer <dmeyer@gigaio.com>
[bhelgaas: restore SPDX (I assume it was removed by mistake), remove
device ID definitions]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>